from django.shortcuts import render, HttpResponse
from django.http import JsonResponse

# Create your views here.


def index(request):
    if request.method == "POST":
        print(request.POST)
        # 修改数据库
        return HttpResponse("OK")
    return render(request, "index.html")

# CBV
from django import views


class Index(views.View):
    def get(self, request):
        return render(request, ‘index.html‘)

    def post(self, request):
        print(request.POST)
        return HttpResponse("OK")

# def index2(request):
#     if request.method == "GET":
#         return render(request, "index.html")
#     print(request.POST)
#     # 修改数据库
#     return JsonResponse("OK")


def ajax(request):
    return JsonResponse({"code": 0})

 1 from django import views
 2 
 3 
 4 class Index(views.View):
 5     def get(self, request):
 6         return render(request, ‘index.html‘)
 7 
 8     def post(self, request):
 9         print(request.POST)
10         return HttpResponse("OK")

 1 from django.db import models
 2 
 3 # Create your models here.
 4 
 5 
 6 # 文章表
 7 class Article(models.Model):
 8     title = models.CharField(max_length=32)
 9     # 文章发布时间
10     # auto_now每次更新的时候会把当前时间保存
11     create_time = models.DateField(auto_now_add=True)
12     # auto_now_add 第一次创建的时候把当前时间保存
13     update_time = models.DateField(auto_now=True)
14     # 文章的类型
15     type = models.SmallIntegerField(
16         choices=((1, "原创"), (2, "转载")),
17         default=1
18     )
19     # 来源
20     school = models.ForeignKey(to=‘School‘, on_delete=models.CASCADE)
21     # 标签
22     tag = models.ManyToManyField(to=‘Tag‘)
23 
24 
25 # 文章来源表
26 class School(models.Model):
27     name = models.CharField(max_length=16)
28 
29 
30 # 文章标签表
31 class Tag(models.Model):
32     name = models.CharField(max_length=16)

1 from django.contrib import admin
2 from django.urls import path
3 from app01 import views
4 
5 urlpatterns = [
6     path(‘admin/‘, admin.site.urls),
7     path(‘article_list/‘,views.article_list),
8 ]

from django.shortcuts import render,HttpResponse
from app01 import models
import json

# Create your views here.
def article_list(request):
    #去数据库查询所有的文章数据
    quest_set = models.Article.objects.all().values("id","title")  #values是字典，values_list是列表
    #序列化成json格式
    data = json.dumps(list(quest_set),ensure_ascii=False)
    #返回

    return HttpResponse(data)

 1 from django.shortcuts import render,HttpResponse
 2 from app01 import models
 3 import json
 4 
 5 # Create your views here.
 6 def article_list(request):
 7     #去数据库查询所有的文章数据
 8     quest_set = models.Article.objects.all().values("id","title","create_time")  #values是字典，values_list是列表
 9     #序列化成json格式
10 
11     #1.先把时间对象转换成字符串格式
12     for i in quest_set:
13         i["create_time"] = i["create_time"].strftime(‘%Y-%m-%d‘)
14 
15     data = json.dumps(list(quest_set), ensure_ascii=False)
16     #返回
17     return HttpResponse(data)

 1 from django.shortcuts import render,HttpResponse
 2 from django.http import JsonResponse
 3 from app01 import models
 4 import json
 5 
 6 # Create your views here.
 7 #第二种方式
 8 def article_list(request):
 9     #去数据库查询所有的文章数据，返回queryset,每一个元素都是字典
10     query_set = models.Article.objects.all().values("id","title","create_time","type","school")
11     print(query_set)
12     for i in query_set:
13         print(i)
14 
15         #学校对象
16         school_obj = models.School.objects.filter(id=i[‘school‘]).first()
17         #学校id
18         id = school_obj.id
19         #学校的名字
20         name = school_obj.name
21         #修改字典，key为school的值
22         i[‘school‘] = {"id":id,"name":name}
23 
24         #返回json对象，safe=False表示任何能转换为json格式的对象
25         return JsonResponse(list(query_set),safe=False)