如何使用django通用视图发送成功消息

Question

我是django（1.2.4）的新手。我创建了一些通用的意见。但是如何在使用django的消息框架创建学生时显示类似“学生成功添加”的内容？

Answer 1

据我所知，使用传统通用视图并不是一种简单的方法。我一直觉得通用视图的文档非常缺乏，所以从来没有使用它们。

从理论上讲，您可以通过假设重定向意味着成功提交来使用装饰器。

所以，你可以写这样的事情（没有这个代码已经过测试）：

urls.py：

try: 
    from functools import wraps 
except ImportError: 
    from django.utils.functional import wraps 
from django.http import HttpRedirectResponse 
from django.contrib import messages 
from django.views.generic import * 

def add_message(success_message=None): 
    def decorator(func): 
     def inner(request, *args, **kwargs): 
      resp = func(request, *args, **kwargs) 
      if isinstance(resp, HttpRedirectResponse): 
       messages.success(request, message) 
      return resp 
     return wraps(func)(inner) 
    return decorator 



student_info_edit = { 
    'template_name': 'myapp/student/form.html', 
    'template_object_name': 'student', 
    'form_class': studentForm, 
} 

student_info_new = { 
    'template_name': 'myapp/student/form.html', 
    'form_class': studentForm, 
    'post_save_redirect': '/myapp/students/', 
} 

urlpatterns += patterns('', 
    url(r'^students/$', list_detail.object_list, { 'queryset': Student.objects.all() }, name="students"), 
    url(r'^students/(?P<object_id>\d+)/$', add_message("Student record updated successfully")(create_update.update_object), student_info_edit, name="student_detail"), 
    url(r'^students/new$', add_message("The student was added successfully.")(create_update.create_object), student_info_new, name="student_new"), 
) 

所有这一切说和编码，则Django 1.3中引入class-based generic views，所以如果你有兴趣转向Django 1.3，你应该看看那些。他们可能会允许更多的定制，不确定。

从长远来看，我很少看到使用通用视图的好处形式，而这对于诸如添加/更新之类的东西来说是双倍的。

Answer 2

，你要求的是已经在Django通用视图实现的功能：

https://github.com/django/django/blob/1.2.X/django/views/generic/create_update.py#L115

你会看到在你的主模板，通过displaying messages的消息。

Answer 3

从Django 1.6+，使用任何class-based generic views，你可以依靠successMessageMixin。就像将mixin添加到类定义并将success_message属性设置为任何您想要的一样简单。

正如Olivier Verdier所提到的，请记住在您的主模板中输入display messages！

从docs一个简单的例子：

from django.contrib.messages.views import SuccessMessageMixin 
from django.views.generic.edit import CreateView 
from myapp.models import Author 

class AuthorCreate(SuccessMessageMixin, CreateView): 
    model = Author 
    success_url = '/success/' 
    success_message = "%(name)s was created successfully" 

更复杂的例子：

from django.contrib.messages.views import SuccessMessageMixin 
from django.views.generic.edit import CreateView 
from myapp.models import ComplicatedModel 

class ComplicatedCreate(SuccessMessageMixin, CreateView): 
    model = ComplicatedModel 
    success_url = '/success/' 
    success_message = "%(calculated_field)s was created successfully" 

    def get_success_message(self, cleaned_data): 
     # cleaned_data is the cleaned data from the form which is used for string formatting 
     return self.success_message % dict(cleaned_data, 
              calculated_field=self.object.calculated_field)