Node.js Sequelizejs“；isAfter"；与其他字段的验证

在Sequelize的文档中，他们提到了以下将日期字段值限制在某个日期之后的方法

validate: {
    isAfter: '2018-10-02'
}

但是我想对

req.body

像

---

字段验证器无权访问模型实例的其他属性。为了验证实例上的两个值是否通过验证检查，应在模型选项中使用Sequelize的自定义验证对象：

const SomeModel = db.define(
  'some_model',
  {
    start_date: {
      type: Sequelize.DATEONLY,
      validate: {
        isDate: true
      }
    },
    end_date: {
      type: Sequelize.DATEONLY,
      validate: {
        isDate: true
      }
    },
  },
  {
    validate: {
      startDateAfterEndDate() {
        if (this.start_date.isAfter(this.end_date)) {
          throw new Error('Start date must be before the end date.');
        }
      }
    }
  }
);

const SomeModel = db.define(
  'some_model',
  {
    start_date: {
      type: Sequelize.DATEONLY,
      validate: {
        isDate: true
      }
    },
    end_date: {
      type: Sequelize.DATEONLY,
      validate: {
        isDate: true
      }
    },
  },
  {
    validate: {
      startDateAfterEndDate() {
        if (this.start_date.isAfter(this.end_date)) {
          throw new Error('Start date must be before the end date.');
        }
      }
    }
  }
);