使用事务可以有效的防止插入数据时出现错误影响数据的完整性，再出现错误的时候可以回滚事务，做到要么全部插入成功要么全部都不插入

from django.views import View
from main import models
from django.db import transaction
import json

class BillTypeAdd(View):
	'''
	新增账单类别api
	'''
	@transaction.atomic # 事务修饰器
	def post(self, request):
		status = False
		data = request.POST.get('data')

		# 用于事务保存
		savePoint = None

		try:
			data = json.loads(data)
			# 用于存储实例对象
			BillTypeModels = []
			for item in data:
				item.pop('id')
				BillTypeModels.append(models.BillType(**item))

			savePoint = transaction.savepoint() # 事务保存点

			models.BillType.objects.bulk_create(BillTypeModels)

			status = True
		except Exception as error:
			if savePoint:
				# 回滚事务
				transaction.rollback(savePoint)
			status = error.__str__()

		return HttpResponse(status)

几处重点需要注意

  • 导包，from django.db import transaction
  • 事务的保存点，savePoint = transaction.savepoint()
  • 回滚事务，transaction.rollback(savePoint)
  • 批量插入，bulk_create。批量插入需要提供的数据为models的实例