Sequelize - 按关联计数排序

Question

我有两个模型，Company 和 Employee。协会就像 Company hasMany Employee。员工属于公司。

我必须按关联的数量按降序列出所有公司。

我的功能如下，

function get() {
     return Company.findAndCountAll({
       where: { status: Active }, 
       include: [
      {
        model: Employee,
        as: 'employees'
      }
    ],
     }).then((companies) => {
         return companies
      })
}

我可以按顺序给出什么，以便我可以根据协会（员工）的数量按降序获得公司列表。

请帮帮我...

我已经尝试如下。但它会抛出类似 invalid reference to FROM-clause entry for table Companies 之类的错误。

function get() {
     return Company.findAndCountAll({
       where: { status: Active }, 
       include: [
      {
        model: Employee,
        as: 'employees'
      }
    ],
     attributes: [
        [Sequelize.literal('(SELECT COUNT(*) FROM employees WHERE employees.company_id = companies.id)'), 'employeesCount']
    ],
    order: [[Sequelize.literal('employeesCount'), 'DESC']],
     }).then((companies) => {
         return companies
      })
}

company 是表名。

Answer 1

你可以试试这个。

请将您的 fieldName 替换为 sortField

function get() {
     return Company.findAndCountAll({
       where: { status: Active }, 
       include: [
      {
        model: Employee,
        as: 'employees'
      }
    ],
    order: [[sortField, 'DESC']]
     }).then((companies) => {
         return companies
      })
}