Django Rest frame Work initial use >> root URL and Table Association

1. Add a table to the Models and have an external association.

 fromDjango.dbImportModelsclassPublisher (models. Model): Name= Models. Charfield (max_length=32, verbose_name="Publisher Name", unique=True) Address= Models. Charfield (max_length=128, verbose_name="Publisher Address") operator= Models. ForeignKey ("Auth. User", on_delete=models. CASCADE)def __str__(self):returnSelf.nameclassMeta:verbose_name="Table Publisher"verbose_name_plural=Verbose_name#New TableclassBook (models. Model): Title= Models. Charfield (max_length=32, verbose_name="Book Name") Publisher= Models. ForeignKey ("Publisher", on_delete=models. CASCADE)def __str__(self):returnSelf.titleclassMeta:verbose_name="Table Book"verbose_name_plural= Verbose_name

models.py

2. Serializer is adding a serialization, built-in auto-correlation. (Hyperlinkedmodelserializer)

 fromRest_frameworkImportserializers fromHelloworld.modelsImportPublisher, BookclassPublisherserializer (serializers. Modelserializer): operator= serializers. Readonlyfield (source="Operator.username")    classMeta:model=Publisher Fields= (            "ID",            "name",            "Address",            "operator"        )classBookserializer (serializers. Hyperlinkedmodelserializer):#so you don't have to redefine the column.    #publisher = serializers. Stringforrefield (* * *)    classMeta:model= book Fields= (            "ID",            "title",            "Publisher"        )

serializers.py

3. views.py add Booklist to the new table, Bookdetail view.

class Booklist (generics. Listcreateapiview):    = Book.objects.all ()    = bookserializer    = (permissions. IsAuthenticated,)class  bookdetail (generics. Retrieveupdatedestroyapiview):    = Book.objects.all ()    = Bookserializer    = (Permissions. IsAuthenticated,)

views.py

4. urls.py Add a new path

Urlpatterns =[Path ("', Views.api_root), Path ('p/', views. Publisherlist.as_view (), name="publisher-list"), Path ('p/<int:pk>/', views. Publisherdetail.as_view (), name="Publisher-detail"), Path ('b /', views. Booklist.as_view (), name='book-list'), Path ('b/<int:pk>/', views. Bookdetail.as_view (), name="Book-detail"),]

urls.py

Part 2. Add root path automatically, and slice urls.py

(1) Under the new app views, add a Api_root () method.

 fromRest_framework.reverseImportReverse fromRest_framework.decoratorsImportApi_view@api_view (["GET"])defApi_root (Request):returnResponse ({"Publisher": Reverse ('publisher-list', request=request),"Books": Reverse ("book-list", request=request)})

app/views.py

(2) Adjust the urls.py of the project and use include.

 fromDjango.contribImportAdmin fromDjango.urlsImportPath, Includeurlpatterns=[Path ('admin/', Admin.site.urls), Path ('api-auth/', Include ('Rest_framework.urls', namespace='rest_framework')), Path ('helloworld/', Include ("Helloworld.urls")),]

project/urls.py

(3) Create a urls.py in the app and write the specific path.

 fromDjango.urlsImportPath fromHelloWorldImportViewsurlpatterns=[Path ("', Views.api_root), Path ('p/', views. Publisherlist.as_view (), name="publisher-list"), Path ('p/<int:pk>/', views. Publisherdetail.as_view (), name="Publisher-detail"), Path ('b /', views. Booklist.as_view (), name='book-list'), Path ('b/<int:pk>/', views. Bookdetail.as_view (), name="Book-detail"),]

app/urls.py

Django Rest frame Work initial use >> root URL and Table Association