feat: add UUIDv7Mixin (#140)

* feat: unified paginate() endpoint with typed pagination responses

* docs: unified paginate() endpoint

* fix: add tests

docs/examples/pagination-search.md

@@ -42,12 +42,17 @@ Declare `searchable_fields`, `facet_fields`, and `order_fields` once on [`CrudFa
 
 
 ## Routes
+
+```python title="routes.py:1:17"
+--8<-- "docs_src/examples/pagination_search/routes.py:1:17"
+```
+
 ### Offset pagination
 
 Best for admin panels or any UI that needs a total item count and numbered pages.
 
-```python title="routes.py:1:36"
---8<-- "docs_src/examples/pagination_search/routes.py:1:36"
+```python title="routes.py:20:40"
+--8<-- "docs_src/examples/pagination_search/routes.py:20:40"
 ```
 
 **Example request**
@@ -61,6 +66,7 @@ GET /articles/offset?page=2&items_per_page=10&search=fastapi&status=published&or
 ```json
 {
   "status": "SUCCESS",
+  "pagination_type": "offset",
   "data": [
     { "id": "3f47ac69-...", "title": "FastAPI tips", "status": "published", ... }
   ],
@@ -83,8 +89,8 @@ GET /articles/offset?page=2&items_per_page=10&search=fastapi&status=published&or
 
 Best for feeds, infinite scroll, or any high-throughput API where offset performance degrades.
 
-```python title="routes.py:39:59"
---8<-- "docs_src/examples/pagination_search/routes.py:39:59"
+```python title="routes.py:43:63"
+--8<-- "docs_src/examples/pagination_search/routes.py:43:63"
 ```
 
 **Example request**
@@ -98,6 +104,7 @@ GET /articles/cursor?items_per_page=10&status=published&order_by=created_at&orde
 ```json
 {
   "status": "SUCCESS",
+  "pagination_type": "cursor",
   "data": [
     { "id": "3f47ac69-...", "title": "FastAPI tips", "status": "published", ... }
   ],
@@ -116,6 +123,47 @@ GET /articles/cursor?items_per_page=10&status=published&order_by=created_at&orde
 
 Pass `next_cursor` as the `cursor` query parameter on the next request to advance to the next page.
 
+### Unified endpoint (both strategies)
+
+!!! info "Added in `v2.3.0`"
+
+[`paginate()`](../module/crud.md#unified-paginate--both-strategies-on-one-endpoint) lets a single endpoint support both strategies via a `pagination_type` query parameter. The `pagination_type` field in the response acts as a discriminator for frontend tooling.
+
+```python title="routes.py:66:90"
+--8<-- "docs_src/examples/pagination_search/routes.py:66:90"
+```
+
+**Offset request** (default)
+
+```
+GET /articles/?pagination_type=offset&page=1&items_per_page=10
+```
+
+```json
+{
+  "status": "SUCCESS",
+  "pagination_type": "offset",
+  "data": ["..."],
+  "pagination": { "total_count": 42, "page": 1, "items_per_page": 10, "has_more": true }
+}
+```
+
+**Cursor request**
+
+```
+GET /articles/?pagination_type=cursor&items_per_page=10
+GET /articles/?pagination_type=cursor&items_per_page=10&cursor=eyJ2YWx1ZSI6...
+```
+
+```json
+{
+  "status": "SUCCESS",
+  "pagination_type": "cursor",
+  "data": ["..."],
+  "pagination": { "next_cursor": "eyJ2YWx1ZSI6...", "prev_cursor": null, "items_per_page": 10, "has_more": true }
+}
+```
+
 ## Search behaviour
 
 Both endpoints inherit the same `searchable_fields` declared on `ArticleCrud`:

docs/module/crud.md

@@ -145,41 +145,40 @@ user = await UserCrud.first(session=session, filters=[User.is_active == True])
 
 !!! info "Added in `v1.1` (only offset_pagination via `paginate` if `<v1.1`)"
 
-Two pagination strategies are available. Both return a [`PaginatedResponse`](../reference/schemas.md#fastapi_toolsets.schemas.PaginatedResponse) but differ in how they navigate through results.
+Three pagination methods are available.  All return a typed response whose `pagination_type` field tells clients which strategy was used.
 
-| | `offset_paginate` | `cursor_paginate` |
-|---|---|---|
-| Total count | Yes | No |
-| Jump to arbitrary page | Yes | No |
-| Performance on deep pages | Degrades | Constant |
-| Stable under concurrent inserts | No | Yes |
-| Search compatible | Yes | Yes |
-| Use case | Admin panels, numbered pagination | Feeds, APIs, infinite scroll |
+| | `offset_paginate` | `cursor_paginate` | `paginate` |
+|---|---|---|---|
+| Return type | `OffsetPaginatedResponse` | `CursorPaginatedResponse` | either, based on `pagination_type` param |
+| Total count | Yes | No | / |
+| Jump to arbitrary page | Yes | No | / |
+| Performance on deep pages | Degrades | Constant | / |
+| Stable under concurrent inserts | No | Yes | / |
+| Use case | Admin panels, numbered pagination | Feeds, APIs, infinite scroll | single endpoint, both strategies |
 
 ### Offset pagination
 
 ```python
-@router.get(
-    "",
-    response_model=PaginatedResponse[User],
-)
+@router.get("")
 async def get_users(
     session: SessionDep,
     items_per_page: int = 50,
     page: int = 1,
-):
-    return await crud.UserCrud.offset_paginate(
+) -> OffsetPaginatedResponse[UserRead]:
+    return await UserCrud.offset_paginate(
         session=session,
         items_per_page=items_per_page,
         page=page,
+        schema=UserRead,
     )
 ```
 
-The [`offset_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.offset_paginate) method returns a [`PaginatedResponse`](../reference/schemas.md#fastapi_toolsets.schemas.PaginatedResponse) whose `pagination` field is an [`OffsetPagination`](../reference/schemas.md#fastapi_toolsets.schemas.OffsetPagination) object:
+The [`offset_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.offset_paginate) method returns an [`OffsetPaginatedResponse`](../reference/schemas.md#fastapi_toolsets.schemas.OffsetPaginatedResponse):
 
 ```json
 {
   "status": "SUCCESS",
+  "pagination_type": "offset",
   "data": ["..."],
   "pagination": {
     "total_count": 100,
@@ -193,27 +192,26 @@ The [`offset_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.Async
 ### Cursor pagination
 
 ```python
-@router.get(
-    "",
-    response_model=PaginatedResponse[UserRead],
-)
+@router.get("")
 async def list_users(
     session: SessionDep,
     cursor: str | None = None,
     items_per_page: int = 20,
-):
+) -> CursorPaginatedResponse[UserRead]:
     return await UserCrud.cursor_paginate(
         session=session,
         cursor=cursor,
         items_per_page=items_per_page,
+        schema=UserRead,
     )
 ```
 
-The [`cursor_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.cursor_paginate) method returns a [`PaginatedResponse`](../reference/schemas.md#fastapi_toolsets.schemas.PaginatedResponse) whose `pagination` field is a [`CursorPagination`](../reference/schemas.md#fastapi_toolsets.schemas.CursorPagination) object:
+The [`cursor_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.cursor_paginate) method returns a [`CursorPaginatedResponse`](../reference/schemas.md#fastapi_toolsets.schemas.CursorPaginatedResponse):
 
 ```json
 {
   "status": "SUCCESS",
+  "pagination_type": "cursor",
   "data": ["..."],
   "pagination": {
     "next_cursor": "eyJ2YWx1ZSI6ICIzZjQ3YWM2OS0uLi4ifQ==",
@@ -258,6 +256,41 @@ PostCrud = CrudFactory(model=Post, cursor_column=Post.id)
 PostCrud = CrudFactory(model=Post, cursor_column=Post.created_at)
 ```
 
+### Unified endpoint (both strategies)
+
+!!! info "Added in `v2.3.0`"
+
+[`paginate()`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.paginate) dispatches to `offset_paginate` or `cursor_paginate` based on a `pagination_type` query parameter, letting you expose **one endpoint** that supports both strategies.  The `pagination_type` field in the response tells clients which strategy was used, enabling frontend discriminated-union typing.
+
+```python
+from fastapi_toolsets.crud import PaginationType
+from fastapi_toolsets.schemas import PaginatedResponse
+
+@router.get("")
+async def list_users(
+    session: SessionDep,
+    pagination_type: PaginationType = PaginationType.OFFSET,
+    page: int = Query(1, ge=1, description="Current page (offset only)"),
+    cursor: str | None = Query(None, description="Cursor token (cursor only)"),
+    items_per_page: int = Query(20, ge=1, le=100),
+) -> PaginatedResponse[UserRead]:
+    return await UserCrud.paginate(
+        session,
+        pagination_type=pagination_type,
+        page=page,
+        cursor=cursor,
+        items_per_page=items_per_page,
+        schema=UserRead,
+    )
+```
+
+```
+GET /users?pagination_type=offset&page=2&items_per_page=10
+GET /users?pagination_type=cursor&cursor=eyJ2YWx1ZSI6...&items_per_page=10
+```
+
+Both `page` and `cursor` are always accepted by the endpoint — unused parameters are silently ignored by `paginate()`.
+
 ## Search
 
 Two search strategies are available, both compatible with [`offset_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.offset_paginate) and [`cursor_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.cursor_paginate).
@@ -300,40 +333,36 @@ result = await UserCrud.offset_paginate(
 This allows searching with both [`offset_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.offset_paginate) and [`cursor_paginate`](../reference/crud.md#fastapi_toolsets.crud.factory.AsyncCrud.cursor_paginate):
 
 ```python
-@router.get(
-    "",
-    response_model=PaginatedResponse[User],
-)
+@router.get("")
 async def get_users(
     session: SessionDep,
     items_per_page: int = 50,
     page: int = 1,
     search: str | None = None,
-):
-    return await crud.UserCrud.offset_paginate(
+) -> OffsetPaginatedResponse[UserRead]:
+    return await UserCrud.offset_paginate(
         session=session,
         items_per_page=items_per_page,
         page=page,
         search=search,
+        schema=UserRead,
     )
 ```
 
 ```python
-@router.get(
-    "",
-    response_model=PaginatedResponse[User],
-)
+@router.get("")
 async def get_users(
     session: SessionDep,
     cursor: str | None = None,
     items_per_page: int = 50,
     search: str | None = None,
-):
-    return await crud.UserCrud.cursor_paginate(
+) -> CursorPaginatedResponse[UserRead]:
+    return await UserCrud.cursor_paginate(
         session=session,
         items_per_page=items_per_page,
         cursor=cursor,
         search=search,
+        schema=UserRead,
     )
 ```
 
@@ -404,11 +433,12 @@ async def list_users(
     session: SessionDep,
     page: int = 1,
     filter_by: Annotated[dict[str, list[str]], Depends(UserCrud.filter_params())],
-) -> PaginatedResponse[UserRead]:
+) -> OffsetPaginatedResponse[UserRead]:
     return await UserCrud.offset_paginate(
         session=session,
         page=page,
         filter_by=filter_by,
+        schema=UserRead,
     )
 ```
 
@@ -448,8 +478,8 @@ from fastapi_toolsets.crud import OrderByClause
 async def list_users(
     session: SessionDep,
     order_by: Annotated[OrderByClause | None, Depends(UserCrud.order_params())],
-) -> PaginatedResponse[UserRead]:
-    return await UserCrud.offset_paginate(session=session, order_by=order_by)
+) -> OffsetPaginatedResponse[UserRead]:
+    return await UserCrud.offset_paginate(session=session, order_by=order_by, schema=UserRead)
 ```
 
 The dependency adds two query parameters to the endpoint:
@@ -556,7 +586,7 @@ async def get_user(session: SessionDep, uuid: UUID) -> Response[UserRead]:
     )
 
 @router.get("")
-async def list_users(session: SessionDep, page: int = 1) -> PaginatedResponse[UserRead]:
+async def list_users(session: SessionDep, page: int = 1) -> OffsetPaginatedResponse[UserRead]:
     return await crud.UserCrud.offset_paginate(
         session=session,
         page=page,

docs/module/models.md

@@ -18,13 +18,15 @@ class Article(Base, UUIDMixin, TimestampMixin):
     content: Mapped[str]
 ```
 
-All timestamp columns are timezone-aware (`TIMESTAMPTZ`). All defaults are server-side, so they are also applied when inserting rows via raw SQL outside the ORM.
+All timestamp columns are timezone-aware (`TIMESTAMPTZ`). All defaults are server-side (`clock_timestamp()`), so they are also applied when inserting rows via raw SQL outside the ORM.
 
 ## Mixins
 
 ### [`UUIDMixin`](../reference/models.md#fastapi_toolsets.models.UUIDMixin)
 
-Adds a `id: UUID` primary key generated server-side by PostgreSQL using `gen_random_uuid()` (requires PostgreSQL 13+). The value is retrieved via `RETURNING` after insert, so it is available on the Python object immediately after `flush()`.
+Adds a `id: UUID` primary key generated server-side by PostgreSQL using `gen_random_uuid()`. The value is retrieved via `RETURNING` after insert, so it is available on the Python object immediately after `flush()`.
+
+!!! warning "Requires PostgreSQL 13+"
 
 ```python
 from fastapi_toolsets.models import UUIDMixin
@@ -36,13 +38,37 @@ class User(Base, UUIDMixin):
 
 # id is None before flush
 user = User(username="alice")
+session.add(user)
 await session.flush()
 print(user.id)  # UUID('...')
 ```
 
+### [`UUIDv7Mixin`](../reference/models.md#fastapi_toolsets.models.UUIDv7Mixin)
+
+!!! info "Added in `v2.3`"
+
+Adds a `id: UUID` primary key generated server-side by PostgreSQL using `uuidv7()`. It's a time-ordered UUID format that encodes a millisecond-precision timestamp in the most significant bits, making it naturally sortable and index-friendly.
+
+!!! warning "Requires PostgreSQL 18+"
+
+```python
+from fastapi_toolsets.models import UUIDv7Mixin
+
+class Event(Base, UUIDv7Mixin):
+    __tablename__ = "events"
+
+    name: Mapped[str]
+
+# id is None before flush
+event = Event(name="user.signup")
+session.add(event)
+await session.flush()
+print(event.id)  # UUID('019...')
+```
+
 ### [`CreatedAtMixin`](../reference/models.md#fastapi_toolsets.models.CreatedAtMixin)
 
-Adds a `created_at: datetime` column set to `NOW()` on insert. The column has no `onupdate` hook — it is intentionally immutable after the row is created.
+Adds a `created_at: datetime` column set to `clock_timestamp()` on insert. The column has no `onupdate` hook — it is intentionally immutable after the row is created.
 
 ```python
 from fastapi_toolsets.models import UUIDMixin, CreatedAtMixin
@@ -55,7 +81,7 @@ class Order(Base, UUIDMixin, CreatedAtMixin):
 
 ### [`UpdatedAtMixin`](../reference/models.md#fastapi_toolsets.models.UpdatedAtMixin)
 
-Adds an `updated_at: datetime` column set to `NOW()` on insert and automatically updated to `NOW()` on every ORM-level update (via SQLAlchemy's `onupdate` hook).
+Adds an `updated_at: datetime` column set to `clock_timestamp()` on insert and automatically updated to `clock_timestamp()` on every ORM-level update (via SQLAlchemy's `onupdate` hook).
 
 ```python
 from fastapi_toolsets.models import UUIDMixin, UpdatedAtMixin

docs/module/schemas.md

@@ -20,50 +20,113 @@ async def get_user(user: User = UserDep) -> Response[UserSchema]:
     return Response(data=user, message="User retrieved")
 ```
 
-### [`PaginatedResponse[T]`](../reference/schemas.md#fastapi_toolsets.schemas.PaginatedResponse)
+### Paginated response models
 
-Wraps a list of items with pagination metadata and optional facet values. The `pagination` field accepts either [`OffsetPagination`](../reference/schemas.md#fastapi_toolsets.schemas.OffsetPagination) or [`CursorPagination`](../reference/schemas.md#fastapi_toolsets.schemas.CursorPagination) depending on the strategy used.
+Three classes wrap paginated list results. Pick the one that matches your endpoint's strategy:
 
-#### [`OffsetPagination`](../reference/schemas.md#fastapi_toolsets.schemas.OffsetPagination)
+| Class | `pagination` type | `pagination_type` field | Use when |
+|---|---|---|---|
+| [`OffsetPaginatedResponse[T]`](#offsetpaginatedresponset) | `OffsetPagination` | `"offset"` (fixed) | endpoint always uses offset |
+| [`CursorPaginatedResponse[T]`](#cursorpaginatedresponset) | `CursorPagination` | `"cursor"` (fixed) | endpoint always uses cursor |
+| [`PaginatedResponse[T]`](#paginatedresponset) | `OffsetPagination \| CursorPagination` | — | unified endpoint supporting both strategies |
 
-Page-number based. Requires `total_count` so clients can compute the total number of pages.
+#### [`OffsetPaginatedResponse[T]`](../reference/schemas.md#fastapi_toolsets.schemas.OffsetPaginatedResponse)
+
+!!! info "Added in `v2.3.0`"
+
+Use as the return type when the endpoint always uses [`offset_paginate`](crud.md#offset-pagination).  The `pagination` field is guaranteed to be an [`OffsetPagination`](../reference/schemas.md#fastapi_toolsets.schemas.OffsetPagination) object; the response always includes a `pagination_type: "offset"` discriminator.
 
 ```python
-from fastapi_toolsets.schemas import PaginatedResponse, OffsetPagination
+from fastapi_toolsets.schemas import OffsetPaginatedResponse
 
 @router.get("/users")
-async def list_users() -> PaginatedResponse[UserSchema]:
-    return PaginatedResponse(
-        data=users,
-        pagination=OffsetPagination(
-            total_count=100,
-            items_per_page=10,
-            page=1,
-            has_more=True,
-        ),
+async def list_users(
+    page: int = 1,
+    items_per_page: int = 20,
+) -> OffsetPaginatedResponse[UserSchema]:
+    return await UserCrud.offset_paginate(
+        session, page=page, items_per_page=items_per_page, schema=UserSchema
     )
 ```
 
-#### [`CursorPagination`](../reference/schemas.md#fastapi_toolsets.schemas.CursorPagination)
+**Response shape:**
 
-Cursor based. Efficient for large or frequently updated datasets where offset pagination is impractical. Provides opaque `next_cursor` / `prev_cursor` tokens; no total count is exposed.
+```json
+{
+  "status": "SUCCESS",
+  "pagination_type": "offset",
+  "data": ["..."],
+  "pagination": {
+    "total_count": 100,
+    "page": 1,
+    "items_per_page": 20,
+    "has_more": true
+  }
+}
+```
+
+#### [`CursorPaginatedResponse[T]`](../reference/schemas.md#fastapi_toolsets.schemas.CursorPaginatedResponse)
+
+!!! info "Added in `v2.3.0`"
+
+Use as the return type when the endpoint always uses [`cursor_paginate`](crud.md#cursor-pagination).  The `pagination` field is guaranteed to be a [`CursorPagination`](../reference/schemas.md#fastapi_toolsets.schemas.CursorPagination) object; the response always includes a `pagination_type: "cursor"` discriminator.
 
 ```python
-from fastapi_toolsets.schemas import PaginatedResponse, CursorPagination
+from fastapi_toolsets.schemas import CursorPaginatedResponse
 
 @router.get("/events")
-async def list_events() -> PaginatedResponse[EventSchema]:
-    return PaginatedResponse(
-        data=events,
-        pagination=CursorPagination(
-            next_cursor="eyJpZCI6IDQyfQ==",
-            prev_cursor=None,
-            items_per_page=20,
-            has_more=True,
-        ),
+async def list_events(
+    cursor: str | None = None,
+    items_per_page: int = 20,
+) -> CursorPaginatedResponse[EventSchema]:
+    return await EventCrud.cursor_paginate(
+        session, cursor=cursor, items_per_page=items_per_page, schema=EventSchema
     )
 ```
 
+**Response shape:**
+
+```json
+{
+  "status": "SUCCESS",
+  "pagination_type": "cursor",
+  "data": ["..."],
+  "pagination": {
+    "next_cursor": "eyJpZCI6IDQyfQ==",
+    "prev_cursor": null,
+    "items_per_page": 20,
+    "has_more": true
+  }
+}
+```
+
+#### [`PaginatedResponse[T]`](../reference/schemas.md#fastapi_toolsets.schemas.PaginatedResponse)
+
+Base class and return type for endpoints that support **both** pagination strategies via a `pagination_type` query parameter (using [`paginate()`](crud.md#unified-paginate--both-strategies-on-one-endpoint))
+
+```python
+from fastapi_toolsets.crud import PaginationType
+from fastapi_toolsets.schemas import PaginatedResponse
+
+@router.get("/users")
+async def list_users(
+    pagination_type: PaginationType = PaginationType.OFFSET,
+    page: int = 1,
+    cursor: str | None = None,
+    items_per_page: int = 20,
+) -> PaginatedResponse[UserSchema]:
+    return await UserCrud.paginate(
+        session,
+        pagination_type=pagination_type,
+        page=page,
+        cursor=cursor,
+        items_per_page=items_per_page,
+        schema=UserSchema,
+    )
+```
+
+#### Pagination metadata models
+
 The optional `filter_attributes` field is populated when `facet_fields` are configured on the CRUD class (see [Filter attributes](crud.md#filter-attributes-facets)). It is `None` by default and can be hidden from API responses with `response_model_exclude_none=True`.
 
 ### [`ErrorResponse`](../reference/schemas.md#fastapi_toolsets.schemas.ErrorResponse)

docs/reference/models.md

@@ -7,6 +7,7 @@ You can import them directly from `fastapi_toolsets.models`:
 ```python
 from fastapi_toolsets.models import (
     UUIDMixin,
+    UUIDv7Mixin,
     CreatedAtMixin,
     UpdatedAtMixin,
     TimestampMixin,
@@ -15,6 +16,8 @@ from fastapi_toolsets.models import (
 
 ## ::: fastapi_toolsets.models.UUIDMixin
 
+## ::: fastapi_toolsets.models.UUIDv7Mixin
+
 ## ::: fastapi_toolsets.models.CreatedAtMixin
 
 ## ::: fastapi_toolsets.models.UpdatedAtMixin

docs/reference/schemas.md

@@ -14,7 +14,10 @@ from fastapi_toolsets.schemas import (
     ErrorResponse,
     OffsetPagination,
     CursorPagination,
+    PaginationType,
     PaginatedResponse,
+    OffsetPaginatedResponse,
+    CursorPaginatedResponse,
 )
 ```
 
@@ -34,4 +37,10 @@ from fastapi_toolsets.schemas import (
 
 ## ::: fastapi_toolsets.schemas.CursorPagination
 
+## ::: fastapi_toolsets.schemas.PaginationType
+
 ## ::: fastapi_toolsets.schemas.PaginatedResponse
+
+## ::: fastapi_toolsets.schemas.OffsetPaginatedResponse
+
+## ::: fastapi_toolsets.schemas.CursorPaginatedResponse

docs_src/examples/pagination_search/models.py

@@ -1,9 +1,10 @@
-import datetime
 import uuid
 
-from sqlalchemy import Boolean, DateTime, ForeignKey, String, Text, func
+from sqlalchemy import Boolean, ForeignKey, String, Text
 from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, relationship
 
+from fastapi_toolsets.models import CreatedAtMixin
+
 
 class Base(DeclarativeBase):
     pass
@@ -18,13 +19,10 @@ class Category(Base):
     articles: Mapped[list["Article"]] = relationship(back_populates="category")
 
 
-class Article(Base):
+class Article(Base, CreatedAtMixin):
     __tablename__ = "articles"
 
     id: Mapped[uuid.UUID] = mapped_column(primary_key=True, default=uuid.uuid4)
-    created_at: Mapped[datetime.datetime] = mapped_column(
-        DateTime(timezone=True), server_default=func.now()
-    )
     title: Mapped[str] = mapped_column(String(256))
     body: Mapped[str] = mapped_column(Text)
     status: Mapped[str] = mapped_column(String(32))

docs_src/examples/pagination_search/routes.py

@@ -2,8 +2,12 @@ from typing import Annotated
 
 from fastapi import APIRouter, Depends, Query
 
-from fastapi_toolsets.crud import OrderByClause
-from fastapi_toolsets.schemas import PaginatedResponse
+from fastapi_toolsets.crud import OrderByClause, PaginationType
+from fastapi_toolsets.schemas import (
+    CursorPaginatedResponse,
+    OffsetPaginatedResponse,
+    PaginatedResponse,
+)
 
 from .crud import ArticleCrud
 from .db import SessionDep
@@ -24,7 +28,7 @@ async def list_articles_offset(
     page: int = Query(1, ge=1),
     items_per_page: int = Query(20, ge=1, le=100),
     search: str | None = None,
-) -> PaginatedResponse[ArticleRead]:
+) -> OffsetPaginatedResponse[ArticleRead]:
     return await ArticleCrud.offset_paginate(
         session=session,
         page=page,
@@ -47,7 +51,7 @@ async def list_articles_cursor(
     cursor: str | None = None,
     items_per_page: int = Query(20, ge=1, le=100),
     search: str | None = None,
-) -> PaginatedResponse[ArticleRead]:
+) -> CursorPaginatedResponse[ArticleRead]:
     return await ArticleCrud.cursor_paginate(
         session=session,
         cursor=cursor,
@@ -57,3 +61,30 @@ async def list_articles_cursor(
         order_by=order_by,
         schema=ArticleRead,
     )
+
+
+@router.get("/")
+async def list_articles(
+    session: SessionDep,
+    filter_by: Annotated[dict[str, list[str]], Depends(ArticleCrud.filter_params())],
+    order_by: Annotated[
+        OrderByClause | None,
+        Depends(ArticleCrud.order_params(default_field=Article.created_at)),
+    ],
+    pagination_type: PaginationType = PaginationType.OFFSET,
+    page: int = Query(1, ge=1),
+    cursor: str | None = None,
+    items_per_page: int = Query(20, ge=1, le=100),
+    search: str | None = None,
+) -> PaginatedResponse[ArticleRead]:
+    return await ArticleCrud.paginate(
+        session,
+        pagination_type=pagination_type,
+        page=page,
+        cursor=cursor,
+        items_per_page=items_per_page,
+        search=search,
+        filter_by=filter_by or None,
+        order_by=order_by,
+        schema=ArticleRead,
+    )

src/fastapi_toolsets/crud/__init__.py

@@ -1,6 +1,7 @@
 """Generic async CRUD operations for SQLAlchemy models."""
 
 from ..exceptions import InvalidFacetFilterError, NoSearchableFieldsError
+from ..schemas import PaginationType
 from ..types import (
     FacetFieldType,
     JoinType,
@@ -8,10 +9,11 @@ from ..types import (
     OrderByClause,
     SearchFieldType,
 )
-from .factory import CrudFactory
+from .factory import AsyncCrud, CrudFactory
 from .search import SearchConfig, get_searchable_fields
 
 __all__ = [
+    "AsyncCrud",
     "CrudFactory",
     "FacetFieldType",
     "get_searchable_fields",
@@ -20,6 +22,7 @@ __all__ = [
     "M2MFieldType",
     "NoSearchableFieldsError",
     "OrderByClause",
+    "PaginationType",
     "SearchConfig",
     "SearchFieldType",
 ]

src/fastapi_toolsets/crud/factory.py

@@ -23,7 +23,14 @@ from sqlalchemy.sql.roles import WhereHavingRole
 
 from ..db import get_transaction
 from ..exceptions import InvalidOrderFieldError, NotFoundError
-from ..schemas import CursorPagination, OffsetPagination, PaginatedResponse, Response
+from ..schemas import (
+    CursorPaginatedResponse,
+    CursorPagination,
+    OffsetPaginatedResponse,
+    OffsetPagination,
+    PaginationType,
+    Response,
+)
 from ..types import (
     FacetFieldType,
     JoinType,
@@ -42,14 +49,17 @@ from .search import (
 )
 
 
-def _encode_cursor(value: Any) -> str:
-    """Encode cursor column value as an base64 string."""
-    return base64.b64encode(json.dumps(str(value)).encode()).decode()
+def _encode_cursor(value: Any, *, direction: str = "next") -> str:
+    """Encode a cursor column value and navigation direction as a base64 string."""
+    return base64.b64encode(
+        json.dumps({"val": str(value), "dir": direction}).encode()
+    ).decode()
 
 
-def _decode_cursor(cursor: str) -> str:
-    """Decode cursor base64 string."""
-    return json.loads(base64.b64decode(cursor.encode()).decode())
+def _decode_cursor(cursor: str) -> tuple[str, str]:
+    """Decode a cursor base64 string into ``(raw_value, direction)``."""
+    payload = json.loads(base64.b64decode(cursor.encode()).decode())
+    return payload["val"], payload["dir"]
 
 
 def _apply_joins(q: Any, joins: JoinType | None, outer_join: bool) -> Any:
@@ -889,7 +899,7 @@ class AsyncCrud(Generic[ModelType]):
         facet_fields: Sequence[FacetFieldType] | None = None,
         filter_by: dict[str, Any] | BaseModel | None = None,
         schema: type[BaseModel],
-    ) -> PaginatedResponse[Any]:
+    ) -> OffsetPaginatedResponse[Any]:
         """Get paginated results using offset-based pagination.
 
         Args:
@@ -971,7 +981,7 @@ class AsyncCrud(Generic[ModelType]):
             session, facet_fields, filters, search_joins
         )
 
-        return PaginatedResponse(
+        return OffsetPaginatedResponse(
             data=items,
             pagination=OffsetPagination(
                 total_count=total_count,
@@ -999,7 +1009,7 @@ class AsyncCrud(Generic[ModelType]):
         facet_fields: Sequence[FacetFieldType] | None = None,
         filter_by: dict[str, Any] | BaseModel | None = None,
         schema: type[BaseModel],
-    ) -> PaginatedResponse[Any]:
+    ) -> CursorPaginatedResponse[Any]:
         """Get paginated results using cursor-based pagination.
 
         Args:
@@ -1038,8 +1048,9 @@ class AsyncCrud(Generic[ModelType]):
         cursor_column: Any = cls.cursor_column
         cursor_col_name: str = cursor_column.key
 
+        direction = "next"
         if cursor is not None:
-            raw_val = _decode_cursor(cursor)
+            raw_val, direction = _decode_cursor(cursor)
             col_type = cursor_column.property.columns[0].type
             if isinstance(col_type, Integer):
                 cursor_val: Any = int(raw_val)
@@ -1057,6 +1068,9 @@ class AsyncCrud(Generic[ModelType]):
                     "Supported types: Integer, BigInteger, SmallInteger, Uuid, "
                     "DateTime, Date, Float, Numeric."
                 )
+            if direction == "prev":
+                filters.append(cursor_column < cursor_val)
+            else:
                 filters.append(cursor_column > cursor_val)
 
         # Build search filters
@@ -1084,12 +1098,15 @@ class AsyncCrud(Generic[ModelType]):
         if resolved := cls._resolve_load_options(load_options):
             q = q.options(*resolved)
 
-        # Cursor column is always the primary sort
+        # Cursor column is always the primary sort; reverse direction for prev traversal
+        if direction == "prev":
+            q = q.order_by(cursor_column.desc())
+        else:
             q = q.order_by(cursor_column)
         if order_by is not None:
             q = q.order_by(order_by)
 
-        # Fetch one extra to detect whether a next page exists
+        # Fetch one extra to detect whether another page exists in this direction
         q = q.limit(items_per_page + 1)
         result = await session.execute(q)
         raw_items = cast(list[ModelType], result.unique().scalars().all())
@@ -1097,15 +1114,34 @@ class AsyncCrud(Generic[ModelType]):
         has_more = len(raw_items) > items_per_page
         items_page = raw_items[:items_per_page]
 
-        # next_cursor points past the last item on this page
-        next_cursor: str | None = None
-        if has_more and items_page:
-            next_cursor = _encode_cursor(getattr(items_page[-1], cursor_col_name))
+        # Restore ascending order when traversing backward
+        if direction == "prev":
+            items_page = list(reversed(items_page))
 
-        # prev_cursor points to the first item on this page or None when on the first page
+        # next_cursor: points past the last item in ascending order
+        next_cursor: str | None = None
+        if direction == "next":
+            if has_more and items_page:
+                next_cursor = _encode_cursor(
+                    getattr(items_page[-1], cursor_col_name), direction="next"
+                )
+        else:
+            # Going backward: always provide a next_cursor to allow returning forward
+            if items_page:
+                next_cursor = _encode_cursor(
+                    getattr(items_page[-1], cursor_col_name), direction="next"
+                )
+
+        # prev_cursor: points before the first item in ascending order
         prev_cursor: str | None = None
-        if cursor is not None and items_page:
-            prev_cursor = _encode_cursor(getattr(items_page[0], cursor_col_name))
+        if direction == "next" and cursor is not None and items_page:
+            prev_cursor = _encode_cursor(
+                getattr(items_page[0], cursor_col_name), direction="prev"
+            )
+        elif direction == "prev" and has_more and items_page:
+            prev_cursor = _encode_cursor(
+                getattr(items_page[0], cursor_col_name), direction="prev"
+            )
 
         items: list[Any] = [schema.model_validate(item) for item in items_page]
 
@@ -1113,7 +1149,7 @@ class AsyncCrud(Generic[ModelType]):
             session, facet_fields, filters, search_joins
         )
 
-        return PaginatedResponse(
+        return CursorPaginatedResponse(
             data=items,
             pagination=CursorPagination(
                 next_cursor=next_cursor,
@@ -1124,6 +1160,144 @@ class AsyncCrud(Generic[ModelType]):
             filter_attributes=filter_attributes,
         )
 
+    @overload
+    @classmethod
+    async def paginate(  # pragma: no cover
+        cls: type[Self],
+        session: AsyncSession,
+        *,
+        pagination_type: Literal[PaginationType.OFFSET],
+        filters: list[Any] | None = ...,
+        joins: JoinType | None = ...,
+        outer_join: bool = ...,
+        load_options: Sequence[ExecutableOption] | None = ...,
+        order_by: OrderByClause | None = ...,
+        page: int = ...,
+        cursor: str | None = ...,
+        items_per_page: int = ...,
+        search: str | SearchConfig | None = ...,
+        search_fields: Sequence[SearchFieldType] | None = ...,
+        facet_fields: Sequence[FacetFieldType] | None = ...,
+        filter_by: dict[str, Any] | BaseModel | None = ...,
+        schema: type[BaseModel],
+    ) -> OffsetPaginatedResponse[Any]: ...
+
+    @overload
+    @classmethod
+    async def paginate(  # pragma: no cover
+        cls: type[Self],
+        session: AsyncSession,
+        *,
+        pagination_type: Literal[PaginationType.CURSOR],
+        filters: list[Any] | None = ...,
+        joins: JoinType | None = ...,
+        outer_join: bool = ...,
+        load_options: Sequence[ExecutableOption] | None = ...,
+        order_by: OrderByClause | None = ...,
+        page: int = ...,
+        cursor: str | None = ...,
+        items_per_page: int = ...,
+        search: str | SearchConfig | None = ...,
+        search_fields: Sequence[SearchFieldType] | None = ...,
+        facet_fields: Sequence[FacetFieldType] | None = ...,
+        filter_by: dict[str, Any] | BaseModel | None = ...,
+        schema: type[BaseModel],
+    ) -> CursorPaginatedResponse[Any]: ...
+
+    @classmethod
+    async def paginate(
+        cls: type[Self],
+        session: AsyncSession,
+        *,
+        pagination_type: PaginationType = PaginationType.OFFSET,
+        filters: list[Any] | None = None,
+        joins: JoinType | None = None,
+        outer_join: bool = False,
+        load_options: Sequence[ExecutableOption] | None = None,
+        order_by: OrderByClause | None = None,
+        page: int = 1,
+        cursor: str | None = None,
+        items_per_page: int = 20,
+        search: str | SearchConfig | None = None,
+        search_fields: Sequence[SearchFieldType] | None = None,
+        facet_fields: Sequence[FacetFieldType] | None = None,
+        filter_by: dict[str, Any] | BaseModel | None = None,
+        schema: type[BaseModel],
+    ) -> OffsetPaginatedResponse[Any] | CursorPaginatedResponse[Any]:
+        """Get paginated results using either offset or cursor pagination.
+
+        Args:
+            session: DB async session.
+            pagination_type: Pagination strategy.  Defaults to
+                ``PaginationType.OFFSET``.
+            filters: List of SQLAlchemy filter conditions.
+            joins: List of ``(model, condition)`` tuples for joining related
+                tables.
+            outer_join: Use LEFT OUTER JOIN instead of INNER JOIN.
+            load_options: SQLAlchemy loader options.  Falls back to
+                ``default_load_options`` when not provided.
+            order_by: Column or expression to order results by.
+            page: Page number (1-indexed).  Only used when
+                ``pagination_type`` is ``OFFSET``.
+            cursor: Cursor token from a previous
+                :class:`.CursorPaginatedResponse`.  Only used when
+                ``pagination_type`` is ``CURSOR``.
+            items_per_page: Number of items per page (default 20).
+            search: Search query string or :class:`.SearchConfig` object.
+            search_fields: Fields to search in (overrides class default).
+            facet_fields: Columns to compute distinct values for (overrides
+                class default).
+            filter_by: Dict of ``{column_key: value}`` to filter by declared
+                facet fields.  Keys must match the ``column.key`` of a facet
+                field.  Scalar → equality, list → IN clause.  Raises
+                :exc:`.InvalidFacetFilterError` for unknown keys.
+            schema: Pydantic schema to serialize each item into.
+
+        Returns:
+            :class:`.OffsetPaginatedResponse` when ``pagination_type`` is
+            ``OFFSET``, :class:`.CursorPaginatedResponse` when it is
+            ``CURSOR``.
+        """
+        if items_per_page < 1:
+            raise ValueError(f"items_per_page must be >= 1, got {items_per_page}")
+        match pagination_type:
+            case PaginationType.CURSOR:
+                return await cls.cursor_paginate(
+                    session,
+                    cursor=cursor,
+                    filters=filters,
+                    joins=joins,
+                    outer_join=outer_join,
+                    load_options=load_options,
+                    order_by=order_by,
+                    items_per_page=items_per_page,
+                    search=search,
+                    search_fields=search_fields,
+                    facet_fields=facet_fields,
+                    filter_by=filter_by,
+                    schema=schema,
+                )
+            case PaginationType.OFFSET:
+                if page < 1:
+                    raise ValueError(f"page must be >= 1, got {page}")
+                return await cls.offset_paginate(
+                    session,
+                    filters=filters,
+                    joins=joins,
+                    outer_join=outer_join,
+                    load_options=load_options,
+                    order_by=order_by,
+                    page=page,
+                    items_per_page=items_per_page,
+                    search=search,
+                    search_fields=search_fields,
+                    facet_fields=facet_fields,
+                    filter_by=filter_by,
+                    schema=schema,
+                )
+            case _:
+                raise ValueError(f"Unknown pagination_type: {pagination_type!r}")
+
 
 def CrudFactory(
     model: type[ModelType],

src/fastapi_toolsets/models.py

@@ -3,11 +3,12 @@
 import uuid
 from datetime import datetime
 
-from sqlalchemy import DateTime, Uuid, func, text
+from sqlalchemy import DateTime, Uuid, text
 from sqlalchemy.orm import Mapped, mapped_column
 
 __all__ = [
     "UUIDMixin",
+    "UUIDv7Mixin",
     "CreatedAtMixin",
     "UpdatedAtMixin",
     "TimestampMixin",
@@ -24,12 +25,22 @@ class UUIDMixin:
     )
 
 
+class UUIDv7Mixin:
+    """Mixin that adds a UUIDv7 primary key auto-generated by the database."""
+
+    id: Mapped[uuid.UUID] = mapped_column(
+        Uuid,
+        primary_key=True,
+        server_default=text("uuidv7()"),
+    )
+
+
 class CreatedAtMixin:
     """Mixin that adds a ``created_at`` timestamp column."""
 
     created_at: Mapped[datetime] = mapped_column(
         DateTime(timezone=True),
-        server_default=func.now(),
+        server_default=text("clock_timestamp()"),
     )
 
 
@@ -38,8 +49,8 @@ class UpdatedAtMixin:
 
     updated_at: Mapped[datetime] = mapped_column(
         DateTime(timezone=True),
-        server_default=func.now(),
-        onupdate=func.now(),
+        server_default=text("clock_timestamp()"),
+        onupdate=text("clock_timestamp()"),
     )
 
 

src/fastapi_toolsets/schemas.py

@@ -1,7 +1,7 @@
 """Base Pydantic schemas for API responses."""
 
 from enum import Enum
-from typing import Any, ClassVar, Generic
+from typing import Any, ClassVar, Generic, Literal
 
 from pydantic import BaseModel, ConfigDict
 
@@ -10,9 +10,12 @@ from .types import DataT
 __all__ = [
     "ApiError",
     "CursorPagination",
+    "CursorPaginatedResponse",
     "ErrorResponse",
     "OffsetPagination",
+    "OffsetPaginatedResponse",
     "PaginatedResponse",
+    "PaginationType",
     "PydanticBase",
     "Response",
     "ResponseStatus",
@@ -123,9 +126,48 @@ class CursorPagination(PydanticBase):
     has_more: bool
 
 
+class PaginationType(str, Enum):
+    """Pagination strategy selector for :meth:`.AsyncCrud.paginate`."""
+
+    OFFSET = "offset"
+    CURSOR = "cursor"
+
+
 class PaginatedResponse(BaseResponse, Generic[DataT]):
-    """Paginated API response for list endpoints."""
+    """Paginated API response for list endpoints.
+
+    Base class and return type for endpoints that support both pagination
+    strategies.  Use :class:`OffsetPaginatedResponse` or
+    :class:`CursorPaginatedResponse` when the strategy is fixed;  use
+    ``PaginatedResponse`` as the return annotation for unified endpoints that
+    dispatch via :meth:`~fastapi_toolsets.crud.factory.AsyncCrud.paginate`.
+    """
 
     data: list[DataT]
     pagination: OffsetPagination | CursorPagination
+    pagination_type: PaginationType | None = None
     filter_attributes: dict[str, list[Any]] | None = None
+
+
+class OffsetPaginatedResponse(PaginatedResponse[DataT]):
+    """Paginated response with typed offset-based pagination metadata.
+
+    The ``pagination_type`` field is always ``"offset"`` and acts as a
+    discriminator, allowing frontend clients to narrow the union type returned
+    by a unified ``paginate()`` endpoint.
+    """
+
+    pagination: OffsetPagination
+    pagination_type: Literal[PaginationType.OFFSET] = PaginationType.OFFSET
+
+
+class CursorPaginatedResponse(PaginatedResponse[DataT]):
+    """Paginated response with typed cursor-based pagination metadata.
+
+    The ``pagination_type`` field is always ``"cursor"`` and acts as a
+    discriminator, allowing frontend clients to narrow the union type returned
+    by a unified ``paginate()`` endpoint.
+    """
+
+    pagination: CursorPagination
+    pagination_type: Literal[PaginationType.CURSOR] = PaginationType.CURSOR

tests/test_crud.py

@@ -6,7 +6,7 @@ import pytest
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import selectinload
 
-from fastapi_toolsets.crud import CrudFactory
+from fastapi_toolsets.crud import CrudFactory, PaginationType
 from fastapi_toolsets.crud.factory import AsyncCrud
 from fastapi_toolsets.exceptions import NotFoundError
 
@@ -1969,11 +1969,8 @@ class TestCursorPaginatePrevCursor:
         assert page2.pagination.prev_cursor is not None
 
     @pytest.mark.anyio
-    async def test_prev_cursor_points_to_first_item(self, db_session: AsyncSession):
-        """prev_cursor encodes the value of the first item on the current page."""
-        import base64
-        import json
-
+    async def test_prev_cursor_navigates_back(self, db_session: AsyncSession):
+        """prev_cursor on page 2 navigates back to the same items as page 1."""
         for i in range(10):
             await RoleCrud.create(db_session, RoleCreate(name=f"role{i:02d}"))
 
@@ -1992,12 +1989,83 @@ class TestCursorPaginatePrevCursor:
         assert isinstance(page2.pagination, CursorPagination)
         assert page2.pagination.prev_cursor is not None
 
-        # Decode prev_cursor and compare to first item's id
-        decoded = json.loads(
-            base64.b64decode(page2.pagination.prev_cursor.encode()).decode()
+        # Using prev_cursor should return the same items as page 1
+        back_to_page1 = await RoleCursorCrud.cursor_paginate(
+            db_session,
+            cursor=page2.pagination.prev_cursor,
+            items_per_page=5,
+            schema=RoleRead,
         )
-        first_item_id = str(page2.data[0].id)
-        assert decoded == first_item_id
+        assert isinstance(back_to_page1.pagination, CursorPagination)
+        assert [r.id for r in back_to_page1.data] == [r.id for r in page1.data]
+        assert back_to_page1.pagination.prev_cursor is None
+
+    @pytest.mark.anyio
+    async def test_prev_cursor_empty_result_when_no_items_before(
+        self, db_session: AsyncSession
+    ):
+        """Going backward past the first item returns an empty page."""
+        from fastapi_toolsets.crud.factory import _encode_cursor
+        from fastapi_toolsets.schemas import CursorPagination
+
+        await IntRoleCursorCrud.create(db_session, IntRoleCreate(name="role00"))
+
+        page1 = await IntRoleCursorCrud.cursor_paginate(
+            db_session, items_per_page=5, schema=IntRoleRead
+        )
+        assert isinstance(page1.pagination, CursorPagination)
+
+        # Manually craft a backward cursor before any existing id
+        before_all = _encode_cursor(0, direction="prev")
+        empty = await IntRoleCursorCrud.cursor_paginate(
+            db_session, cursor=before_all, items_per_page=5, schema=IntRoleRead
+        )
+
+        assert isinstance(empty.pagination, CursorPagination)
+        assert empty.data == []
+        assert empty.pagination.next_cursor is None
+        assert empty.pagination.prev_cursor is None
+
+    @pytest.mark.anyio
+    async def test_prev_cursor_set_when_more_pages_behind(
+        self, db_session: AsyncSession
+    ):
+        """Going backward on page 2 (of 3) still exposes a prev_cursor for page 1."""
+        for i in range(9):
+            await RoleCrud.create(db_session, RoleCreate(name=f"role{i:02d}"))
+
+        from fastapi_toolsets.schemas import CursorPagination
+
+        page1 = await RoleCursorCrud.cursor_paginate(
+            db_session, items_per_page=3, schema=RoleRead
+        )
+        assert isinstance(page1.pagination, CursorPagination)
+        page2 = await RoleCursorCrud.cursor_paginate(
+            db_session,
+            cursor=page1.pagination.next_cursor,
+            items_per_page=3,
+            schema=RoleRead,
+        )
+        assert isinstance(page2.pagination, CursorPagination)
+        page3 = await RoleCursorCrud.cursor_paginate(
+            db_session,
+            cursor=page2.pagination.next_cursor,
+            items_per_page=3,
+            schema=RoleRead,
+        )
+        assert isinstance(page3.pagination, CursorPagination)
+        assert page3.pagination.prev_cursor is not None
+
+        # Going back to page 2 should still have a prev_cursor pointing at page 1
+        back_to_page2 = await RoleCursorCrud.cursor_paginate(
+            db_session,
+            cursor=page3.pagination.prev_cursor,
+            items_per_page=3,
+            schema=RoleRead,
+        )
+        assert isinstance(back_to_page2.pagination, CursorPagination)
+        assert [r.id for r in back_to_page2.data] == [r.id for r in page2.data]
+        assert back_to_page2.pagination.prev_cursor is not None
 
 
 class TestCursorPaginateWithSearch:
@@ -2384,3 +2452,72 @@ class TestCursorPaginateColumnTypes:
         page1_ids = {p.id for p in page1.data}
         page2_ids = {p.id for p in page2.data}
         assert page1_ids.isdisjoint(page2_ids)
+
+
+class TestPaginate:
+    """Tests for the unified paginate() method."""
+
+    @pytest.mark.anyio
+    async def test_offset_pagination(self, db_session: AsyncSession):
+        """paginate() with OFFSET returns OffsetPaginatedResponse."""
+        from fastapi_toolsets.schemas import OffsetPagination
+
+        await RoleCrud.create(db_session, RoleCreate(name="admin"))
+        await RoleCrud.create(db_session, RoleCreate(name="user"))
+
+        result = await RoleCrud.paginate(
+            db_session,
+            pagination_type=PaginationType.OFFSET,
+            schema=RoleRead,
+        )
+
+        assert isinstance(result.pagination, OffsetPagination)
+        assert result.pagination_type == PaginationType.OFFSET
+
+    @pytest.mark.anyio
+    async def test_cursor_pagination(self, db_session: AsyncSession):
+        """paginate() with CURSOR returns CursorPaginatedResponse."""
+        from fastapi_toolsets.schemas import CursorPagination
+
+        await RoleCursorCrud.create(db_session, RoleCreate(name="admin"))
+
+        result = await RoleCursorCrud.paginate(
+            db_session,
+            pagination_type=PaginationType.CURSOR,
+            schema=RoleRead,
+        )
+
+        assert isinstance(result.pagination, CursorPagination)
+        assert result.pagination_type == PaginationType.CURSOR
+
+    @pytest.mark.anyio
+    async def test_invalid_items_per_page_raises(self, db_session: AsyncSession):
+        """paginate() raises ValueError when items_per_page < 1."""
+        with pytest.raises(ValueError, match="items_per_page"):
+            await RoleCrud.paginate(
+                db_session,
+                pagination_type=PaginationType.OFFSET,
+                items_per_page=0,
+                schema=RoleRead,
+            )
+
+    @pytest.mark.anyio
+    async def test_invalid_page_raises(self, db_session: AsyncSession):
+        """paginate() raises ValueError when page < 1 for offset pagination."""
+        with pytest.raises(ValueError, match="page"):
+            await RoleCrud.paginate(
+                db_session,
+                pagination_type=PaginationType.OFFSET,
+                page=0,
+                schema=RoleRead,
+            )
+
+    @pytest.mark.anyio
+    async def test_unknown_pagination_type_raises(self, db_session: AsyncSession):
+        """paginate() raises ValueError for unknown pagination_type."""
+        with pytest.raises(ValueError, match="Unknown pagination_type"):
+            await RoleCrud.paginate(
+                db_session,
+                pagination_type="unknown",
+                schema=RoleRead,
+            )  # type: ignore[no-matching-overload]

tests/test_example_pagination_search.py

@@ -393,3 +393,105 @@ class TestCursorSorting:
         body = resp.json()
         assert body["error_code"] == "SORT-422"
         assert body["status"] == "FAIL"
+
+
+class TestPaginateUnified:
+    """Tests for the unified GET /articles/ endpoint using paginate()."""
+
+    @pytest.mark.anyio
+    async def test_defaults_to_offset_pagination(
+        self, client: AsyncClient, ex_db_session
+    ):
+        """Without pagination_type, defaults to offset pagination."""
+        await seed(ex_db_session)
+
+        resp = await client.get("/articles/")
+
+        assert resp.status_code == 200
+        body = resp.json()
+        assert body["pagination_type"] == "offset"
+        assert "total_count" in body["pagination"]
+        assert body["pagination"]["total_count"] == 3
+
+    @pytest.mark.anyio
+    async def test_explicit_offset_pagination(self, client: AsyncClient, ex_db_session):
+        """pagination_type=offset returns OffsetPagination metadata."""
+        await seed(ex_db_session)
+
+        resp = await client.get(
+            "/articles/?pagination_type=offset&page=1&items_per_page=2"
+        )
+
+        assert resp.status_code == 200
+        body = resp.json()
+        assert body["pagination_type"] == "offset"
+        assert body["pagination"]["total_count"] == 3
+        assert body["pagination"]["page"] == 1
+        assert body["pagination"]["has_more"] is True
+        assert len(body["data"]) == 2
+
+    @pytest.mark.anyio
+    async def test_cursor_pagination_type(self, client: AsyncClient, ex_db_session):
+        """pagination_type=cursor returns CursorPagination metadata."""
+        await seed(ex_db_session)
+
+        resp = await client.get("/articles/?pagination_type=cursor&items_per_page=2")
+
+        assert resp.status_code == 200
+        body = resp.json()
+        assert body["pagination_type"] == "cursor"
+        assert "next_cursor" in body["pagination"]
+        assert "total_count" not in body["pagination"]
+        assert body["pagination"]["has_more"] is True
+        assert len(body["data"]) == 2
+
+    @pytest.mark.anyio
+    async def test_cursor_pagination_navigate_pages(
+        self, client: AsyncClient, ex_db_session
+    ):
+        """Cursor from first page can be used to fetch the next page."""
+        await seed(ex_db_session)
+
+        first = await client.get("/articles/?pagination_type=cursor&items_per_page=2")
+        assert first.status_code == 200
+        first_body = first.json()
+        next_cursor = first_body["pagination"]["next_cursor"]
+        assert next_cursor is not None
+
+        second = await client.get(
+            f"/articles/?pagination_type=cursor&items_per_page=2&cursor={next_cursor}"
+        )
+        assert second.status_code == 200
+        second_body = second.json()
+        assert second_body["pagination_type"] == "cursor"
+        assert second_body["pagination"]["has_more"] is False
+        assert len(second_body["data"]) == 1
+
+    @pytest.mark.anyio
+    async def test_cursor_pagination_with_search(
+        self, client: AsyncClient, ex_db_session
+    ):
+        """paginate() with cursor type respects search parameter."""
+        await seed(ex_db_session)
+
+        resp = await client.get("/articles/?pagination_type=cursor&search=fastapi")
+
+        assert resp.status_code == 200
+        body = resp.json()
+        assert body["pagination_type"] == "cursor"
+        assert len(body["data"]) == 1
+        assert body["data"][0]["title"] == "FastAPI tips"
+
+    @pytest.mark.anyio
+    async def test_offset_pagination_with_filter(
+        self, client: AsyncClient, ex_db_session
+    ):
+        """paginate() with offset type respects filter_by parameter."""
+        await seed(ex_db_session)
+
+        resp = await client.get("/articles/?pagination_type=offset&status=published")
+
+        assert resp.status_code == 200
+        body = resp.json()
+        assert body["pagination_type"] == "offset"
+        assert body["pagination"]["total_count"] == 2

tests/test_models.py

@@ -11,6 +11,7 @@ from fastapi_toolsets.models import (
     CreatedAtMixin,
     TimestampMixin,
     UUIDMixin,
+    UUIDv7Mixin,
     UpdatedAtMixin,
 )
 
@@ -48,6 +49,12 @@ class TimestampModel(MixinBase, TimestampMixin):
     name: Mapped[str] = mapped_column(String(50))
 
 
+class UUIDv7Model(MixinBase, UUIDv7Mixin):
+    __tablename__ = "mixin_uuidv7_models"
+
+    name: Mapped[str] = mapped_column(String(50))
+
+
 class FullMixinModel(MixinBase, UUIDMixin, UpdatedAtMixin):
     __tablename__ = "mixin_full_models"
 
@@ -233,6 +240,50 @@ class TestTimestampMixin:
         assert "updated_at" in col_names
 
 
+class TestUUIDv7Mixin:
+    @pytest.mark.anyio
+    async def test_uuid7_generated_by_db(self, mixin_session):
+        """UUIDv7 is generated server-side and populated after flush."""
+        obj = UUIDv7Model(name="test")
+        mixin_session.add(obj)
+        await mixin_session.flush()
+
+        assert obj.id is not None
+        assert isinstance(obj.id, uuid.UUID)
+
+    @pytest.mark.anyio
+    async def test_uuid7_is_primary_key(self):
+        """UUIDv7Mixin adds id as primary key column."""
+        pk_cols = [c.name for c in UUIDv7Model.__table__.primary_key]
+        assert pk_cols == ["id"]
+
+    @pytest.mark.anyio
+    async def test_each_row_gets_unique_uuid7(self, mixin_session):
+        """Each inserted row gets a distinct UUIDv7."""
+        a = UUIDv7Model(name="a")
+        b = UUIDv7Model(name="b")
+        mixin_session.add_all([a, b])
+        await mixin_session.flush()
+
+        assert a.id != b.id
+
+    @pytest.mark.anyio
+    async def test_uuid7_version(self, mixin_session):
+        """Generated UUIDs have version 7."""
+        obj = UUIDv7Model(name="test")
+        mixin_session.add(obj)
+        await mixin_session.flush()
+
+        assert obj.id.version == 7
+
+    @pytest.mark.anyio
+    async def test_uuid7_server_default_set(self):
+        """Column has uuidv7() as server default."""
+        col = UUIDv7Model.__table__.c["id"]
+        assert col.server_default is not None
+        assert "uuidv7" in str(col.server_default.arg)
+
+
 class TestFullMixinModel:
     @pytest.mark.anyio
     async def test_combined_mixins_work_together(self, mixin_session):

tests/test_schemas.py

@@ -6,9 +6,12 @@ from pydantic import ValidationError
 from fastapi_toolsets.schemas import (
     ApiError,
     CursorPagination,
+    CursorPaginatedResponse,
     ErrorResponse,
     OffsetPagination,
+    OffsetPaginatedResponse,
     PaginatedResponse,
+    PaginationType,
     Response,
     ResponseStatus,
 )
@@ -312,11 +315,6 @@ class TestPaginatedResponse:
 
     def test_generic_type_hint(self):
         """PaginatedResponse supports generic type hints."""
-
-        class UserOut:
-            id: int
-            name: str
-
         pagination = OffsetPagination(
             total_count=1,
             items_per_page=10,
@@ -371,6 +369,191 @@ class TestPaginatedResponse:
         assert isinstance(response.pagination, CursorPagination)
 
 
+class TestPaginationType:
+    """Tests for PaginationType enum."""
+
+    def test_offset_value(self):
+        """OFFSET has string value 'offset'."""
+        assert PaginationType.OFFSET == "offset"
+        assert PaginationType.OFFSET.value == "offset"
+
+    def test_cursor_value(self):
+        """CURSOR has string value 'cursor'."""
+        assert PaginationType.CURSOR == "cursor"
+        assert PaginationType.CURSOR.value == "cursor"
+
+    def test_is_string_enum(self):
+        """PaginationType is a string enum."""
+        assert isinstance(PaginationType.OFFSET, str)
+        assert isinstance(PaginationType.CURSOR, str)
+
+    def test_members(self):
+        """PaginationType has exactly two members."""
+        assert set(PaginationType) == {PaginationType.OFFSET, PaginationType.CURSOR}
+
+
+class TestOffsetPaginatedResponse:
+    """Tests for OffsetPaginatedResponse schema."""
+
+    def test_pagination_type_is_offset(self):
+        """pagination_type is always PaginationType.OFFSET."""
+        response = OffsetPaginatedResponse(
+            data=[],
+            pagination=OffsetPagination(
+                total_count=0, items_per_page=10, page=1, has_more=False
+            ),
+        )
+        assert response.pagination_type is PaginationType.OFFSET
+
+    def test_pagination_type_serializes_to_string(self):
+        """pagination_type serializes to 'offset' in JSON mode."""
+        response = OffsetPaginatedResponse(
+            data=[],
+            pagination=OffsetPagination(
+                total_count=0, items_per_page=10, page=1, has_more=False
+            ),
+        )
+        assert response.model_dump(mode="json")["pagination_type"] == "offset"
+
+    def test_pagination_field_is_typed(self):
+        """pagination field is OffsetPagination, not the union."""
+        response = OffsetPaginatedResponse(
+            data=[{"id": 1}],
+            pagination=OffsetPagination(
+                total_count=10, items_per_page=5, page=2, has_more=True
+            ),
+        )
+        assert isinstance(response.pagination, OffsetPagination)
+        assert response.pagination.total_count == 10
+        assert response.pagination.page == 2
+
+    def test_is_subclass_of_paginated_response(self):
+        """OffsetPaginatedResponse IS a PaginatedResponse."""
+        response = OffsetPaginatedResponse(
+            data=[],
+            pagination=OffsetPagination(
+                total_count=0, items_per_page=10, page=1, has_more=False
+            ),
+        )
+        assert isinstance(response, PaginatedResponse)
+
+    def test_pagination_type_default_cannot_be_overridden_to_cursor(self):
+        """pagination_type rejects values other than OFFSET."""
+        with pytest.raises(ValidationError):
+            OffsetPaginatedResponse(
+                data=[],
+                pagination=OffsetPagination(
+                    total_count=0, items_per_page=10, page=1, has_more=False
+                ),
+                pagination_type=PaginationType.CURSOR,  # type: ignore[arg-type]
+            )
+
+    def test_filter_attributes_defaults_to_none(self):
+        """filter_attributes defaults to None."""
+        response = OffsetPaginatedResponse(
+            data=[],
+            pagination=OffsetPagination(
+                total_count=0, items_per_page=10, page=1, has_more=False
+            ),
+        )
+        assert response.filter_attributes is None
+
+    def test_full_serialization(self):
+        """Full JSON serialization includes all expected fields."""
+        response = OffsetPaginatedResponse(
+            data=[{"id": 1}],
+            pagination=OffsetPagination(
+                total_count=1, items_per_page=10, page=1, has_more=False
+            ),
+            filter_attributes={"status": ["active"]},
+        )
+        data = response.model_dump(mode="json")
+
+        assert data["pagination_type"] == "offset"
+        assert data["status"] == "SUCCESS"
+        assert data["data"] == [{"id": 1}]
+        assert data["pagination"]["total_count"] == 1
+        assert data["filter_attributes"] == {"status": ["active"]}
+
+
+class TestCursorPaginatedResponse:
+    """Tests for CursorPaginatedResponse schema."""
+
+    def test_pagination_type_is_cursor(self):
+        """pagination_type is always PaginationType.CURSOR."""
+        response = CursorPaginatedResponse(
+            data=[],
+            pagination=CursorPagination(
+                next_cursor=None, items_per_page=10, has_more=False
+            ),
+        )
+        assert response.pagination_type is PaginationType.CURSOR
+
+    def test_pagination_type_serializes_to_string(self):
+        """pagination_type serializes to 'cursor' in JSON mode."""
+        response = CursorPaginatedResponse(
+            data=[],
+            pagination=CursorPagination(
+                next_cursor=None, items_per_page=10, has_more=False
+            ),
+        )
+        assert response.model_dump(mode="json")["pagination_type"] == "cursor"
+
+    def test_pagination_field_is_typed(self):
+        """pagination field is CursorPagination, not the union."""
+        response = CursorPaginatedResponse(
+            data=[{"id": 1}],
+            pagination=CursorPagination(
+                next_cursor="abc123",
+                prev_cursor=None,
+                items_per_page=20,
+                has_more=True,
+            ),
+        )
+        assert isinstance(response.pagination, CursorPagination)
+        assert response.pagination.next_cursor == "abc123"
+        assert response.pagination.has_more is True
+
+    def test_is_subclass_of_paginated_response(self):
+        """CursorPaginatedResponse IS a PaginatedResponse."""
+        response = CursorPaginatedResponse(
+            data=[],
+            pagination=CursorPagination(
+                next_cursor=None, items_per_page=10, has_more=False
+            ),
+        )
+        assert isinstance(response, PaginatedResponse)
+
+    def test_pagination_type_default_cannot_be_overridden_to_offset(self):
+        """pagination_type rejects values other than CURSOR."""
+        with pytest.raises(ValidationError):
+            CursorPaginatedResponse(
+                data=[],
+                pagination=CursorPagination(
+                    next_cursor=None, items_per_page=10, has_more=False
+                ),
+                pagination_type=PaginationType.OFFSET,  # type: ignore[arg-type]
+            )
+
+    def test_full_serialization(self):
+        """Full JSON serialization includes all expected fields."""
+        response = CursorPaginatedResponse(
+            data=[{"id": 1}],
+            pagination=CursorPagination(
+                next_cursor="tok_next",
+                prev_cursor="tok_prev",
+                items_per_page=10,
+                has_more=True,
+            ),
+        )
+        data = response.model_dump(mode="json")
+
+        assert data["pagination_type"] == "cursor"
+        assert data["status"] == "SUCCESS"
+        assert data["pagination"]["next_cursor"] == "tok_next"
+        assert data["pagination"]["prev_cursor"] == "tok_prev"
+
+
 class TestFromAttributes:
     """Tests for from_attributes config (ORM mode)."""