django transaction用法

from django.db import transaction
from django.http import HttpResponse
from django.utils.decorators import method_decorator


# 类中添加装饰器，保证在该类中所有的数据库操作都在一个事物中
@method_decorator(transaction.atomic, name='dispatch')
class MyView1(object):

    def get(self, request):
        return HttpResponse('GET')

    def post(self, request):
        return HttpResponse('POST')


class MyView2(object):

    # 保证在该函数中所有的数据库操作都在一个事物中
    @transaction.atomic
    def post(self, request):

        # 设置事物保存点（可设多个）
        t1 = transaction.savepoint()

        # 如果有异常情况可回滚到指定的保存点
        transaction.savepoint_rollback(t1)

        # 如果没有异常可提交事物
        transaction.savepoint_commit(t1)
        return HttpResponse('POST')