Django REST framework之渲染器组件以及阅读源码流程

选择方式渲染在页面上显示

举例说明:

表设计

 1 from django.db import models
 2 
 3 
 4 class UserGroup(models.Model):
 5     title = models.CharField(max_length=32)
 6 
 7 
 8 class UserInfo(models.Model):
 9     user_type_choices = (
10         (1, '普通用户'),
11         (2, 'vip'),
12         (3, 'svip'),
13     )
14     user_type = models.IntegerField(choices=user_type_choices)
15     username = models.CharField(max_length=32, unique=True)
16     password = models.CharField(max_length=64)
17     group = models.ForeignKey('UserGroup', on_delete=models.CASCADE)
18     roles = models.ManyToManyField('Role')
19 
20 
21 class UserToken(models.Model):
22     user = models.OneToOneField(to='UserInfo', on_delete=models.CASCADE)
23     token = models.CharField(max_length=64)
24 
25 
26 class Role(models.Model):
27     title = models.CharField(max_length=32)

 路由

1 from django.contrib import admin
2 from django.urls import path, re_path, include
3 
4 urlpatterns = [
5     path('admin/', admin.site.urls),
6     re_path('api/', include('api.urls')),
7 ]

分发的路由

 1 #!/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 
 4 from django.urls import path, re_path, include
 5 from api import views
 6 
 7 urlpatterns = [
 8     # 渲染器
 9     re_path('(?P<version>[v1|v2]+)/test/$', views.TestView.as_view()),
10 ] 

视图：

 1 # #############################渲染器############################
 2 from rest_framework.renderers import JSONRenderer, BrowsableAPIRenderer, AdminRenderer
 3 
 4 
 5 class TestView(APIView):
 6     renderer_classes = [JSONRenderer, BrowsableAPIRenderer, AdminRenderer]
 7 
 8     def get(self, request, *args, **kwargs):
 9         roles = models.Role.objects.all()
10         pg = MyCursorPagination()
11         # 在数据库中获取分页的数据
12         pg_roles = pg.paginate_queryset(queryset=roles, request=request, view=self)
13         # 对数据序列化
14         ser = PagerSerializer(instance=pg_roles, many=True)
15         ret = pg.get_paginated_response(ser.data)
16         return ret 

全局配置：

1 REST_FRAMEWORK = {
2 # 渲染器
3     'DEFAULT_RENDERER_CLASSES': ['rest_framework.renderers.JSONRenderer', 
4                                  'rest_framework.renderers.BrowsableAPIRenderer', 
5                                  'rest_framework.renderers.AdminRenderer']
6 
7 }