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

from django.db import models


class UserGroup(models.Model):
    title = models.CharField(max_length=32)


class UserInfo(models.Model):
    user_type_choices = (
        (1, '普通用户'),
        (2, 'vip'),
        (3, 'svip'),
    )
    user_type = models.IntegerField(choices=user_type_choices)
    username = models.CharField(max_length=32, unique=True)
    password = models.CharField(max_length=64)
    group = models.ForeignKey('UserGroup', on_delete=models.CASCADE)
    roles = models.ManyToManyField('Role')


class UserToken(models.Model):
    user = models.OneToOneField(to='UserInfo', on_delete=models.CASCADE)
    token = models.CharField(max_length=64)


class Role(models.Model):
    title = models.CharField(max_length=32)

 路由

from django.contrib import admin
from django.urls import path, re_path, include

urlpatterns = [
    path('admin/', admin.site.urls),
    re_path('api/', include('api.urls')),
]

分发的路由

#!/usr/bin/env python
# -*- coding:utf-8 -*-

from django.urls import path, re_path, include
from api import views

urlpatterns = [
    # 渲染器
    re_path('(?P<version>[v1|v2]+)/test/$', views.TestView.as_view()),
] 

视图：

# #############################渲染器############################
from rest_framework.renderers import JSONRenderer, BrowsableAPIRenderer, AdminRenderer


class TestView(APIView):
    renderer_classes = [JSONRenderer, BrowsableAPIRenderer, AdminRenderer]

    def get(self, request, *args, **kwargs):
        roles = models.Role.objects.all()
        pg = MyCursorPagination()
        # 在数据库中获取分页的数据
        pg_roles = pg.paginate_queryset(queryset=roles, request=request, view=self)
        # 对数据序列化
        ser = PagerSerializer(instance=pg_roles, many=True)
        ret = pg.get_paginated_response(ser.data)
        return ret 

全局配置：

REST_FRAMEWORK = {
# 渲染器
    'DEFAULT_RENDERER_CLASSES': ['rest_framework.renderers.JSONRenderer', 
                                 'rest_framework.renderers.BrowsableAPIRenderer', 
                                 'rest_framework.renderers.AdminRenderer']

}