Python Django删除当前对象(Python Django delete current object)

 案例我在/ notes / get / 1 /其中id = 1，并且我在note.html中创建了一个“Delete Note”链接。 我需要它从数据库和应用程序中删除当前的注释并重定向到/ notes / all。 你可以帮我用def delete中的代码吗？  
 models.py：  
class Note(models.Model): 
   title = models.CharField(max_length=200)
   body = models.TextField()
   cr_date = models.DateTimeField(auto_now_add=True)
 
 urls.py：  
urlpatterns = patterns('',

  url(r'^all/$', 'note.views.notes'), 
  url(r'^get/(?P<note_id>\d+)/$', 'note.views.note'), #
  url(r'^language/(?P<language>[a-z\-]+)/$', 'note.views.language'), # 
  url(r'^create/$', 'note.views.create'),
  url(r'^delete/$', 'note.views.delete'), <--------------------------
  url(r'^search/$', 'note.views.search_titles'),
 )
 
 views.py：  
def delete(??????):
    ?????  <-------------------------------------------
    return HttpResponseRedirect('/notes/all')

Case I am in /notes/get/1/ where id=1 and I have created a "Delete Note" link in note.html. I need it to delete the current note from database and app and redirect to /notes/all. Can you help me with the code in def delete?  
models.py: 
class Note(models.Model): 
   title = models.CharField(max_length=200)
   body = models.TextField()
   cr_date = models.DateTimeField(auto_now_add=True)
 
urls.py: 
urlpatterns = patterns('',

  url(r'^all/$', 'note.views.notes'), 
  url(r'^get/(?P<note_id>\d+)/$', 'note.views.note'), #
  url(r'^language/(?P<language>[a-z\-]+)/$', 'note.views.language'), # 
  url(r'^create/$', 'note.views.create'),
  url(r'^delete/$', 'note.views.delete'), <--------------------------
  url(r'^search/$', 'note.views.search_titles'),
 )
 
views.py: 
def delete(??????):
    ?????  <-------------------------------------------
    return HttpResponseRedirect('/notes/all')

原文：https://stackoverflow.com/questions/19382664

更新时间：2022-03-21 15:03

最满意答案

from django.shortcuts import get_object_or_404
from django.core.urlresolvers import reverse


def delete(request, id):
    note = get_object_or_404(Note, pk=id).delete()
    return HttpResponseRedirect(reverse('notes.views.notes'))
 
 并在urls.py  
url(r'^delete/(?P<id>\d+)/$','project.app.views.delete'),
 
 确保在删除对象之前检查用户权限，可以使用@permission_required修饰器https://docs.djangoproject.com/en/1.5/topics/auth/default/#the-permission-required-decorator 。 如果您没有检查，用户可以轻松删除所有笔记。  
 通常，使用POST或DELETE请求而不是GET来从数据库中删除对象是一个好主意。 想象一下，google-bot抓取您的网站并访问notes / delete / 2。 

from django.shortcuts import get_object_or_404
from django.core.urlresolvers import reverse


def delete(request, id):
    note = get_object_or_404(Note, pk=id).delete()
    return HttpResponseRedirect(reverse('notes.views.notes'))
 
And in urls.py 
url(r'^delete/(?P<id>\d+)/$','project.app.views.delete'),
 
Make sure that you check the user permissions before deleting an object, you can use the @permission_required decorator https://docs.djangoproject.com/en/1.5/topics/auth/default/#the-permission-required-decorator. If you don't check this an user can delete all notes easily. 
Usually it's a good idea to remove objects from the DB using a POST or DELETE request, instead of a GET. Imagine that google-bot crawls your site and visits notes/delete/2.