django rest framework 获取前端参数的几种方

方式一 常用到GET请求（params）

@url http://example.com/orders?name='shubiao'&color='red'

这种是通过url传参（params），那么应该使用：

from rest_framework.views import APIView
from django.http import JsonResponse

class LoginView(APIView):
    ret = {'code': 1000, 'msg': 'GET'}
    def get(self, request, *args, **kwargs):
          name = request.query_params.dict().name
          # name = 'shubiao'
          color = request.query_params.dict().color
          # color = 'red'
          return JsonResponse(ret)

request.query_params拿到的是QueryDict的类型，使用dict()方法转化为dict

注意：此处可以使用dict()方法，但不要盲目使用dict(), 大家不妨试试{username: ['zhangning', 'ermeng'], age: 18}.dict(), 遇到这种的QueryDict的时候，你可能就会特别特别的开心。一定要试试，一定要试试， 一定要试试！只有试了才能记得住！

方式二 常用到POST请求

1. formdata

image.png

from rest_framework.views import APIView
from django.http import JsonResponse

class LoginView(APIView):
    def post(self, request, *args, **kwargs):
          ret = {'code': 1000, 'msg': None}
          usernames = request.data.getlist('username')
          # usernames = ['zhangning', 'hello'] (list)
          color = request.data.get('color')
          # color = 'red'
          username = request.data.get('username')
          # username = 'hello'
          return JsonResponse(ret)

image.png

request.data拿到的参数是QueryDict的类型，此处只讲获取，QueryDict类包含了很多方法，具体的可以参考：https://www.cnblogs.com/scolia/p/5634591.html

2. application/json

image.png

from rest_framework.views import APIView
from django.http import JsonResponse

class LoginView(APIView):
    def post(self, request, slug=None, *args, **kwargs):
        ret = {'code': 1000, 'msg': None}
        username = request.data.get('username')
        # username = 'xiaoming'
        age= request.data.get('age')
        # age = 18 (number)
        languages= request.data.get('languages')
        # languages = ['js', 'node', 'python'] (list)
        return JsonResponse(ret)

request.data 拿到是Dict类型

3. application/x-www-form-urlencoded

image.png

from rest_framework.views import APIView
from django.http import JsonResponse

class LoginView(APIView):
    def post(self, request, slug=None, *args, **kwargs):
        ret = {'code': 1000, 'msg': None}
        username = request.data.get('username')
        # username = 'lin'
        age= request.data.get('age')
        # age = 18 (number)
        return JsonResponse(ret)

request.data 拿到的也是QueryDict类型，获取方法可以参考https://www.cnblogs.com/scolia/p/5634591.html链接

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注意：
此处都是基于继承 rest framework 中APIView的类重新封装的request来获取参数喔！