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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from django.db.models import Q
class BaseManager(object):
model = None # 必填
base_query = Q()
@staticmethod
def filter_ids(ids):
return set(map(int, filter(None, ids)))
@staticmethod
def get_objs_by_query_and_order(model, query, order_by=[]):
"""
获取 query_set对象
:param model:
:param query:
:param order_by:
:return:
"""
_queryset = model.objects.filter(
query).order_by(*order_by)
return _queryset
def get_objs_by_ids(self, _ids):
"""
通过id获取对象, 内部的方法
:param _ids:
:return:
"""
_ids = self.filter_ids(_ids)
query = Q(pk__in=_ids) & self.base_query
return self.get_objs_by_query_and_order(self.model, query=query, order_by=[])