day 71 作业

总路由urls.py

from django.conf.urls import url, include
from django.contrib import admin

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^api/', include('api.urls'))
]

分发路由urls.py

from django.conf.urls import url
from django.contrib import admin
from . import views
urlpatterns = [
    # url(r'^admin/', admin.site.urls),
    url(r'^books/$', views.BookView.as_view()),
    url(r'^books/(?P<pk>d+)/$', views.BookView.as_view())
]

settings配置

# 先注册'rest_framework'

REST_FRAMEWORK = {
    'DEFAULT_RENDERER_CLASSES': [
        'rest_framework.renderers.JSONRenderer',
        'rest_framework.renderers.BrowsableAPIRenderer',
    ],

    'DEFAULT_PARSER_CLASSES': [
        'rest_framework.parsers.JSONParser',
        'rest_framework.parsers.FormParser',
        'rest_framework.parsers.MultiPartParser'
    ],

    'EXCEPTION_HANDLER': 'api.exception.exception_handler',
}

视图views.py

from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework.renderers import BrowsableAPIRenderer, JSONRenderer
from rest_framework.parsers import JSONParser, FormParser, MultiPartParser


class BookView(APIView):
    # 配置局部渲染类
    RENDERER_CLASSES = [BrowsableAPIRenderer, JSONRenderer]

    # 局部配置解析类
    PARSER_CLASSES = [JSONParser, FormParser, MultiPartParser]

    def get(self, request, *args, **kwargs):
        return Response(
            data={
                'msg': 'view get ok'
            }
        )

处理响应 服务端异常处理

# 应用下建立 exception， 重写exception_handler方法

from rest_framework.response import Response
from rest_framework.views import exception_handler as drf_exception_handler

def exception_handler(exc, context):
    response = drf_exception_handler(exc, context)
    detail = '%s - %s - %s' % (context.get('view'), context.get('request').method, exc)
    if not response:
        response = Response({'detail': detail})
    else:
        response.data = {'detail': detail}

    return response