django_cvb和fvb

cvb 即class view 和funtion view 两种方式发送get和post请求

前后端不分离的写法，定义一个html(form.html)，在view中写逻辑（cvb&fvb）

备注：需要注意csrf的问题，如果多次提交重复的数据会报403，解决办法两种

1.在settings.py-MIDDLEWARE-将csrf（第四行）注释掉

2.在form.html中写{% csrf_token%}

form.html的代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/add_article/" method="post">

{% csrf_token %}

    title:<input type="text" name="title">
    desc:<input type="text" name="desc">
    content:<input type="text" name="content">
    category:<select name="category">
        {% for c in categorys %}
            <option value="{{ c.id }}">{{ c.name }}</option>
        {% endfor %}
    </select>
    <input type="submit" value="提交">
</form>
</body>
</html>

views.py中的代码

#function fvb方式
def add_article(request):
    if request.method == 'GET':
        categorys = Category.objects.all()
        return render(request,'form.html',locals())
    else:
        title = request.POST.get('title')
        desc = request.POST.get('desc')
        content = request.POST.get('content')
        category = request.POST.get('category')
        article = Article(title=title,desc=desc,category_id=category,content=content)
        article.save()
        return HttpResponseRedirect('/blog')#重定向


#class cvb方式
class ArticleView(View):
    def get(self,request):
        categorys = Category.objects.all()
        return render(request, 'form.html', locals())
    def post(self,request):
        title = request.POST.get('title')
        desc = request.POST.get('desc')
        content = request.POST.get('content')
        category = request.POST.get('category')
        article = Article(title=title, desc=desc, category_id=category, content=content)
        article.save()
        return HttpResponseRedirect('/blog')  # 重定向

urls.py

from django.contrib import admin
from django.urls import path
from user.views import index,test,blog,detail,add_article,ArticleView

urlpatterns = [
    path('admin/', admin.site.urls),
    path('index/', index),#添加访问的url,index/可自定义,index是views.py中的方法
    path('test/', test),
    path('blog/', blog),
    # path('category/<int:id>', category),
    path('detail/', detail),
    # path('add_article/', add_article),#fvb方式
    path('add_article/', ArticleView.as_view()),#cvb方式


]

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