url_tags.py 文件源码

def fullurl(parser, token):
    """
    Builds an absolute (full) URL from the given location and the variables available in the request.

    If no location is specified, the absolute (full) URL is built on :py:meth:`django.http.HttpRequest.get_full_path`.

    It is a wrapper around :py:meth:`django.http.HttpRequest.build_absolute_uri`. It requires ``request`` to be available
    in the template context (for example, by using ``django.core.context_processors.request`` context processor).

    Samply usage::

        {% url path.to.some_view as the_url %}
        {% fullurl the_url %}
    """
    args = list(token.split_contents())

    if len(args) > 2:
        raise template.TemplateSyntaxError("'%s' tag requires at most one argument" % args[0])

    if len(args) == 2:
        url = parser.compile_filter(args[1])
    else:
        url = None

    return FullUrlNode(url)