drf framework in all views and usage

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drf framework in all views and usage

A frame all .drf view class

from django.views import View

from rest_framework import views, generics, mixins, viewsets

• 最基础: Django comes with views like

• drf框架中最基础的视图类:views.APIView

• drf框架中工具视图:generics
  • GenericAPIView: base view class of the class
• mixins view toolset:
  • RetrieveModelMixin：retrieve 单取
  • ListModelMixin：list 群取
  • CreateModelMixin: create monocytogenes
  • UpdateModelMixin: update a single overall change
  • UpdateModelMixin: partial_update locally modified single
  • DestroyModelMixin：destroy 单删

• viewsets set of views

上述视图都是基于django自带的views进行相关方法的分装

Two .viewsets set of views

ViewSetMixin：视图集工具 - 重写as_view - 将 请求方式 映射到视图类中的 指定方法
我们在路由中 类名.as_view({'get': 'retrieve', 'delete': 'remove_obj'})
GenericViewSet：与模型类有关的接口视图集 - 可以从mixins那继承功能，也可以自定义功能
ViewSet：与模型类无关或不是标准模型类接口 - 一般都是自定义功能

Three .generics use in GenericAPIView

The serializer_class queryset and packaged as such property, there is provided a method of three

• self.get_queryset (): Gets all

• self.get_object (): Get Get The single pk

• self.get_serializer (* args, ** kwargs): Gets the specified

  Commonly used several parameters

  • data: the sequence of parameter passing for returning
  • many: acquiring a plurality of sequences of objects
  • instance: If there are save to perform the update method behind, create a method not implemented
  • partial: True to local field can modify the default is Falsechanged to all fields

An important prerequisite for the use of these methods must be

• queryset
• serializer_class
• If we want to use get_object () must send us a front-endpk

Four .mixins use

mixins, then in a method of dispensing into five generics method

• RetrieveModelMixin：retrieve 单取
• ListModelMixin：list 群取
• CreateModelMixin: create monocytogenes
• UpdateModelMixin: update a single overall change
• UpdateModelMixin: partial_update locally modified single
• DestroyModelMixin：destroy 单删

Use allself.方法名(request,*args,**kwargs)

The monosubstituted

First, we want to inherit class class class name (mixins.RetrieveModelMixin)

self.retrieve(request,*args,**kwargs)

But time and then perform these operations still give the same view with generics two parameters, and create a view class must inherit its parent class method of the class

Five .generics subclass inherits GenericAPIView use

class BookRetrieveUpdateAPIView(generics.RetrieveUpdateAPIView):
    queryset = models.Book.objects.filter(is_delete=False).order_by('-id')
    serializer_class = serializers.BookModelSerializer

In fact, the foundation again before another method of packaging

There are as many ways of looking at what is left to see the source code to source code ctrl +

Six custom view

本来get他就只会找类中get方法我们可以对其设置让他找我们对于的名称

路由层

from django.conf.urls import url
from . import views
urlpatterns = [
    url(r'^v4/books/(?P<pk>.*)/$', views.BookGenericViewSet.as_view({
        'delete': 'remove_book'
    })),
]

视图层

class BookGenericViewSet(mixins.RetrieveModelMixin, mixins.ListModelMixin, mixins.CreateModelMixin, mixins.UpdateModelMixin, viewsets.GenericViewSet):
    queryset = models.Book.objects.filter(is_delete=False).order_by('-id')
    serializer_class = serializers.BookModelSerializer

    def remove_book(self, request, *args, **kwargs):
        pk = kwargs.get('pk')
        try:
            book_obj = models.Book.objects.get(is_delete=False, pk=pk)
            book_obj.is_delete = True
            book_obj.save()
            return APIResponse(0, '删除成功')
        except:
            return APIResponse(1, '删除失败')