django在POST表单提交后显示消息 [英] django display message after POST form submit

问题描述

我有一个带有POST表单的页面，该页面的操作设置为某些url.
即假设此页面网址为/form_url/: ..

I have a page with a POST form, that have a action set to some url.
i.e assume this page url is /form_url/ : ..

/submit_url/中的视图负责处理表单数据.此后，我想返回带有成功消息的表单的同一页面. 在照顾POST表单的视图中，我使用HttpResponseRedirect以便从浏览器中清除"表单数据. 但是以这种方式，除非执行以下操作，否则我无法在表单页面中显示消息:

The view in /submit_url/ take care of the form data. After this, I want to return the same page of the form with a success message. In the view that take care for the POST form, I use HttpResponseRedirect, in order to "clear" the form data from the browser. But in this way I can't display a message in the form page, unless I do something like:

return HttpResponseRedirect("/form_url/?success=1")

，然后在模板中检查此参数.我不喜欢这种方式，因为如果用户刷新页面，他仍然会看到成功消息.

and then check for this parameter in the template. I don't like this way, since if the user refreshes the page, he will still see the success message.

我注意到在django管理站点中，对象的删除/添加确实在POST提交后使用重定向，并且仍然以某种方式显示成功消息. 怎么样?

I've noticed that in django admin site, the delete/add of objects does use redirect after POST submit, and still display a success message somehow. How?

我已经简要地看过django消息传递"应用程序，但是我想先了解它的工作原理.

I've already briefly seen django "messaging" app, but I want to know how it work first..

推荐答案

django管理员使用django.contrib.messages，您可以像这样使用它:

The django admin uses django.contrib.messages, you use it like this:

您认为:

from django.contrib import messages

def my_view(request):
    ...
       if form.is_valid():
          ....
          messages.success(request, 'Form submission successful')

在您的模板中:

{% if messages %}
<ul class="messages">
    {% for message in messages %}
    <li  {% if message.tags %} class=" {{ message.tags }} " {% endif %}> {{ message }} </li>
    {% endfor %}
</ul>
{% endif %}

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