120 - DAO层 - 数据库 - MySQL

作用

这里主要是处理和数据库连接的异常

import inspect
from ..MySQL import logger
from ...models import schedule
from django.db.models import Sum
from django.core.paginator import Paginator,PageNotAnInteger,EmptyPage
class schedule_M():
    def __init__(self):
        self.class_name = "schedule_M()"
    def to_json(self, data, info="转成json"):
        try:
            return_data = {
                "id":data.id,
                "name":data.name,
                "content":data.content,
                "date":str(data.date)[0:10]
            }
            return return_data
        except Exception as e:
            logger.error(info+'数据库操作失败: '+ self.class_name + inspect.currentframe().f_code.co_name + str(e))
            raise
    # 分页查日程
    def select_schedule(self, page, page_size, info):
        try:
            infoList=schedule.objects.filter(is_deleted = 0).order_by('-date')
            paginator=Paginator(infoList,page_size)
            try:
                pageInfo=paginator.page(page)
            except PageNotAnInteger:
                pageInfo=paginator.page(1)
            except EmptyPage:
                pageInfo=paginator.page(paginator.num_pages)
            else:
                return_data = list(map(self.to_json, pageInfo))
                return_data = {
                    "data":return_data,
                    "page":page,
                    "num_pages":paginator.num_pages,
                    "count":paginator.count
                }
                return return_data
            # data = [{'user':'xxx1','content':'xxxxxxxxx','date':'2023-11-03 00:00:00'},
            #         {'user':'xxx2','content':'xxxxxxxxx','date':'2023-11-04 00:00:00'}]
        except Exception as e:
            logger.error(info+'数据库操作失败: '+ self.class_name + inspect.currentframe().f_code.co_name + str(e))
            raise
    # 新增一条日程
    def add_schedule(self, data, info):
        try:
            today = data['date']
            date_data = self.date_schedule(today, info)
            if date_data:
                return today+"已有日程"
            else:
                # data = {'name':'xxx', 'content':'xxxxxxxxx', 'date':'2023-11-03 00:00:00', }
                schedule.objects.create(**data)
                return "ok"
        except Exception as e:
            logger.error(info+'数据库操作失败: '+ self.class_name + inspect.currentframe().f_code.co_name + str(e))
            raise
    # 修改一条日程
    def update_schedule(self, id, data, info):
        try:
            # data = {'name':'xxx', 'content':'xxxxxxxxx', 'date':'2023-11-03 00:00:00', }
            schedule.objects.filter(id=id).update(**data)
            return "ok"
        except Exception as e:
            logger.error(info+'数据库操作失败: '+ self.class_name + inspect.currentframe().f_code.co_name + str(e))
            raise
    # 都删除一条日程
    def delete_schedule(self, id, info):
        try:
            # data = {'name':'xxx', 'content':'xxxxxxxxx', 'date':'2023-11-03 00:00:00', }
            schedule.objects.filter(id=id).update(is_deleted = 1)
            return "ok"
        except Exception as e:
            logger.error(info+'数据库操作失败: '+ self.class_name + inspect.currentframe().f_code.co_name + str(e))
            raise
    # 指定日期的日程
    def date_schedule(self, date, info):
        try:
            data = schedule.objects.get(date=date, is_deleted = 0)
            # data = [{'name':'xxx', 'content':'xxxxxxxxx', 'date':'2023-11-03 00:00:00', }]
            return_data = self.to_json(data)
            return return_data
        except Exception as e:
            return {}