为多个关系表续集JS ORM播种机

Question

我要续集以用于邮寄的初始数据负载的种子。表自动。

 // user_seeds.js
    up: function (queryInterface, Sequelize) {
      return queryInterface.bulkInsert(table, [{
        uid: 1, //primary key autogenerated 
        name: 'John doe',
        email: '[e-mail]',
        created_at,
        updated_at
    }], {});
    // roles_seeds.js
    up: function (queryInterface, Sequelize) {
      return queryInterface.bulkInsert(table, [{
        uid: 1,  //this should be comes from user table to this filed automatically after the creation of first record in user table
        name: 'admin',
        email: '[e-mail]',
        created_at,
        updated_at
      }, {
        id: 2,
        name: 'user',
        created_at,
        updated_at
    }]);

如何将主钥匙传递给另一个表作为外键自动而无需硬编码。

Answer 1

您必须将一个播种机与returning = true一起使用。以下是一个例子。您可能需要在某些地方使用续集模型而不是直接queryInterface。

// user_and_role_seeds.js
up: function (queryInterface, Sequelize) {
    return UserModel.bulkCreate([{
        uid: 1, // primary key autogenerated 
        name: 'John doe',
        email: '[e-mail]',
        created_at,
        updated_at
    }], {returning: true}).then(function(users){
        return queryInterface.bulkInsert(table, [{
            uid: users[0].uid, // Here you use users items
            name: 'admin',
            email: '[e-mail]',
            created_at,
            updated_at
        }, {
            id: users[1].uid,
            name: 'user',
            created_at,
            updated_at
        }]);
    });
}

• 续集版本：4.x
• Postgres版本：11.x