利用rest framework搭建Django API过程解析

pip install djangorestframework

INSTALLED_APPS = [
  '...',
  'rest_framework',
]

REST_FRAMEWORK = {
  # Use Django's standard `django.contrib.auth` permissions,
  # or allow read-only access for unauthenticated users.
  'DEFAULT_PERMISSION_CLASSES': [
    'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
  ]
}

# models.py中有个User类，类下有'username', 'password'字段
from crm import models
from rest_framework import serializers
 
class UserSerializer(serializers.HyperlinkedModelSerializer):
  # 序列化哪个类以及其类下的字段
  class Meta:
    model = models.User # 序列化models中User类
    fields = ( 'username', 'password',) # 序列化字段，此处无外键，有外键的话需要另写对应的序列化类

from rest_framework import viewsets
from crm.rest_serializer import UserSerializer
from crm import models
class UserViewSet(viewsets.ModelViewSet):
  queryset = models.User.objects.all() # 取User表所有数据，变量名queryset固定
  serializer_class = UserSerializer  # 给UserSerializer类序列化，变量名serializer_class固定

from django.conf.urls import url,include
from rest_framework import routers
from crm.rest_views import UserViewSet
router = routers.DefaultRouter()    # 实例
router.register(r'users', UserViewSet) # 注册
urlpatterns = [
  url(r'^api/', include(router.urls)),
]