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|
|
<li class="md-nav__item">
|
|
<a href="../../examples/pagination-search/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Pagination & search
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
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|
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|
|
|
|
|
<li class="md-nav__item md-nav__item--active md-nav__item--section md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_3" checked>
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_3" id="__nav_3_label" tabindex="">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Module
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_3_label" aria-expanded="true">
|
|
<label class="md-nav__title" for="__nav_3">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
|
|
|
Module
|
|
|
|
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../cli/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
CLI
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
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|
|
|
|
|
|
|
|
|
|
|
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|
|
|
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|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--active">
|
|
|
|
<input class="md-nav__toggle md-toggle" type="checkbox" id="__toc">
|
|
|
|
|
|
|
|
|
|
|
|
<label class="md-nav__link md-nav__link--active" for="__toc">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
CRUD
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<a href="././" class="md-nav__link md-nav__link--active">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
CRUD
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
|
|
|
|
|
|
|
|
<nav class="md-nav md-nav--secondary" aria-label="On this page">
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<label class="md-nav__title" for="__toc">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
On this page
|
|
</label>
|
|
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#overview" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Overview
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#creating-a-crud-class" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Creating a CRUD class
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#basic-operations" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Basic operations
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#pagination" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Pagination
|
|
|
|
</span>
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Pagination">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#offset-pagination" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Offset pagination
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#cursor-pagination" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Cursor pagination
|
|
|
|
</span>
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Cursor pagination">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#choosing-a-cursor-column" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Choosing a cursor column
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#search" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Search
|
|
|
|
</span>
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Search">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#full-text-search" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Full-text search
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#faceted-search" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Faceted search
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#relationship-loading" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Relationship loading
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#many-to-many-relationships" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Many-to-many relationships
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#upsert" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Upsert
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#response-serialization" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Response serialization
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../db/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
DB
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../dependencies/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Dependencies
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../exceptions/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Exceptions
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../fixtures/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Fixtures
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../logger/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Logger
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../metrics/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Metrics
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../pytest/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Pytest
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../schemas/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Schemas
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4" >
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Reference
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_4_label" aria-expanded="false">
|
|
<label class="md-nav__title" for="__nav_4">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
|
|
|
Reference
|
|
|
|
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../reference/cli/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
cli
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../reference/crud/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
crud
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../reference/db/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
db
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../reference/dependencies/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
dependencies
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../reference/exceptions/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
exceptions
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../reference/fixtures/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
fixtures
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../reference/logger/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
logger
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../../reference/metrics/" class="md-nav__link">
|
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<svg xmlns="http://www.w3.org/2000/svg" fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2" class="lucide lucide-file-code-2" viewBox="0 0 24 24"><path d="M4 12.15V4a2 2 0 0 1 2-2h8a2.4 2.4 0 0 1 1.706.706l3.588 3.588A2.4 2.4 0 0 1 20 8v12a2 2 0 0 1-2 2h-3.35"/><path d="M14 2v5a1 1 0 0 0 1 1h5M5 16l-3 3 3 3M9 22l3-3-3-3"/></svg>
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<h1 id="crud">CRUD<a class="headerlink" href="#crud" title="Permanent link">¶</a></h1>
|
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<p>Generic async CRUD operations for SQLAlchemy models with search, pagination, and many-to-many support.</p>
|
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<div class="admonition info">
|
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<p class="admonition-title">Info</p>
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<p>This module has been coded and tested to be compatible with PostgreSQL only.</p>
|
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</div>
|
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<h2 id="overview">Overview<a class="headerlink" href="#overview" title="Permanent link">¶</a></h2>
|
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<p>The <code>crud</code> module provides <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud"><code>AsyncCrud</code></a>, an abstract base class with a full suite of async database operations, and <a href="../../reference/crud/#fastapi_toolsets.crud.factory.CrudFactory"><code>CrudFactory</code></a>, a convenience function to instantiate it for a given model.</p>
|
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<h2 id="creating-a-crud-class">Creating a CRUD class<a class="headerlink" href="#creating-a-crud-class" title="Permanent link">¶</a></h2>
|
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<div class="language-python highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">fastapi_toolsets.crud</span><span class="w"> </span><span class="kn">import</span> <span class="n">CrudFactory</span>
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</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a><span class="kn">from</span><span class="w"> </span><span class="nn">myapp.models</span><span class="w"> </span><span class="kn">import</span> <span class="n">User</span>
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</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a>
|
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</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="n">UserCrud</span> <span class="o">=</span> <span class="n">CrudFactory</span><span class="p">(</span><span class="n">model</span><span class="o">=</span><span class="n">User</span><span class="p">)</span>
|
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</span></code></pre></div>
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<p><a href="../../reference/crud/#fastapi_toolsets.crud.factory.CrudFactory"><code>CrudFactory</code></a> dynamically creates a class named <code>AsyncUserCrud</code> with <code>User</code> as its model.</p>
|
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<h2 id="basic-operations">Basic operations<a class="headerlink" href="#basic-operations" title="Permanent link">¶</a></h2>
|
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<div class="language-python highlight"><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a><span class="c1"># Create</span>
|
|
</span><span id="__span-1-2"><a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a><span class="n">user</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">create</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">obj</span><span class="o">=</span><span class="n">UserCreateSchema</span><span class="p">(</span><span class="n">username</span><span class="o">=</span><span class="s2">"alice"</span><span class="p">))</span>
|
|
</span><span id="__span-1-3"><a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a>
|
|
</span><span id="__span-1-4"><a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="c1"># Get one (raises NotFoundError if not found)</span>
|
|
</span><span id="__span-1-5"><a id="__codelineno-1-5" name="__codelineno-1-5" href="#__codelineno-1-5"></a><span class="n">user</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">user_id</span><span class="p">])</span>
|
|
</span><span id="__span-1-6"><a id="__codelineno-1-6" name="__codelineno-1-6" href="#__codelineno-1-6"></a>
|
|
</span><span id="__span-1-7"><a id="__codelineno-1-7" name="__codelineno-1-7" href="#__codelineno-1-7"></a><span class="c1"># Get first or None</span>
|
|
</span><span id="__span-1-8"><a id="__codelineno-1-8" name="__codelineno-1-8" href="#__codelineno-1-8"></a><span class="n">user</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">first</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">email</span> <span class="o">==</span> <span class="n">email</span><span class="p">])</span>
|
|
</span><span id="__span-1-9"><a id="__codelineno-1-9" name="__codelineno-1-9" href="#__codelineno-1-9"></a>
|
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</span><span id="__span-1-10"><a id="__codelineno-1-10" name="__codelineno-1-10" href="#__codelineno-1-10"></a><span class="c1"># Get multiple</span>
|
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</span><span id="__span-1-11"><a id="__codelineno-1-11" name="__codelineno-1-11" href="#__codelineno-1-11"></a><span class="n">users</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">get_multi</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">is_active</span> <span class="o">==</span> <span class="kc">True</span><span class="p">])</span>
|
|
</span><span id="__span-1-12"><a id="__codelineno-1-12" name="__codelineno-1-12" href="#__codelineno-1-12"></a>
|
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</span><span id="__span-1-13"><a id="__codelineno-1-13" name="__codelineno-1-13" href="#__codelineno-1-13"></a><span class="c1"># Update</span>
|
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</span><span id="__span-1-14"><a id="__codelineno-1-14" name="__codelineno-1-14" href="#__codelineno-1-14"></a><span class="n">user</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">obj</span><span class="o">=</span><span class="n">UserUpdateSchema</span><span class="p">(</span><span class="n">username</span><span class="o">=</span><span class="s2">"bob"</span><span class="p">),</span> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">user_id</span><span class="p">])</span>
|
|
</span><span id="__span-1-15"><a id="__codelineno-1-15" name="__codelineno-1-15" href="#__codelineno-1-15"></a>
|
|
</span><span id="__span-1-16"><a id="__codelineno-1-16" name="__codelineno-1-16" href="#__codelineno-1-16"></a><span class="c1"># Delete</span>
|
|
</span><span id="__span-1-17"><a id="__codelineno-1-17" name="__codelineno-1-17" href="#__codelineno-1-17"></a><span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">user_id</span><span class="p">])</span>
|
|
</span><span id="__span-1-18"><a id="__codelineno-1-18" name="__codelineno-1-18" href="#__codelineno-1-18"></a>
|
|
</span><span id="__span-1-19"><a id="__codelineno-1-19" name="__codelineno-1-19" href="#__codelineno-1-19"></a><span class="c1"># Count / exists</span>
|
|
</span><span id="__span-1-20"><a id="__codelineno-1-20" name="__codelineno-1-20" href="#__codelineno-1-20"></a><span class="n">count</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">count</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">is_active</span> <span class="o">==</span> <span class="kc">True</span><span class="p">])</span>
|
|
</span><span id="__span-1-21"><a id="__codelineno-1-21" name="__codelineno-1-21" href="#__codelineno-1-21"></a><span class="n">exists</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">email</span> <span class="o">==</span> <span class="n">email</span><span class="p">])</span>
|
|
</span></code></pre></div>
|
|
<h2 id="pagination">Pagination<a class="headerlink" href="#pagination" title="Permanent link">¶</a></h2>
|
|
<div class="admonition info">
|
|
<p class="admonition-title">Added in <code>v1.1</code> (only offset_pagination via <code>paginate</code> if <code><v1.1</code>)</p>
|
|
</div>
|
|
<p>Two pagination strategies are available. Both return a <a href="../../reference/schemas/#fastapi_toolsets.schemas.PaginatedResponse"><code>PaginatedResponse</code></a> but differ in how they navigate through results.</p>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th></th>
|
|
<th><code>offset_paginate</code></th>
|
|
<th><code>cursor_paginate</code></th>
|
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</tr>
|
|
</thead>
|
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<tbody>
|
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<tr>
|
|
<td>Total count</td>
|
|
<td>Yes</td>
|
|
<td>No</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Jump to arbitrary page</td>
|
|
<td>Yes</td>
|
|
<td>No</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Performance on deep pages</td>
|
|
<td>Degrades</td>
|
|
<td>Constant</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Stable under concurrent inserts</td>
|
|
<td>No</td>
|
|
<td>Yes</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Search compatible</td>
|
|
<td>Yes</td>
|
|
<td>Yes</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Use case</td>
|
|
<td>Admin panels, numbered pagination</td>
|
|
<td>Feeds, APIs, infinite scroll</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h3 id="offset-pagination">Offset pagination<a class="headerlink" href="#offset-pagination" title="Permanent link">¶</a></h3>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="nd">@router</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
|
|
</span><span id="__span-2-2"><a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a> <span class="s2">""</span><span class="p">,</span>
|
|
</span><span id="__span-2-3"><a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a> <span class="n">response_model</span><span class="o">=</span><span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">User</span><span class="p">],</span>
|
|
</span><span id="__span-2-4"><a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="p">)</span>
|
|
</span><span id="__span-2-5"><a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_users</span><span class="p">(</span>
|
|
</span><span id="__span-2-6"><a id="__codelineno-2-6" name="__codelineno-2-6" href="#__codelineno-2-6"></a> <span class="n">session</span><span class="p">:</span> <span class="n">SessionDep</span><span class="p">,</span>
|
|
</span><span id="__span-2-7"><a id="__codelineno-2-7" name="__codelineno-2-7" href="#__codelineno-2-7"></a> <span class="n">items_per_page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">50</span><span class="p">,</span>
|
|
</span><span id="__span-2-8"><a id="__codelineno-2-8" name="__codelineno-2-8" href="#__codelineno-2-8"></a> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
|
|
</span><span id="__span-2-9"><a id="__codelineno-2-9" name="__codelineno-2-9" href="#__codelineno-2-9"></a><span class="p">):</span>
|
|
</span><span id="__span-2-10"><a id="__codelineno-2-10" name="__codelineno-2-10" href="#__codelineno-2-10"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">crud</span><span class="o">.</span><span class="n">UserCrud</span><span class="o">.</span><span class="n">offset_paginate</span><span class="p">(</span>
|
|
</span><span id="__span-2-11"><a id="__codelineno-2-11" name="__codelineno-2-11" href="#__codelineno-2-11"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-2-12"><a id="__codelineno-2-12" name="__codelineno-2-12" href="#__codelineno-2-12"></a> <span class="n">items_per_page</span><span class="o">=</span><span class="n">items_per_page</span><span class="p">,</span>
|
|
</span><span id="__span-2-13"><a id="__codelineno-2-13" name="__codelineno-2-13" href="#__codelineno-2-13"></a> <span class="n">page</span><span class="o">=</span><span class="n">page</span><span class="p">,</span>
|
|
</span><span id="__span-2-14"><a id="__codelineno-2-14" name="__codelineno-2-14" href="#__codelineno-2-14"></a> <span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<p>The <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud.offset_paginate"><code>offset_paginate</code></a> method returns a <a href="../../reference/schemas/#fastapi_toolsets.schemas.PaginatedResponse"><code>PaginatedResponse</code></a> whose <code>pagination</code> field is an <a href="../../reference/schemas/#fastapi_toolsets.schemas.OffsetPagination"><code>OffsetPagination</code></a> object:</p>
|
|
<div class="language-json highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="p">{</span>
|
|
</span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"SUCCESS"</span><span class="p">,</span>
|
|
</span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="w"> </span><span class="nt">"data"</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">"..."</span><span class="p">],</span>
|
|
</span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="w"> </span><span class="nt">"pagination"</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
|
|
</span><span id="__span-3-5"><a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="w"> </span><span class="nt">"total_count"</span><span class="p">:</span><span class="w"> </span><span class="mi">100</span><span class="p">,</span>
|
|
</span><span id="__span-3-6"><a id="__codelineno-3-6" name="__codelineno-3-6" href="#__codelineno-3-6"></a><span class="w"> </span><span class="nt">"page"</span><span class="p">:</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span>
|
|
</span><span id="__span-3-7"><a id="__codelineno-3-7" name="__codelineno-3-7" href="#__codelineno-3-7"></a><span class="w"> </span><span class="nt">"items_per_page"</span><span class="p">:</span><span class="w"> </span><span class="mi">20</span><span class="p">,</span>
|
|
</span><span id="__span-3-8"><a id="__codelineno-3-8" name="__codelineno-3-8" href="#__codelineno-3-8"></a><span class="w"> </span><span class="nt">"has_more"</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span>
|
|
</span><span id="__span-3-9"><a id="__codelineno-3-9" name="__codelineno-3-9" href="#__codelineno-3-9"></a><span class="w"> </span><span class="p">}</span>
|
|
</span><span id="__span-3-10"><a id="__codelineno-3-10" name="__codelineno-3-10" href="#__codelineno-3-10"></a><span class="p">}</span>
|
|
</span></code></pre></div>
|
|
<div class="admonition warning">
|
|
<p class="admonition-title">Deprecated: <code>paginate</code></p>
|
|
<p>The <code>paginate</code> function is a backward-compatible alias for <code>offset_paginate</code>. This function is <strong>deprecated</strong> and will be removed in <strong>v2.0</strong>.</p>
|
|
</div>
|
|
<h3 id="cursor-pagination">Cursor pagination<a class="headerlink" href="#cursor-pagination" title="Permanent link">¶</a></h3>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-4-1"><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a><span class="nd">@router</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
|
|
</span><span id="__span-4-2"><a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a> <span class="s2">""</span><span class="p">,</span>
|
|
</span><span id="__span-4-3"><a id="__codelineno-4-3" name="__codelineno-4-3" href="#__codelineno-4-3"></a> <span class="n">response_model</span><span class="o">=</span><span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">UserRead</span><span class="p">],</span>
|
|
</span><span id="__span-4-4"><a id="__codelineno-4-4" name="__codelineno-4-4" href="#__codelineno-4-4"></a><span class="p">)</span>
|
|
</span><span id="__span-4-5"><a id="__codelineno-4-5" name="__codelineno-4-5" href="#__codelineno-4-5"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">list_users</span><span class="p">(</span>
|
|
</span><span id="__span-4-6"><a id="__codelineno-4-6" name="__codelineno-4-6" href="#__codelineno-4-6"></a> <span class="n">session</span><span class="p">:</span> <span class="n">SessionDep</span><span class="p">,</span>
|
|
</span><span id="__span-4-7"><a id="__codelineno-4-7" name="__codelineno-4-7" href="#__codelineno-4-7"></a> <span class="n">cursor</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
|
</span><span id="__span-4-8"><a id="__codelineno-4-8" name="__codelineno-4-8" href="#__codelineno-4-8"></a> <span class="n">items_per_page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">20</span><span class="p">,</span>
|
|
</span><span id="__span-4-9"><a id="__codelineno-4-9" name="__codelineno-4-9" href="#__codelineno-4-9"></a><span class="p">):</span>
|
|
</span><span id="__span-4-10"><a id="__codelineno-4-10" name="__codelineno-4-10" href="#__codelineno-4-10"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">cursor_paginate</span><span class="p">(</span>
|
|
</span><span id="__span-4-11"><a id="__codelineno-4-11" name="__codelineno-4-11" href="#__codelineno-4-11"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-4-12"><a id="__codelineno-4-12" name="__codelineno-4-12" href="#__codelineno-4-12"></a> <span class="n">cursor</span><span class="o">=</span><span class="n">cursor</span><span class="p">,</span>
|
|
</span><span id="__span-4-13"><a id="__codelineno-4-13" name="__codelineno-4-13" href="#__codelineno-4-13"></a> <span class="n">items_per_page</span><span class="o">=</span><span class="n">items_per_page</span><span class="p">,</span>
|
|
</span><span id="__span-4-14"><a id="__codelineno-4-14" name="__codelineno-4-14" href="#__codelineno-4-14"></a> <span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<p>The <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud.cursor_paginate"><code>cursor_paginate</code></a> method returns a <a href="../../reference/schemas/#fastapi_toolsets.schemas.PaginatedResponse"><code>PaginatedResponse</code></a> whose <code>pagination</code> field is a <a href="../../reference/schemas/#fastapi_toolsets.schemas.CursorPagination"><code>CursorPagination</code></a> object:</p>
|
|
<div class="language-json highlight"><pre><span></span><code><span id="__span-5-1"><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="p">{</span>
|
|
</span><span id="__span-5-2"><a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"SUCCESS"</span><span class="p">,</span>
|
|
</span><span id="__span-5-3"><a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a><span class="w"> </span><span class="nt">"data"</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">"..."</span><span class="p">],</span>
|
|
</span><span id="__span-5-4"><a id="__codelineno-5-4" name="__codelineno-5-4" href="#__codelineno-5-4"></a><span class="w"> </span><span class="nt">"pagination"</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
|
|
</span><span id="__span-5-5"><a id="__codelineno-5-5" name="__codelineno-5-5" href="#__codelineno-5-5"></a><span class="w"> </span><span class="nt">"next_cursor"</span><span class="p">:</span><span class="w"> </span><span class="s2">"eyJ2YWx1ZSI6ICIzZjQ3YWM2OS0uLi4ifQ=="</span><span class="p">,</span>
|
|
</span><span id="__span-5-6"><a id="__codelineno-5-6" name="__codelineno-5-6" href="#__codelineno-5-6"></a><span class="w"> </span><span class="nt">"prev_cursor"</span><span class="p">:</span><span class="w"> </span><span class="kc">null</span><span class="p">,</span>
|
|
</span><span id="__span-5-7"><a id="__codelineno-5-7" name="__codelineno-5-7" href="#__codelineno-5-7"></a><span class="w"> </span><span class="nt">"items_per_page"</span><span class="p">:</span><span class="w"> </span><span class="mi">20</span><span class="p">,</span>
|
|
</span><span id="__span-5-8"><a id="__codelineno-5-8" name="__codelineno-5-8" href="#__codelineno-5-8"></a><span class="w"> </span><span class="nt">"has_more"</span><span class="p">:</span><span class="w"> </span><span class="kc">true</span>
|
|
</span><span id="__span-5-9"><a id="__codelineno-5-9" name="__codelineno-5-9" href="#__codelineno-5-9"></a><span class="w"> </span><span class="p">}</span>
|
|
</span><span id="__span-5-10"><a id="__codelineno-5-10" name="__codelineno-5-10" href="#__codelineno-5-10"></a><span class="p">}</span>
|
|
</span></code></pre></div>
|
|
<p>Pass <code>next_cursor</code> as the <code>cursor</code> query parameter on the next request to advance to the next page. <code>prev_cursor</code> is set on pages 2+ and points back to the first item of the current page. Both are <code>null</code> when there is no adjacent page.</p>
|
|
<h4 id="choosing-a-cursor-column">Choosing a cursor column<a class="headerlink" href="#choosing-a-cursor-column" title="Permanent link">¶</a></h4>
|
|
<p>The cursor column is set once on <a href="../../reference/crud/#fastapi_toolsets.crud.factory.CrudFactory"><code>CrudFactory</code></a> via the <code>cursor_column</code> parameter. It must be monotonically ordered for stable results:</p>
|
|
<ul>
|
|
<li>Auto-increment integer PKs</li>
|
|
<li>UUID v7 PKs</li>
|
|
<li>Timestamps</li>
|
|
</ul>
|
|
<div class="admonition warning">
|
|
<p class="admonition-title">Warning</p>
|
|
<p>Random UUID v4 PKs are <strong>not</strong> suitable as cursor columns because their ordering is non-deterministic.</p>
|
|
</div>
|
|
<div class="admonition note">
|
|
<p class="admonition-title">Note</p>
|
|
<p><code>cursor_column</code> is required. Calling <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud.cursor_paginate"><code>cursor_paginate</code></a> on a CRUD class that has no <code>cursor_column</code> configured raises a <code>ValueError</code>.</p>
|
|
</div>
|
|
<p>The cursor value is base64-encoded when returned to the client and decoded back to the correct Python type on the next request. The following SQLAlchemy column types are supported:</p>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>SQLAlchemy type</th>
|
|
<th>Python type</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><code>Integer</code>, <code>BigInteger</code>, <code>SmallInteger</code></td>
|
|
<td><code>int</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>Uuid</code></td>
|
|
<td><code>uuid.UUID</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>DateTime</code></td>
|
|
<td><code>datetime.datetime</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>Date</code></td>
|
|
<td><code>datetime.date</code></td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>Float</code>, <code>Numeric</code></td>
|
|
<td><code>decimal.Decimal</code></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="c1"># Paginate by the primary key</span>
|
|
</span><span id="__span-6-2"><a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="n">PostCrud</span> <span class="o">=</span> <span class="n">CrudFactory</span><span class="p">(</span><span class="n">model</span><span class="o">=</span><span class="n">Post</span><span class="p">,</span> <span class="n">cursor_column</span><span class="o">=</span><span class="n">Post</span><span class="o">.</span><span class="n">id</span><span class="p">)</span>
|
|
</span><span id="__span-6-3"><a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a>
|
|
</span><span id="__span-6-4"><a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a><span class="c1"># Paginate by a timestamp column instead</span>
|
|
</span><span id="__span-6-5"><a id="__codelineno-6-5" name="__codelineno-6-5" href="#__codelineno-6-5"></a><span class="n">PostCrud</span> <span class="o">=</span> <span class="n">CrudFactory</span><span class="p">(</span><span class="n">model</span><span class="o">=</span><span class="n">Post</span><span class="p">,</span> <span class="n">cursor_column</span><span class="o">=</span><span class="n">Post</span><span class="o">.</span><span class="n">created_at</span><span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<h2 id="search">Search<a class="headerlink" href="#search" title="Permanent link">¶</a></h2>
|
|
<p>Two search strategies are available, both compatible with <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud.offset_paginate"><code>offset_paginate</code></a> and <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud.cursor_paginate"><code>cursor_paginate</code></a>.</p>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th></th>
|
|
<th>Full-text search</th>
|
|
<th>Faceted search</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>Input</td>
|
|
<td>Free-text string</td>
|
|
<td>Exact column values</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Relationship support</td>
|
|
<td>Yes</td>
|
|
<td>Yes</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Use case</td>
|
|
<td>Search bars</td>
|
|
<td>Filter dropdowns</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<div class="admonition info">
|
|
<p class="admonition-title">You can use both search strategies in the same endpoint!</p>
|
|
</div>
|
|
<h3 id="full-text-search">Full-text search<a class="headerlink" href="#full-text-search" title="Permanent link">¶</a></h3>
|
|
<p>Declare <code>searchable_fields</code> on the CRUD class. Relationship traversal is supported via tuples:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-7-1"><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a><span class="n">PostCrud</span> <span class="o">=</span> <span class="n">CrudFactory</span><span class="p">(</span>
|
|
</span><span id="__span-7-2"><a id="__codelineno-7-2" name="__codelineno-7-2" href="#__codelineno-7-2"></a> <span class="n">model</span><span class="o">=</span><span class="n">Post</span><span class="p">,</span>
|
|
</span><span id="__span-7-3"><a id="__codelineno-7-3" name="__codelineno-7-3" href="#__codelineno-7-3"></a> <span class="n">searchable_fields</span><span class="o">=</span><span class="p">[</span>
|
|
</span><span id="__span-7-4"><a id="__codelineno-7-4" name="__codelineno-7-4" href="#__codelineno-7-4"></a> <span class="n">Post</span><span class="o">.</span><span class="n">title</span><span class="p">,</span>
|
|
</span><span id="__span-7-5"><a id="__codelineno-7-5" name="__codelineno-7-5" href="#__codelineno-7-5"></a> <span class="n">Post</span><span class="o">.</span><span class="n">content</span><span class="p">,</span>
|
|
</span><span id="__span-7-6"><a id="__codelineno-7-6" name="__codelineno-7-6" href="#__codelineno-7-6"></a> <span class="p">(</span><span class="n">Post</span><span class="o">.</span><span class="n">author</span><span class="p">,</span> <span class="n">User</span><span class="o">.</span><span class="n">username</span><span class="p">),</span> <span class="c1"># search across relationship</span>
|
|
</span><span id="__span-7-7"><a id="__codelineno-7-7" name="__codelineno-7-7" href="#__codelineno-7-7"></a> <span class="p">],</span>
|
|
</span><span id="__span-7-8"><a id="__codelineno-7-8" name="__codelineno-7-8" href="#__codelineno-7-8"></a><span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<p>You can override <code>searchable_fields</code> per call with <code>search_fields</code>:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-8-1"><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a><span class="n">result</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">offset_paginate</span><span class="p">(</span>
|
|
</span><span id="__span-8-2"><a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-8-3"><a id="__codelineno-8-3" name="__codelineno-8-3" href="#__codelineno-8-3"></a> <span class="n">search_fields</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">country</span><span class="p">],</span>
|
|
</span><span id="__span-8-4"><a id="__codelineno-8-4" name="__codelineno-8-4" href="#__codelineno-8-4"></a><span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<p>This allows searching with both <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud.offset_paginate"><code>offset_paginate</code></a> and <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud.cursor_paginate"><code>cursor_paginate</code></a>:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-9-1"><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a><span class="nd">@router</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
|
|
</span><span id="__span-9-2"><a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a> <span class="s2">""</span><span class="p">,</span>
|
|
</span><span id="__span-9-3"><a id="__codelineno-9-3" name="__codelineno-9-3" href="#__codelineno-9-3"></a> <span class="n">response_model</span><span class="o">=</span><span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">User</span><span class="p">],</span>
|
|
</span><span id="__span-9-4"><a id="__codelineno-9-4" name="__codelineno-9-4" href="#__codelineno-9-4"></a><span class="p">)</span>
|
|
</span><span id="__span-9-5"><a id="__codelineno-9-5" name="__codelineno-9-5" href="#__codelineno-9-5"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_users</span><span class="p">(</span>
|
|
</span><span id="__span-9-6"><a id="__codelineno-9-6" name="__codelineno-9-6" href="#__codelineno-9-6"></a> <span class="n">session</span><span class="p">:</span> <span class="n">SessionDep</span><span class="p">,</span>
|
|
</span><span id="__span-9-7"><a id="__codelineno-9-7" name="__codelineno-9-7" href="#__codelineno-9-7"></a> <span class="n">items_per_page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">50</span><span class="p">,</span>
|
|
</span><span id="__span-9-8"><a id="__codelineno-9-8" name="__codelineno-9-8" href="#__codelineno-9-8"></a> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
|
|
</span><span id="__span-9-9"><a id="__codelineno-9-9" name="__codelineno-9-9" href="#__codelineno-9-9"></a> <span class="n">search</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
|
</span><span id="__span-9-10"><a id="__codelineno-9-10" name="__codelineno-9-10" href="#__codelineno-9-10"></a><span class="p">):</span>
|
|
</span><span id="__span-9-11"><a id="__codelineno-9-11" name="__codelineno-9-11" href="#__codelineno-9-11"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">crud</span><span class="o">.</span><span class="n">UserCrud</span><span class="o">.</span><span class="n">offset_paginate</span><span class="p">(</span>
|
|
</span><span id="__span-9-12"><a id="__codelineno-9-12" name="__codelineno-9-12" href="#__codelineno-9-12"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-9-13"><a id="__codelineno-9-13" name="__codelineno-9-13" href="#__codelineno-9-13"></a> <span class="n">items_per_page</span><span class="o">=</span><span class="n">items_per_page</span><span class="p">,</span>
|
|
</span><span id="__span-9-14"><a id="__codelineno-9-14" name="__codelineno-9-14" href="#__codelineno-9-14"></a> <span class="n">page</span><span class="o">=</span><span class="n">page</span><span class="p">,</span>
|
|
</span><span id="__span-9-15"><a id="__codelineno-9-15" name="__codelineno-9-15" href="#__codelineno-9-15"></a> <span class="n">search</span><span class="o">=</span><span class="n">search</span><span class="p">,</span>
|
|
</span><span id="__span-9-16"><a id="__codelineno-9-16" name="__codelineno-9-16" href="#__codelineno-9-16"></a> <span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-10-1"><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a><span class="nd">@router</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
|
|
</span><span id="__span-10-2"><a id="__codelineno-10-2" name="__codelineno-10-2" href="#__codelineno-10-2"></a> <span class="s2">""</span><span class="p">,</span>
|
|
</span><span id="__span-10-3"><a id="__codelineno-10-3" name="__codelineno-10-3" href="#__codelineno-10-3"></a> <span class="n">response_model</span><span class="o">=</span><span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">User</span><span class="p">],</span>
|
|
</span><span id="__span-10-4"><a id="__codelineno-10-4" name="__codelineno-10-4" href="#__codelineno-10-4"></a><span class="p">)</span>
|
|
</span><span id="__span-10-5"><a id="__codelineno-10-5" name="__codelineno-10-5" href="#__codelineno-10-5"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_users</span><span class="p">(</span>
|
|
</span><span id="__span-10-6"><a id="__codelineno-10-6" name="__codelineno-10-6" href="#__codelineno-10-6"></a> <span class="n">session</span><span class="p">:</span> <span class="n">SessionDep</span><span class="p">,</span>
|
|
</span><span id="__span-10-7"><a id="__codelineno-10-7" name="__codelineno-10-7" href="#__codelineno-10-7"></a> <span class="n">cursor</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
|
</span><span id="__span-10-8"><a id="__codelineno-10-8" name="__codelineno-10-8" href="#__codelineno-10-8"></a> <span class="n">items_per_page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">50</span><span class="p">,</span>
|
|
</span><span id="__span-10-9"><a id="__codelineno-10-9" name="__codelineno-10-9" href="#__codelineno-10-9"></a> <span class="n">search</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span>
|
|
</span><span id="__span-10-10"><a id="__codelineno-10-10" name="__codelineno-10-10" href="#__codelineno-10-10"></a><span class="p">):</span>
|
|
</span><span id="__span-10-11"><a id="__codelineno-10-11" name="__codelineno-10-11" href="#__codelineno-10-11"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">crud</span><span class="o">.</span><span class="n">UserCrud</span><span class="o">.</span><span class="n">cursor_paginate</span><span class="p">(</span>
|
|
</span><span id="__span-10-12"><a id="__codelineno-10-12" name="__codelineno-10-12" href="#__codelineno-10-12"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-10-13"><a id="__codelineno-10-13" name="__codelineno-10-13" href="#__codelineno-10-13"></a> <span class="n">items_per_page</span><span class="o">=</span><span class="n">items_per_page</span><span class="p">,</span>
|
|
</span><span id="__span-10-14"><a id="__codelineno-10-14" name="__codelineno-10-14" href="#__codelineno-10-14"></a> <span class="n">cursor</span><span class="o">=</span><span class="n">cursor</span><span class="p">,</span>
|
|
</span><span id="__span-10-15"><a id="__codelineno-10-15" name="__codelineno-10-15" href="#__codelineno-10-15"></a> <span class="n">search</span><span class="o">=</span><span class="n">search</span><span class="p">,</span>
|
|
</span><span id="__span-10-16"><a id="__codelineno-10-16" name="__codelineno-10-16" href="#__codelineno-10-16"></a> <span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<h3 id="faceted-search">Faceted search<a class="headerlink" href="#faceted-search" title="Permanent link">¶</a></h3>
|
|
<div class="admonition info">
|
|
<p class="admonition-title">Added in <code>v1.2</code></p>
|
|
</div>
|
|
<p>Declare <code>facet_fields</code> on the CRUD class to return distinct column values alongside paginated results. This is useful for populating filter dropdowns or building faceted search UIs.</p>
|
|
<p>Facet fields use the same syntax as <code>searchable_fields</code> — direct columns or relationship tuples:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-11-1"><a id="__codelineno-11-1" name="__codelineno-11-1" href="#__codelineno-11-1"></a><span class="n">UserCrud</span> <span class="o">=</span> <span class="n">CrudFactory</span><span class="p">(</span>
|
|
</span><span id="__span-11-2"><a id="__codelineno-11-2" name="__codelineno-11-2" href="#__codelineno-11-2"></a> <span class="n">model</span><span class="o">=</span><span class="n">User</span><span class="p">,</span>
|
|
</span><span id="__span-11-3"><a id="__codelineno-11-3" name="__codelineno-11-3" href="#__codelineno-11-3"></a> <span class="n">facet_fields</span><span class="o">=</span><span class="p">[</span>
|
|
</span><span id="__span-11-4"><a id="__codelineno-11-4" name="__codelineno-11-4" href="#__codelineno-11-4"></a> <span class="n">User</span><span class="o">.</span><span class="n">status</span><span class="p">,</span>
|
|
</span><span id="__span-11-5"><a id="__codelineno-11-5" name="__codelineno-11-5" href="#__codelineno-11-5"></a> <span class="n">User</span><span class="o">.</span><span class="n">country</span><span class="p">,</span>
|
|
</span><span id="__span-11-6"><a id="__codelineno-11-6" name="__codelineno-11-6" href="#__codelineno-11-6"></a> <span class="p">(</span><span class="n">User</span><span class="o">.</span><span class="n">role</span><span class="p">,</span> <span class="n">Role</span><span class="o">.</span><span class="n">name</span><span class="p">),</span> <span class="c1"># value from a related model</span>
|
|
</span><span id="__span-11-7"><a id="__codelineno-11-7" name="__codelineno-11-7" href="#__codelineno-11-7"></a> <span class="p">],</span>
|
|
</span><span id="__span-11-8"><a id="__codelineno-11-8" name="__codelineno-11-8" href="#__codelineno-11-8"></a><span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<p>You can override <code>facet_fields</code> per call:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-12-1"><a id="__codelineno-12-1" name="__codelineno-12-1" href="#__codelineno-12-1"></a><span class="n">result</span> <span class="o">=</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">offset_paginate</span><span class="p">(</span>
|
|
</span><span id="__span-12-2"><a id="__codelineno-12-2" name="__codelineno-12-2" href="#__codelineno-12-2"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-12-3"><a id="__codelineno-12-3" name="__codelineno-12-3" href="#__codelineno-12-3"></a> <span class="n">facet_fields</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">country</span><span class="p">],</span>
|
|
</span><span id="__span-12-4"><a id="__codelineno-12-4" name="__codelineno-12-4" href="#__codelineno-12-4"></a><span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<p>The distinct values are returned in the <code>filter_attributes</code> field of <a href="../../reference/schemas/#fastapi_toolsets.schemas.PaginatedResponse"><code>PaginatedResponse</code></a>:</p>
|
|
<div class="language-json highlight"><pre><span></span><code><span id="__span-13-1"><a id="__codelineno-13-1" name="__codelineno-13-1" href="#__codelineno-13-1"></a><span class="p">{</span>
|
|
</span><span id="__span-13-2"><a id="__codelineno-13-2" name="__codelineno-13-2" href="#__codelineno-13-2"></a><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="s2">"SUCCESS"</span><span class="p">,</span>
|
|
</span><span id="__span-13-3"><a id="__codelineno-13-3" name="__codelineno-13-3" href="#__codelineno-13-3"></a><span class="w"> </span><span class="nt">"data"</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">"..."</span><span class="p">],</span>
|
|
</span><span id="__span-13-4"><a id="__codelineno-13-4" name="__codelineno-13-4" href="#__codelineno-13-4"></a><span class="w"> </span><span class="nt">"pagination"</span><span class="p">:</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="s2">"..."</span><span class="w"> </span><span class="p">},</span>
|
|
</span><span id="__span-13-5"><a id="__codelineno-13-5" name="__codelineno-13-5" href="#__codelineno-13-5"></a><span class="w"> </span><span class="nt">"filter_attributes"</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
|
|
</span><span id="__span-13-6"><a id="__codelineno-13-6" name="__codelineno-13-6" href="#__codelineno-13-6"></a><span class="w"> </span><span class="nt">"status"</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">"active"</span><span class="p">,</span><span class="w"> </span><span class="s2">"inactive"</span><span class="p">],</span>
|
|
</span><span id="__span-13-7"><a id="__codelineno-13-7" name="__codelineno-13-7" href="#__codelineno-13-7"></a><span class="w"> </span><span class="nt">"country"</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">"DE"</span><span class="p">,</span><span class="w"> </span><span class="s2">"FR"</span><span class="p">,</span><span class="w"> </span><span class="s2">"US"</span><span class="p">],</span>
|
|
</span><span id="__span-13-8"><a id="__codelineno-13-8" name="__codelineno-13-8" href="#__codelineno-13-8"></a><span class="w"> </span><span class="nt">"name"</span><span class="p">:</span><span class="w"> </span><span class="p">[</span><span class="s2">"admin"</span><span class="p">,</span><span class="w"> </span><span class="s2">"editor"</span><span class="p">,</span><span class="w"> </span><span class="s2">"viewer"</span><span class="p">]</span>
|
|
</span><span id="__span-13-9"><a id="__codelineno-13-9" name="__codelineno-13-9" href="#__codelineno-13-9"></a><span class="w"> </span><span class="p">}</span>
|
|
</span><span id="__span-13-10"><a id="__codelineno-13-10" name="__codelineno-13-10" href="#__codelineno-13-10"></a><span class="p">}</span>
|
|
</span></code></pre></div>
|
|
<p>Use <code>filter_by</code> to pass the client's chosen filter values directly — no need to build SQLAlchemy conditions by hand. Any unknown key raises <a href="../../reference/exceptions/#fastapi_toolsets.exceptions.exceptions.InvalidFacetFilterError"><code>InvalidFacetFilterError</code></a>.</p>
|
|
<div class="admonition info">
|
|
<p class="admonition-title">The keys in <code>filter_by</code> are the same keys the client received in <code>filter_attributes</code>.</p>
|
|
<p>Keys are normally the terminal <code>column.key</code> (e.g. <code>"name"</code> for <code>Role.name</code>). When two facet fields share the same column key (e.g. <code>(Build.project, Project.name)</code> and <code>(Build.os, Os.name)</code>), the relationship name is prepended automatically: <code>"project__name"</code> and <code>"os__name"</code>.</p>
|
|
</div>
|
|
<p><code>filter_by</code> and <code>filters</code> can be combined — both are applied with AND logic.</p>
|
|
<p>Use <a href="../../reference/crud/#fastapi_toolsets.crud.factory.AsyncCrud.filter_params"><code>filter_params()</code></a> to generate a dict with the facet filter values from the query parameters:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-14-1"><a id="__codelineno-14-1" name="__codelineno-14-1" href="#__codelineno-14-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">fastapi</span><span class="w"> </span><span class="kn">import</span> <span class="n">Depends</span>
|
|
</span><span id="__span-14-2"><a id="__codelineno-14-2" name="__codelineno-14-2" href="#__codelineno-14-2"></a>
|
|
</span><span id="__span-14-3"><a id="__codelineno-14-3" name="__codelineno-14-3" href="#__codelineno-14-3"></a><span class="n">UserCrud</span> <span class="o">=</span> <span class="n">CrudFactory</span><span class="p">(</span>
|
|
</span><span id="__span-14-4"><a id="__codelineno-14-4" name="__codelineno-14-4" href="#__codelineno-14-4"></a> <span class="n">model</span><span class="o">=</span><span class="n">User</span><span class="p">,</span>
|
|
</span><span id="__span-14-5"><a id="__codelineno-14-5" name="__codelineno-14-5" href="#__codelineno-14-5"></a> <span class="n">facet_fields</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">status</span><span class="p">,</span> <span class="n">User</span><span class="o">.</span><span class="n">country</span><span class="p">,</span> <span class="p">(</span><span class="n">User</span><span class="o">.</span><span class="n">role</span><span class="p">,</span> <span class="n">Role</span><span class="o">.</span><span class="n">name</span><span class="p">)],</span>
|
|
</span><span id="__span-14-6"><a id="__codelineno-14-6" name="__codelineno-14-6" href="#__codelineno-14-6"></a><span class="p">)</span>
|
|
</span><span id="__span-14-7"><a id="__codelineno-14-7" name="__codelineno-14-7" href="#__codelineno-14-7"></a>
|
|
</span><span id="__span-14-8"><a id="__codelineno-14-8" name="__codelineno-14-8" href="#__codelineno-14-8"></a><span class="nd">@router</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">""</span><span class="p">,</span> <span class="n">response_model_exclude_none</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
|
|
</span><span id="__span-14-9"><a id="__codelineno-14-9" name="__codelineno-14-9" href="#__codelineno-14-9"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">list_users</span><span class="p">(</span>
|
|
</span><span id="__span-14-10"><a id="__codelineno-14-10" name="__codelineno-14-10" href="#__codelineno-14-10"></a> <span class="n">session</span><span class="p">:</span> <span class="n">SessionDep</span><span class="p">,</span>
|
|
</span><span id="__span-14-11"><a id="__codelineno-14-11" name="__codelineno-14-11" href="#__codelineno-14-11"></a> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span>
|
|
</span><span id="__span-14-12"><a id="__codelineno-14-12" name="__codelineno-14-12" href="#__codelineno-14-12"></a> <span class="n">filter_by</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="n">Depends</span><span class="p">(</span><span class="n">UserCrud</span><span class="o">.</span><span class="n">filter_params</span><span class="p">()),</span>
|
|
</span><span id="__span-14-13"><a id="__codelineno-14-13" name="__codelineno-14-13" href="#__codelineno-14-13"></a><span class="p">)</span> <span class="o">-></span> <span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">UserRead</span><span class="p">]:</span>
|
|
</span><span id="__span-14-14"><a id="__codelineno-14-14" name="__codelineno-14-14" href="#__codelineno-14-14"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">offset_paginate</span><span class="p">(</span>
|
|
</span><span id="__span-14-15"><a id="__codelineno-14-15" name="__codelineno-14-15" href="#__codelineno-14-15"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-14-16"><a id="__codelineno-14-16" name="__codelineno-14-16" href="#__codelineno-14-16"></a> <span class="n">page</span><span class="o">=</span><span class="n">page</span><span class="p">,</span>
|
|
</span><span id="__span-14-17"><a id="__codelineno-14-17" name="__codelineno-14-17" href="#__codelineno-14-17"></a> <span class="n">filter_by</span><span class="o">=</span><span class="n">filter_by</span><span class="p">,</span>
|
|
</span><span id="__span-14-18"><a id="__codelineno-14-18" name="__codelineno-14-18" href="#__codelineno-14-18"></a> <span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<p>Both single-value and multi-value query parameters work:</p>
|
|
<div class="language-text highlight"><pre><span></span><code><span id="__span-15-1"><a id="__codelineno-15-1" name="__codelineno-15-1" href="#__codelineno-15-1"></a>GET /users?status=active → filter_by={"status": ["active"]}
|
|
</span><span id="__span-15-2"><a id="__codelineno-15-2" name="__codelineno-15-2" href="#__codelineno-15-2"></a>GET /users?status=active&country=FR → filter_by={"status": ["active"], "country": ["FR"]}
|
|
</span><span id="__span-15-3"><a id="__codelineno-15-3" name="__codelineno-15-3" href="#__codelineno-15-3"></a>GET /users?role=admin&role=editor → filter_by={"role": ["admin", "editor"]} (IN clause)
|
|
</span></code></pre></div>
|
|
<h2 id="relationship-loading">Relationship loading<a class="headerlink" href="#relationship-loading" title="Permanent link">¶</a></h2>
|
|
<div class="admonition info">
|
|
<p class="admonition-title">Added in <code>v1.1</code></p>
|
|
</div>
|
|
<p>By default, SQLAlchemy relationships are not loaded unless explicitly requested. Instead of using <code>lazy="selectin"</code> on model definitions (which is implicit and applies globally), define a <code>default_load_options</code> on the CRUD class to control loading strategy explicitly.</p>
|
|
<div class="admonition warning">
|
|
<p class="admonition-title">Warning</p>
|
|
<p>Avoid using <code>lazy="selectin"</code> on model relationships. It fires silently on every query, cannot be disabled per-call, and can cause unexpected cascading loads through deep relationship chains. Use <code>default_load_options</code> instead.</p>
|
|
</div>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-16-1"><a id="__codelineno-16-1" name="__codelineno-16-1" href="#__codelineno-16-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">sqlalchemy.orm</span><span class="w"> </span><span class="kn">import</span> <span class="n">selectinload</span>
|
|
</span><span id="__span-16-2"><a id="__codelineno-16-2" name="__codelineno-16-2" href="#__codelineno-16-2"></a>
|
|
</span><span id="__span-16-3"><a id="__codelineno-16-3" name="__codelineno-16-3" href="#__codelineno-16-3"></a><span class="n">ArticleCrud</span> <span class="o">=</span> <span class="n">CrudFactory</span><span class="p">(</span>
|
|
</span><span id="__span-16-4"><a id="__codelineno-16-4" name="__codelineno-16-4" href="#__codelineno-16-4"></a> <span class="n">model</span><span class="o">=</span><span class="n">Article</span><span class="p">,</span>
|
|
</span><span id="__span-16-5"><a id="__codelineno-16-5" name="__codelineno-16-5" href="#__codelineno-16-5"></a> <span class="n">default_load_options</span><span class="o">=</span><span class="p">[</span>
|
|
</span><span id="__span-16-6"><a id="__codelineno-16-6" name="__codelineno-16-6" href="#__codelineno-16-6"></a> <span class="n">selectinload</span><span class="p">(</span><span class="n">Article</span><span class="o">.</span><span class="n">category</span><span class="p">),</span>
|
|
</span><span id="__span-16-7"><a id="__codelineno-16-7" name="__codelineno-16-7" href="#__codelineno-16-7"></a> <span class="n">selectinload</span><span class="p">(</span><span class="n">Article</span><span class="o">.</span><span class="n">tags</span><span class="p">),</span>
|
|
</span><span id="__span-16-8"><a id="__codelineno-16-8" name="__codelineno-16-8" href="#__codelineno-16-8"></a> <span class="p">],</span>
|
|
</span><span id="__span-16-9"><a id="__codelineno-16-9" name="__codelineno-16-9" href="#__codelineno-16-9"></a><span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<p><code>default_load_options</code> applies automatically to all read operations (<code>get</code>, <code>first</code>, <code>get_multi</code>, <code>offset_paginate</code>, <code>cursor_paginate</code>). When <code>load_options</code> is passed at call-site, it <strong>fully replaces</strong> <code>default_load_options</code> for that query — giving you precise per-call control:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-17-1"><a id="__codelineno-17-1" name="__codelineno-17-1" href="#__codelineno-17-1"></a><span class="c1"># Only loads category, tags are not loaded</span>
|
|
</span><span id="__span-17-2"><a id="__codelineno-17-2" name="__codelineno-17-2" href="#__codelineno-17-2"></a><span class="n">article</span> <span class="o">=</span> <span class="k">await</span> <span class="n">ArticleCrud</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
|
|
</span><span id="__span-17-3"><a id="__codelineno-17-3" name="__codelineno-17-3" href="#__codelineno-17-3"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-17-4"><a id="__codelineno-17-4" name="__codelineno-17-4" href="#__codelineno-17-4"></a> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">Article</span><span class="o">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">article_id</span><span class="p">],</span>
|
|
</span><span id="__span-17-5"><a id="__codelineno-17-5" name="__codelineno-17-5" href="#__codelineno-17-5"></a> <span class="n">load_options</span><span class="o">=</span><span class="p">[</span><span class="n">selectinload</span><span class="p">(</span><span class="n">Article</span><span class="o">.</span><span class="n">category</span><span class="p">)],</span>
|
|
</span><span id="__span-17-6"><a id="__codelineno-17-6" name="__codelineno-17-6" href="#__codelineno-17-6"></a><span class="p">)</span>
|
|
</span><span id="__span-17-7"><a id="__codelineno-17-7" name="__codelineno-17-7" href="#__codelineno-17-7"></a>
|
|
</span><span id="__span-17-8"><a id="__codelineno-17-8" name="__codelineno-17-8" href="#__codelineno-17-8"></a><span class="c1"># Loads nothing — useful for write-then-refresh flows or lightweight checks</span>
|
|
</span><span id="__span-17-9"><a id="__codelineno-17-9" name="__codelineno-17-9" href="#__codelineno-17-9"></a><span class="n">articles</span> <span class="o">=</span> <span class="k">await</span> <span class="n">ArticleCrud</span><span class="o">.</span><span class="n">get_multi</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">load_options</span><span class="o">=</span><span class="p">[])</span>
|
|
</span></code></pre></div>
|
|
<h2 id="many-to-many-relationships">Many-to-many relationships<a class="headerlink" href="#many-to-many-relationships" title="Permanent link">¶</a></h2>
|
|
<p>Use <code>m2m_fields</code> to map schema fields containing lists of IDs to SQLAlchemy relationships. The CRUD class resolves and validates all IDs before persisting:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-18-1"><a id="__codelineno-18-1" name="__codelineno-18-1" href="#__codelineno-18-1"></a><span class="n">PostCrud</span> <span class="o">=</span> <span class="n">CrudFactory</span><span class="p">(</span>
|
|
</span><span id="__span-18-2"><a id="__codelineno-18-2" name="__codelineno-18-2" href="#__codelineno-18-2"></a> <span class="n">model</span><span class="o">=</span><span class="n">Post</span><span class="p">,</span>
|
|
</span><span id="__span-18-3"><a id="__codelineno-18-3" name="__codelineno-18-3" href="#__codelineno-18-3"></a> <span class="n">m2m_fields</span><span class="o">=</span><span class="p">{</span><span class="s2">"tag_ids"</span><span class="p">:</span> <span class="n">Post</span><span class="o">.</span><span class="n">tags</span><span class="p">},</span>
|
|
</span><span id="__span-18-4"><a id="__codelineno-18-4" name="__codelineno-18-4" href="#__codelineno-18-4"></a><span class="p">)</span>
|
|
</span><span id="__span-18-5"><a id="__codelineno-18-5" name="__codelineno-18-5" href="#__codelineno-18-5"></a>
|
|
</span><span id="__span-18-6"><a id="__codelineno-18-6" name="__codelineno-18-6" href="#__codelineno-18-6"></a><span class="n">post</span> <span class="o">=</span> <span class="k">await</span> <span class="n">PostCrud</span><span class="o">.</span><span class="n">create</span><span class="p">(</span><span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span> <span class="n">obj</span><span class="o">=</span><span class="n">PostCreateSchema</span><span class="p">(</span><span class="n">title</span><span class="o">=</span><span class="s2">"Hello"</span><span class="p">,</span> <span class="n">tag_ids</span><span class="o">=</span><span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">]))</span>
|
|
</span></code></pre></div>
|
|
<h2 id="upsert">Upsert<a class="headerlink" href="#upsert" title="Permanent link">¶</a></h2>
|
|
<p>Atomic <code>INSERT ... ON CONFLICT DO UPDATE</code> using PostgreSQL:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-19-1"><a id="__codelineno-19-1" name="__codelineno-19-1" href="#__codelineno-19-1"></a><span class="k">await</span> <span class="n">UserCrud</span><span class="o">.</span><span class="n">upsert</span><span class="p">(</span>
|
|
</span><span id="__span-19-2"><a id="__codelineno-19-2" name="__codelineno-19-2" href="#__codelineno-19-2"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-19-3"><a id="__codelineno-19-3" name="__codelineno-19-3" href="#__codelineno-19-3"></a> <span class="n">obj</span><span class="o">=</span><span class="n">UserCreateSchema</span><span class="p">(</span><span class="n">email</span><span class="o">=</span><span class="s2">"alice@example.com"</span><span class="p">,</span> <span class="n">username</span><span class="o">=</span><span class="s2">"alice"</span><span class="p">),</span>
|
|
</span><span id="__span-19-4"><a id="__codelineno-19-4" name="__codelineno-19-4" href="#__codelineno-19-4"></a> <span class="n">index_elements</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">email</span><span class="p">],</span>
|
|
</span><span id="__span-19-5"><a id="__codelineno-19-5" name="__codelineno-19-5" href="#__codelineno-19-5"></a> <span class="n">set_</span><span class="o">=</span><span class="p">{</span><span class="s2">"username"</span><span class="p">},</span>
|
|
</span><span id="__span-19-6"><a id="__codelineno-19-6" name="__codelineno-19-6" href="#__codelineno-19-6"></a><span class="p">)</span>
|
|
</span></code></pre></div>
|
|
<h2 id="response-serialization">Response serialization<a class="headerlink" href="#response-serialization" title="Permanent link">¶</a></h2>
|
|
<div class="admonition info">
|
|
<p class="admonition-title">Added in <code>v1.1</code></p>
|
|
</div>
|
|
<p>Pass a Pydantic schema class to <code>create</code>, <code>get</code>, <code>update</code>, or <code>offset_paginate</code> to serialize the result directly into that schema and wrap it in a <a href="../../reference/schemas/#fastapi_toolsets.schemas.Response"><code>Response[schema]</code></a> or <a href="../../reference/schemas/#fastapi_toolsets.schemas.PaginatedResponse"><code>PaginatedResponse[schema]</code></a>:</p>
|
|
<div class="language-python highlight"><pre><span></span><code><span id="__span-20-1"><a id="__codelineno-20-1" name="__codelineno-20-1" href="#__codelineno-20-1"></a><span class="k">class</span><span class="w"> </span><span class="nc">UserRead</span><span class="p">(</span><span class="n">PydanticBase</span><span class="p">):</span>
|
|
</span><span id="__span-20-2"><a id="__codelineno-20-2" name="__codelineno-20-2" href="#__codelineno-20-2"></a> <span class="nb">id</span><span class="p">:</span> <span class="n">UUID</span>
|
|
</span><span id="__span-20-3"><a id="__codelineno-20-3" name="__codelineno-20-3" href="#__codelineno-20-3"></a> <span class="n">username</span><span class="p">:</span> <span class="nb">str</span>
|
|
</span><span id="__span-20-4"><a id="__codelineno-20-4" name="__codelineno-20-4" href="#__codelineno-20-4"></a>
|
|
</span><span id="__span-20-5"><a id="__codelineno-20-5" name="__codelineno-20-5" href="#__codelineno-20-5"></a><span class="nd">@router</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
|
|
</span><span id="__span-20-6"><a id="__codelineno-20-6" name="__codelineno-20-6" href="#__codelineno-20-6"></a> <span class="s2">"/</span><span class="si">{uuid}</span><span class="s2">"</span><span class="p">,</span>
|
|
</span><span id="__span-20-7"><a id="__codelineno-20-7" name="__codelineno-20-7" href="#__codelineno-20-7"></a> <span class="n">responses</span><span class="o">=</span><span class="n">generate_error_responses</span><span class="p">(</span><span class="n">NotFoundError</span><span class="p">),</span>
|
|
</span><span id="__span-20-8"><a id="__codelineno-20-8" name="__codelineno-20-8" href="#__codelineno-20-8"></a><span class="p">)</span>
|
|
</span><span id="__span-20-9"><a id="__codelineno-20-9" name="__codelineno-20-9" href="#__codelineno-20-9"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">get_user</span><span class="p">(</span><span class="n">session</span><span class="p">:</span> <span class="n">SessionDep</span><span class="p">,</span> <span class="n">uuid</span><span class="p">:</span> <span class="n">UUID</span><span class="p">)</span> <span class="o">-></span> <span class="n">Response</span><span class="p">[</span><span class="n">UserRead</span><span class="p">]:</span>
|
|
</span><span id="__span-20-10"><a id="__codelineno-20-10" name="__codelineno-20-10" href="#__codelineno-20-10"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">crud</span><span class="o">.</span><span class="n">UserCrud</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
|
|
</span><span id="__span-20-11"><a id="__codelineno-20-11" name="__codelineno-20-11" href="#__codelineno-20-11"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
|
|
</span><span id="__span-20-12"><a id="__codelineno-20-12" name="__codelineno-20-12" href="#__codelineno-20-12"></a> <span class="n">filters</span><span class="o">=</span><span class="p">[</span><span class="n">User</span><span class="o">.</span><span class="n">id</span> <span class="o">==</span> <span class="n">uuid</span><span class="p">],</span>
|
|
</span><span id="__span-20-13"><a id="__codelineno-20-13" name="__codelineno-20-13" href="#__codelineno-20-13"></a> <span class="n">schema</span><span class="o">=</span><span class="n">UserRead</span><span class="p">,</span>
|
|
</span><span id="__span-20-14"><a id="__codelineno-20-14" name="__codelineno-20-14" href="#__codelineno-20-14"></a> <span class="p">)</span>
|
|
</span><span id="__span-20-15"><a id="__codelineno-20-15" name="__codelineno-20-15" href="#__codelineno-20-15"></a>
|
|
</span><span id="__span-20-16"><a id="__codelineno-20-16" name="__codelineno-20-16" href="#__codelineno-20-16"></a><span class="nd">@router</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">""</span><span class="p">)</span>
|
|
</span><span id="__span-20-17"><a id="__codelineno-20-17" name="__codelineno-20-17" href="#__codelineno-20-17"></a><span class="k">async</span> <span class="k">def</span><span class="w"> </span><span class="nf">list_users</span><span class="p">(</span><span class="n">session</span><span class="p">:</span> <span class="n">SessionDep</span><span class="p">,</span> <span class="n">page</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1</span><span class="p">)</span> <span class="o">-></span> <span class="n">PaginatedResponse</span><span class="p">[</span><span class="n">UserRead</span><span class="p">]:</span>
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</span><span id="__span-20-18"><a id="__codelineno-20-18" name="__codelineno-20-18" href="#__codelineno-20-18"></a> <span class="k">return</span> <span class="k">await</span> <span class="n">crud</span><span class="o">.</span><span class="n">UserCrud</span><span class="o">.</span><span class="n">offset_paginate</span><span class="p">(</span>
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</span><span id="__span-20-19"><a id="__codelineno-20-19" name="__codelineno-20-19" href="#__codelineno-20-19"></a> <span class="n">session</span><span class="o">=</span><span class="n">session</span><span class="p">,</span>
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</span><span id="__span-20-20"><a id="__codelineno-20-20" name="__codelineno-20-20" href="#__codelineno-20-20"></a> <span class="n">page</span><span class="o">=</span><span class="n">page</span><span class="p">,</span>
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</span><span id="__span-20-21"><a id="__codelineno-20-21" name="__codelineno-20-21" href="#__codelineno-20-21"></a> <span class="n">schema</span><span class="o">=</span><span class="n">UserRead</span><span class="p">,</span>
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</span><span id="__span-20-22"><a id="__codelineno-20-22" name="__codelineno-20-22" href="#__codelineno-20-22"></a> <span class="p">)</span>
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</span></code></pre></div>
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<p>The schema must have <code>from_attributes=True</code> (or inherit from <a href="../../reference/schemas/#fastapi_toolsets.schemas.PydanticBase"><code>PydanticBase</code></a>) so it can be built from SQLAlchemy model instances.</p>
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<div class="admonition warning">
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<p class="admonition-title">Deprecated: <code>as_response</code></p>
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<p>The <code>as_response=True</code> parameter is <strong>deprecated</strong> and will be removed in <strong>v2.0</strong>. Replace it with <code>schema=YourSchema</code>.</p>
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<p><a href="../../reference/crud/">:material-api: API Reference</a></p>
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