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fastapi-toolsets/docs_src/examples/pagination_search/routes.py

103 lines
3.2 KiB
Python

from typing import Annotated
from fastapi import APIRouter, Depends, Query
from fastapi_toolsets.crud import OrderByClause, PaginationType
from fastapi_toolsets.schemas import (
CursorPaginatedResponse,
OffsetPaginatedResponse,
PaginatedResponse,
)
from .crud import ArticleCrud
from .db import SessionDep
from .models import Article
from .schemas import ArticleRead
router = APIRouter(prefix="/articles")
@router.get("/offset")
async def list_articles_offset(
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)),
],
page: int = Query(1, ge=1),
items_per_page: int = Query(20, ge=1, le=100),
search: str | None = None,
) -> OffsetPaginatedResponse[ArticleRead]:
return await ArticleCrud.offset_paginate(
session=session,
page=page,
items_per_page=items_per_page,
search=search,
filter_by=filter_by or None,
order_by=order_by,
schema=ArticleRead,
)
@router.get("/cursor")
async def list_articles_cursor(
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)),
],
cursor: str | None = None,
items_per_page: int = Query(20, ge=1, le=100),
search: str | None = None,
) -> CursorPaginatedResponse[ArticleRead]:
return await ArticleCrud.cursor_paginate(
session=session,
cursor=cursor,
items_per_page=items_per_page,
search=search,
filter_by=filter_by or None,
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, description="Current page (offset pagination only)"),
cursor: str | None = Query(
None, description="Cursor token (cursor pagination only)"
),
items_per_page: int = Query(20, ge=1, le=100),
search: str | None = None,
) -> PaginatedResponse[ArticleRead]:
"""List articles using either offset or cursor pagination.
Pass `pagination_type=offset` (default) for page-based pagination with a
total count, or `pagination_type=cursor` for efficient cursor-based
pagination suited to large datasets and infinite scroll.
- **offset**: use `page` to navigate; response includes `total_count`.
- **cursor**: use the `next_cursor` / `prev_cursor` from the previous
response as the `cursor` query parameter; no total count is returned.
"""
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,
)