Sequelize官方GitHub：https://github.com/sequelize/sequelize
Sequelize官方中文文档：https://github.com/demopark/sequelize-docs-Zh-CN
Sequelize官方英文文档：http://docs.sequelizejs.com/

Working with legacy tables - 使用遗留表

虽然 Sequelize 自认为可以开箱即用, 但是如果你要使用应用之前遗留的资产和凭据,仅需要做一点微不足道的设置即可。

表

sequelize.define('user', {

}, {
  tableName: 'users'
});

字段

sequelize.define('modelName', {
  userId: {
    type: Sequelize.INTEGER,
    field: 'user_id'
  }
});

主键

Sequelize将假设您的表默认具有id主键属性。

要定义你自己的主键：

sequelize.define('collection', {
  uid: {
    type: Sequelize.INTEGER,
    primaryKey: true,
    autoIncrement: true // Automatically gets converted to SERIAL for postgres
  }
});

sequelize.define('collection', {
  uuid: {
    type: Sequelize.UUID,
    primaryKey: true
  }
});

如果你的模型根本没有主键，你可以使用 Model.removeAttribute('id');

外键

// 1:1
Organization.belongsTo(User, {foreignKey: 'owner_id'});
User.hasOne(Organization, {foreignKey: 'owner_id'});

// 1:M
Project.hasMany(Task, {foreignKey: 'tasks_pk'});
Task.belongsTo(Project, {foreignKey: 'tasks_pk'});

// N:M
User.hasMany(Role, {through: 'user_has_roles', foreignKey: 'user_role_user_id'});
Role.hasMany(User, {through: 'user_has_roles', foreignKey: 'roles_identifier'});