（生鲜项目）07. api view实现商品列表页

第一步: 环境配置

1. DRF官网: https://www.django-rest-framework.org/

仔细查看自己当前的python版本以及django版本是否支持DRF, 然后就看看哪些支持的模块还没有下载, 由于之前安装过xadmin了, 所以这里正常情况下还有coreapi, pygments, django-guardian没有安装, 在虚拟环境中去安装就行了

注: 如果在安装coreapi的时候报错, 并且提示utf-8 decode错误, 那么就去修改pip的编码格式为gbk(这个暂时放这儿, 我还没遇到过这个错误)

然后 pip uninstall MarkupSafe coreapi , 然后再重新安装

2. 配置与DRF相关的url, 与用APIview写good.view函数

from django.conf.urls import url,include
import xadmin
from MxShop.settings import MEDIA_ROOT
from django.views.static import serve
from rest_framework.documentation import include_docs_urls

from goods.views_base import GoodsListView

urlpatterns = [
       url(r'^xadmin/', xadmin.site.urls),
       url(r'^media/(?P<path>.*)$', serve, {"document_root": MEDIA_ROOT}),

       # 商品列表页
       url(r'^goods/$', GoodsListView.as_view(), name="goods-list"),

       # 生成DRF文档的配置
       url(r'^docs/', include_docs_urls(title="慕学生鲜")),
       # DRF登录配置
       url(r'^api-auth/', include('rest_framework.urls')),

]

别忘记注册

INSTALLED_APPS = [
    ...
    'rest_framework',
]

接着是goods.view

from .serializers import GoodsSerializer
from rest_framework.views import APIView
from rest_framework.response import Response

from .models import Goods

# APIview继承了View
class GoodsListView(APIView):
    """
    List all snippets, or create a new snippet.
    """

    def get(self, request, format=None):
        goods = Goods.objects.all()[:10]
        goods_serializer = GoodsSerializer(goods, many=True)  # many:是否是querrySet对象
        return Response(goods_serializer.data)

最后是 goods.serializers (serializers模块就是起到了Form表单的作用)

from rest_framework import serializers

class GoodsSerializer(serializers.Serializer):
    name = serializers.CharField(required=True, max_length=100)
    click_num = serializers.IntegerField(default=0)
    goods_front_image=serializers.ImageField()

然后配置settings

# 解决 1.11.3版本下使用APIview会报'CSRFCheck' object has no attribute 'process_request'的问题, 这么设置之后, goods的login就不会跳转
所以完美的解决办法是: https://stackoverflow.com/questions/54609495/django-csrfcheck-object-has-no-attribute-process-request
REST_FRAMEWORK = {
    "DEFAULT_AUTHENTICATION_CLASSES": []
}

最后访问网页

再验证一个goods页面的login能否使用, 我这里出了小BUG, 我登录后能够重定向回这个页面,说明账号密码验证是成功了的

但是重定向回goods页面后,这里仍然显示Log in, 而不是 admin, 看上面 解决 1.11.3版本下使用APIview会报'CSRFCheck' object has no attribute 'process_request'的问题,

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