article_tags.py 文件源码

def render(self, context):
        url = None

        # get the page number we're linking to from the context
        page_num = self.page_num.resolve(context)

        try:
            # determine what view we are using based upon the path of this page
            view, args, kwargs = resolve(context['request'].path)
        except (Resolver404, KeyError) as err:
            print err
            raise ValueError('Invalid pagination page.')
        else:
            # set the page parameter for this view
            kwargs['page'] = page_num

            # get the new URL from Django
            url = reverse(view, args=args, kwargs=kwargs)

        if self.varname:
            # if we have a varname, put the URL into the context and return nothing
            context[self.varname] = url
            return ''

        # otherwise, return the URL directly
        return url