folder.py 文件源码

def render(self, name, value, attrs=None):
        obj = self.obj_for_value(value)
        css_id = attrs.get('id')
        css_id_folder = "%s_folder" % css_id
        css_id_description_txt = "%s_description_txt" % css_id
        if attrs is None:
            attrs = {}
        related_url = None
        if value:
            try:
                folder = Folder.objects.get(pk=value)
                related_url = folder.get_admin_directory_listing_url_path()
            except Exception:
                pass
        if not related_url:
            related_url = reverse('admin:filer-directory_listing-last')
        params = self.url_parameters()
        params['_pick'] = 'folder'
        if params:
            url = '?' + urlencode(sorted(params.items()))
        else:
            url = ''
        if 'class' not in attrs:
            # The JavaScript looks for this hook.
            attrs['class'] = 'vForeignKeyRawIdAdminField'
        super_attrs = attrs.copy()
        hidden_input = super(ForeignKeyRawIdWidget, self).render(name, value, super_attrs)

        # TODO: "id_" is hard-coded here. This should instead use the correct
        # API to determine the ID dynamically.
        context = {
            'hidden_input': hidden_input,
            'lookup_url': '%s%s' % (related_url, url),
            'lookup_name': name,
            'span_id': css_id_description_txt,
            'object': obj,
            'clear_id': '%s_clear' % css_id,
            'descid': css_id_description_txt,
            'noimg': 'filer/icons/nofile_32x32.png',
            'foldid': css_id_folder,
            'id': css_id,
            'LTE_DJANGO_1_7': LTE_DJANGO_1_7,
        }
        html = render_to_string('admin/filer/widgets/admin_folder.html', context)
        return mark_safe(html)