Django Rest framework认证组件详细用法

REST_FRAMEWORK = {
  # 配置全局认证
  'DEFAULT_AUTHENTICATION_CLASSES': ["blog.auth.MyAuth", ],
}

# models.py
from django.db import models

class UserInfo(models.Model):
  name = models.CharField(max_length=32)
  pwd = models.CharField(max_length=32)
  token = models.UUIDField(null=True, blank=True)

mysql> select * from blog_userinfo;
+----+-----------+-----------+-------+
| id | name   | pwd    | token |
+----+-----------+-----------+-------+
| 1 | 花千骨  | huaqiangu |    |
+----+-----------+-----------+-------+
1 row in set (0.00 sec)

from rest_framework.authentication import BaseAuthentication # > 导入认证类
from rest_framework.exceptions import AuthenticationFailed # 用于抛出错误信息
from .models import UserInfo # 导入用户信息表


class MyAuth(BaseAuthentication):
  def authenticate(self, request):
    """自定义的认证类中必须有此方法以及如下的判断和两个返回值"""

    # 1. 获取token
    token = request.query_params.get('token')

    # 2. 判断是否成功获取token
    if not token:
      raise AuthenticationFailed("缺少token")

    # 3. 判断token是否合法
    try:
      user_obj = UserInfo.objects.filter(token=token).first()
    except Exception:
      raise AuthenticationFailed("token不合法")

    # 4. 判断token在数据库中是否存在
    if not user_obj:
      raise AuthenticationFailed("token不存在")

    # 5. 认证通过
    return (user_obj.name, user_obj)
    # 注意，权限组件会用到这两个返回值

from django.conf.urls import url
from blog.views import LoginView, TestAuthView

urlpatterns = [
  url(r'^login/$', LoginView.as_view()), # 用于登陆
  url(r'^test/$', TestAuthView.as_view()), # 用于认证测试
]

from rest_framework.views import APIView
from rest_framework.response import Response
from .auth import MyAuth # 导入自定义的认证组件
from .models import UserInfo # 导入用户信息表
import uuid # 用于生成uuid


class LoginView(APIView):
  """用于登陆验证并生成UUID的视图"""

  def post(self, request):
    name = request.data.get('name')
    pwd = request.data.get('pwd')
    user_obj = UserInfo.objects.filter(name=name, pwd=pwd).first()
    if user_obj:
      u4 = uuid.uuid4() # 生成uuid4
      user_obj.token = u4
      user_obj.save()
      return Response(u4)
    return Response("用户名或密码错误")


class TestAuthView(APIView):
  """用于认证测试的视图"""
  
  # 在视图中增加此配置，即表明此视图要走认证逻辑认证
  # 认证组件可以写多个
  authentication_classes = [MyAuth, ]

  def get(self, request):
    return Response("认证测试")