我使用 django 和 MySQL 作为数据库来执行添加、编辑和删除详细信息。我使用下面的代码执行了添加和编辑，但删除不起作用。
视图.py：
import logging
import smtplib
from django.db import connection
from django.shortcuts import render
from django.http import HttpResponse
from polls.models import Poll
from django.template import Context, loader
from django.shortcuts import get_object_or_404, render_to_response
from myapp.models import Book
from django.shortcuts import render_to_response,redirect
from django.shortcuts import get_object_or_404, render
from django.http import HttpResponseRedirect
from django.core.context_processors import csrf
from django.template import RequestContext
log = logging.getLogger(__name__)
def index(request):
books = Book.objects.all()
context={'books':books}
return render(request,'index.html', context)
def addbook(request):
if request.POST:
book_name =request.POST['book_name']
author_name =request.POST['author_name']
publisher_name =request.POST['publisher_name']
book = Book(book_name=book_name, author_name=author_name, publisher_name=publisher_name)
book.save()
return render_to_response('book_detail.html', {'books': book},context_instance=RequestContext(request))
else:
return render_to_response('addbook.html',context_instance=RequestContext(request))
def book_detail(request):
return render(request, 'book_detail.html')
def editbook(request,book_id):
if request.POST:
book_name =request.POST['book_name']
author_name =request.POST['author_name']
publisher_name =request.POST['publisher_name']
books=Book.objects.filter(book_id=book_id).update(book_name=book_name, author_name=author_name, publisher_name=publisher_name)
return redirect('/index/')
else:
books = Book.objects.get(pk=book_id)
return render_to_response('editbook.html',{'books':books},context_instance=RequestContext(request))
def deletebook(request,book_id):
if request.POST:
book_name =request.POST['book_name']
author_name =request.POST['author_name']
publisher_name =request.POST['publisher_name']
books=Book.objects.filter(book_id=book_id).delete(book_name=book_name, author_name=author_name, publisher_name=publisher_name)
return redirect('/index/')
else:
books = Book.objects.get(pk=book_id)
return render_to_response('deletebook.html',{'books':books},context_instance=RequestContext(request))
网址.py：
from django.conf.urls import patterns, include, url
from DemoApp.views import index,addbook,editbook, book_detail
from django.contrib import admin
admin.autodiscover()
urlpatterns = patterns('',
url('^$', index),
url('^index/$', index),
url('^addbook/$', addbook),
url('^book_detail/$', book_detail, 'book_summary'),
url('^editbook/(?P<book_id>\d+)/$',editbook) ,
url('^deletebook/(?P<book_id>\d+)/$',deletebook) ,
#url(r'^admin/', include(admin.site.urls)),
)
HTML 模板：
<html>
<head>
<title>{{ page_title }}</title>
</head>
<body>
<div align="center">
<table border="0" cellpadding='5' cellspacing='5'>
<tr>
<form action="/deletebook/{{ books.book_id}}/" method="POST"> {% csrf_token %}
<input type="text" name="book_name" value="{{books.book_name}}"></input><br>
<input type="text" name="author_name" value="{{books.author_name}}"></input><br>
<input type="text" name="publisher_name" value="{{books.publisher_name}}"></input><br>
<input type="submit" value="delete">
</form>
<p> Output: {{ output }} </p>
<p>{{ book_name }}</p>
</tr>
</table>
</div>
</body>
</html>
我没有使用任何形式。我无法对特定行执行删除操作。它给出了一条错误消息。请检查此片段并用正确的片段回复我。
我的要求是我想从表中删除选定的行。我正在使用 MySQL。