Sequelize.js -异步验证器

Question

是否可能有一个使用Sequelize.js的异步验证器？在保存模型之前，我想检查是否存在关联。就像这样：

User = db.define("user", {
    name: Sequelize.STRING
},
{
    validate:
        hasDevice: ->
            @getDevices().success (devices) ->
                throw Exception if (devices.length < 1)
              return
})

# .... Device is just another model

User.hasMany(Device)

还是有一种强制检查同步运行的方法？(不理想)

Answer 1

您可以在v2.0.0中使用异步验证。它的工作方式如下：

var Model = sequelize.define('Model', {
  attr: Sequelize.STRING
}, {
  validate: {
    hasAssociation: function(next) {
      functionThatChecksTheAssociation(function(ok) {
        if (ok) {
          next()
        } else {
          next('Ooops. Something is wrong!')
        }
      })
    }
  }
})