Django REST API ZE6B391A8D2C4D45902A23A8B658570中的ID參數

Question

我有兩個模型：

1. 文章
2. 評論

評論通過 ForeingKey 連接到文章。

我想創建一個端點，如：

       {GET} /article/97/comments  # get all comments of article (id:97)
       {POST} /article/97/comments  # create an comment for article (id=97)

但我想使用 GenericViewSet 或 ModelMixins。

你能指導我嗎，我該怎么做？

謝謝。

Answer 1

使用嵌套路由非常簡單：

定義您的文章 model ( models/article.py )：

class Article(models.Model):
    name = models.CharField(max_length=100, blank=False, null=False, default='')
    ...

定義您的評論 model ( models/comment.py )：

class Comment(models.Model):
    content = models.CharField(max_length=100, blank=False, null=False, default='')
    article = models.ForeignKey(Article, related_name='comments', on_delete=models.CASCADE, blank=True, null=True)
    ...

定義您的文章視圖（ views/article.py ）：

class ArticleAPIView(viewsets.ModelViewSet):
    serializer_class = ArticleSerializer
    ....

定義您的評論視圖（ views/comment.py ）：

class CommentAPIView(viewsets.ModelViewSet):
    serializer_class = CommentSerializer
    ...

定義您的路線（ urls.py ）：

from django.urls import path
from app.domain.api import views
from rest_framework_extensions.routers import ExtendedSimpleRouter

urlpatterns: list = []

router: ExtendedSimpleRouter = ExtendedSimpleRouter()
articles_router = router.register('articles', views.ArticleAPIView, basename='articles')
articles_router.register(
    'comments',
    views.CommentAPIView,
    basename='comments',
    parents_query_lookups=['article']
)
urlpatterns += router.urls

您將獲得以下文章的路線：

{GET} /articles/          -> Get list
{GET} /articles/{id}/     -> Get by id
{POST} /articles/         -> Create
{PUT} /articles/{id}/     -> Update
{PATCH} /articles/{id}/   -> Partial update
{DELETE} /articles/{id}/  -> Delete

最后，您將獲得以下評論的路線：

{GET} /articles/{parent_lookup_article}/comments/          -> Get list
{GET} /articles/{parent_lookup_article}/comments/{id}/     -> Get by id
{POST} /articles/{parent_lookup_article}/comments/         -> Create
{PUT} /articles/{parent_lookup_article}/comments/{id}/     -> Update
{PATCH} /articles/{parent_lookup_article}/comments/{id}/   -> Partial update
{DELETE} /articles/{parent_lookup_article}/comments/{id}/  -> Delete