filters.py 文件源码

def choices(self):
        self.lookup_in_val = (type(self.lookup_in_val) in (tuple,list)) and self.lookup_in_val or list(self.lookup_in_val)
        yield {
            'selected': len(self.lookup_in_val) == 0,
            'query_string': self.query_string({},[self.lookup_in_name]),
            'display': _('All'),
        }
        for val in self.lookup_choices:
            yield {
                'selected': smart_unicode(val) in self.lookup_in_val,
                'query_string': self.query_string({self.lookup_in_name: ",".join([val]+self.lookup_in_val),}),
                'remove_query_string': self.query_string({self.lookup_in_name: ",".join([v for v in self.lookup_in_val if v != val]),}),
                'display': val,
            }

# @manager.register