lookups.py 文件源码

def batch_process_rhs(self, compiler, connection, rhs=None):
        if rhs is None:
            rhs = self.rhs
        if self.bilateral_transforms:
            sqls, sqls_params = [], []
            for p in rhs:
                value = Value(p, output_field=self.lhs.output_field)
                value = self.apply_bilateral_transforms(value)
                value = value.resolve_expression(compiler.query)
                sql, sql_params = compiler.compile(value)
                sqls.append(sql)
                sqls_params.extend(sql_params)
        else:
            params = self.lhs.output_field.get_db_prep_lookup(
                self.lookup_name, rhs, connection, prepared=True)
            sqls, sqls_params = ['%s'] * len(params), params
        return sqls, sqls_params