[1.3.X] Fixed #17319 -- Made the example for set_language less error-prone....

.. function:: set_language(request)

As a convenience, Django comes with a view, :func:`django.views.i18n.set_language`,

that sets a user's language preference and redirects back to the previous page.

that sets a user's language preference and redirects to a given URL or, by default,

back to the previous page.

Activate this view by adding the following line to your URLconf::

    <form action="/i18n/setlang/" method="post">

    {% csrf_token %}

    <input name="next" type="hidden" value="/next/page/" />

    <input name="next" type="hidden" value="{{ redirect_to }}" />

    <select name="language">

    {% get_language_info_list for LANGUAGES as languages %}

    {% for language in languages %}

    </select>

    <input type="submit" value="Go" />

    </form>

In this example, Django looks up the URL of the page to which the user will be

redirected in the ``redirect_to`` context variable.