Django：获取以前的URL [英] Django: getting previous url

问题描述

我有一个Post模型，在添加到数据库之前需要一定的类别，我希望自动生成该类别。点击addPost按钮可以转到不同的页面，所以该类别将通过获取前一页面的一部分来确定。

I have a Post model that requires a certain category before being added to the database, and I want the category to be generated automatically. Clicking the addPost button takes you to a different page and so the category will be determined by taking a part of the previous page url.

有没有办法获取以前的页面网址为字符串？

Is there a way to get the previous page url as a string?

谢谢

编辑：我已经添加了我的AddPost按钮。

I have added my AddPost button here.

<aside class="addPost">
       <article>
            <form action="/Forum/addPost">
                  <input type="submit" name="submit" value="Add Post"/>
            </form>
       </article>
</aside>

推荐答案

您可以使用 self.request.META ['HTTP_REFERER'] ，但如果只有您的标签上一页来自您的网站，则会存在，否则将不会有 HTTP_REFERER 在META dict 。所以要小心，请确保您正在使用 .get（）符号。

You can do that by using self.request.META['HTTP_REFERER'], but it will exist if only your tab previous page was from your website, else there will be no HTTP_REFERER in META dict. So be careful and make sure that you are using .get() notation instead.

# Returns None if user came from another website
referer = self.request.META.get('HTTP_REFERER')

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