node.js - 通过多对多关系表检索 Sequelize 行

Question

我有两个模型 Company 和 Contractor 通过 CompanyContractor 关系表链接。

company.js

'use strict';
module.exports = (sequelize, DataTypes) => {
  const Company = sequelize.define('Company', {
    name: {
      type: DataTypes.STRING(30),
      allowNull: false,
      unique: true
    },
    slug: {
      type: DataTypes.STRING(30),
      allowNull: false
    },
    description: DataTypes.STRING(200),
  }, {});

  Company.associate = function(models) {
    Company.belongsToMany(models.Contractor, { through: 'CompanyContractor', as: 'contractors',foreignKey: 'companyId' });
  };

  return Company;
};

contractor.js

'use strict';
module.exports = (sequelize, DataTypes) => {
  const Contractor = sequelize.define('Contractor', {
    name: {
      type: DataTypes.STRING(50),
      allowNull: false
    }
  }, {});
  Contractor.associate = function(models) {
    Contractor.belongsToMany(models.Company, { through: 'CompanyContractor', as: 'contractors' });
  };
  return Contractor;
};

companyContractor.js

'use strict';
module.exports = (sequelize, DataTypes) => {
  const CompanyContractor = sequelize.define('CompanyContractor', {
    companyId: {
      type: DataTypes.INTEGER,
      allowNull: false
    },
    contractorId: {
      type: DataTypes.INTEGER,
      allowNull: false
    }
  }, {
    timestamps: false
  });

  return CompanyContractor;
};

有没有办法通过companyId来Contractor.findAll()？

Answer 1

Contractor.findAll({
include: [{
   model: Company,
   through: {
        attributes: ['companyId']
      }
   }]
});

From the documentation