Question

我正在尝试使用列startsAt以asc顺序检索scheduled_class模型。模型的关联如下。

scheduled_class：class =＆gt; m：1
class：teacher =＆gt; 1：1
class：scheduled_class =＆gt; 1：M

我首先在数据库中查询schedule_class，然后包含与模型关联的类，然后包括与类模型关联的所有调度类，它们位于给定范围内。我能够在不订购数据的情况下检索数据。当我将order属性添加到sequelize时，它会产生以下错误。如何在asc命令中检索预定的类，以启动列启动？ `

＆＃34;消息＆＃34;：＆＃34;未知列＆＃39; class.name＆＃39;在＆＃39; order子句＆＃39;＆＃34;，＆＃34;代码＆＃34;：500，＆＃34; className＆＃34;：＆＃34; general-error＆＃34;，＆＃34;数据＆＃34;：{}

module.exports = function () {
      return function (context) {
        const sequelize = context.app.get('sequelizeClient');
        context.params.sequelize = {
          raw: false,
          include: [ {model: sequelize.models.attendance, paranoid: true} ],
          order: []
        };
        if(context.params.query && context.params.query.includeClasses) {
          let startDate = new Date();
          startDate.setMonth(startDate.getMonth() -1);
          startDate.setDate(1);
          let endDate = new Date();
          endDate.setMonth(endDate.getMonth() + 2);
          endDate.setDate(0);
          context.params.sequelize.include.push(
            {
              model: sequelize.models.classes,
              paranoid: true,
              include:[
                {
                  model:sequelize.models.teacher,
                  paranoid: true
                },
                {
                  model:sequelize.models.scheduled_class,
                  paranoid: true,
                  where: {
                    startsAt: {
                      $gte: startDate
                    },
                    endsAt: {
                      $lte: endDate
                    }
                  },
                },
                ],
              order: [[sequelize.models.teacher, 'id', 'DESC']]
            });
          context.params.sequelize.order.push([sequelize.models.classes, 'name', 'DESC']);
          //context.params.sequelize.order.push([sequelize.models.teacher, 'id', 'DESC']);
          //context.params.sequelize.order.push([sequelize.models.scheduled_class, 'startsAt', 'DESC']);
          delete context.params.query.includeClasses;
        }
      };
    };

Answer 1

我能够通过将父模型添加到订单子句来解决问题。

module.exports = function () {
  return function (context) {
    const sequelize = context.app.get('sequelizeClient');
    context.params.sequelize = {
      raw: false,
      include: [ {model: sequelize.models.attendance, paranoid: true} ],
      order: []
    };
    if(context.params.query && context.params.query.includeClasses) {
      let startDate = new Date();
      startDate.setMonth(startDate.getMonth() -1);
      startDate.setDate(1);
      let endDate = new Date();
      endDate.setMonth(endDate.getMonth() + 2);
      endDate.setDate(0);
      context.params.sequelize.include.push(
        {
          model: sequelize.models.classes,
          paranoid: true,
          include:[
            {
              model:sequelize.models.teacher,
              paranoid: true
            },
            {
              model:sequelize.models.scheduled_class,
              paranoid: true,
              where: {
                startsAt: {
                  $gte: startDate
                },
                endsAt: {
                  $lte: endDate
                }
              },
            },
            ],
        });
      context.params.sequelize.order.push([sequelize.models.classes, sequelize.models.scheduled_class, 'startsAt', 'ASC']);
      delete context.params.query.includeClasses;
    }
  };
};

在此之后包括class =＆gt; scheduled_class模型，我通过scheduled_class.startsAt ASC将订单推送到订单数组。

如何在sequelize中对嵌套模型中的列进行排序？

1 个答案: