ruby-on-rails – 如何使用Ember Data&Rails在单个Ember.js

我无法使用Ember.js,Ember Data和Rails确定使用单个表单保持hasMany关联的正确方法.客户有很多项目.我有一个新的项目表单,有两个字段：项目名称和客户端名称. http://cl.ly/image/3z0P0R3M1t2u

我试图将我的创建逻辑保留在Ember.js ClientsController& ProjectsController,但是我需要将其中的一部分移动到我的ProjectsNewView上的提交操作吗？

更新：我在找到这个issue之后更新了我的代码.我越来越近了,但是Rails ProjectsController仍然没有收到关联的client_id.它不是控制器接收的参数的一部分.我觉得我可能不是最好的方式.

楷模：

轨道

class Client < ActiveRecord::Base
  attr_accessible :name

  has_many :projects
  accepts_nested_attributes_for :projects
  validates :name,:presence => true
end

class Project < ActiveRecord::Base
  attr_accessible :name,:client_id

  belongs_to :client

  validates :name,:presence => true
  validates :client,:presence => true
end

Ember.js

App.Client = DS.Model.extend
  name: DS.attr('string')
  projects: DS.hasMany('App.Project',{ embedded: true })

  validate: ->
    if @get('name') is null or @get('name') is ''
      'Client requires a name.'

App.Project = DS.Model.extend
  name: DS.attr('string')
  client: DS.belongsTo('App.Client')

  validate: ->
    if @get('name') is `undefined` or @get('name') is null or @get('name') is ''
      return 'Projects require a name.'
    if @get('client') is `undefined` or @get('client') is null or @get('client') is ''
      'Projects require a client.'

控制器：

轨道

class Api::ClientsController < Api::BaseController    
  def create
    @client = Client.find_or_create_by_name(params[:client][:name])

    respond_to do |format|
      if @client.save
        format.json { render json: @client,status: :create }
      else
        format.json { render json: @client.errors,status: :unprocessable_entry }
      end
    end
  end
end

class Api::ProjectsController < Api::BaseController
  def create
    @project = Project.new(params[:project])

    respond_to  do |format|
      if @project.save
        format.json { render json: @project,status: :created,location: @project }
      else
        format.json { render json: @project.errors,status: :unprocessable_entry }
      end
    end
  end
end

Ember.js

App.ClientsController = Em.ArrayController.extend
  createClient: (data) ->
    @transaction = App.store.transaction()
    client = @transaction.createRecord(App.Client,data)

    project_data = data.projects_attributes[0]
    client.get('projects').createRecord(project_data)

    validation_errors = client.validate()

    if validation_errors
      App.displayError validation_errors
      client.destroy()
    else
      @transaction.commit()

App.ProjectsController = Em.ArrayController.extend
  createProject: (data) ->
    @transaction = App.store.transaction()
    project = @transaction.createRecord(App.Project,data)
    validation_errors = project.validate()

    if validation_errors
      App.displayError validation_errors
      project.destroy()
    else
      @transaction.commit()
      App.get('router').transitionTo('projects')

浏览次数：

Ember.js

App.ProjectsNewView = Em.View.extend
  classNames: ['form row']
  tagName: 'form'
  templateName: 'projects/new'

  init: ->
    @_super()

  submit: (event) ->
    event.preventDefault()

    client = {}
    client.name = @get('client')

    project = {}
    project.name = @get('name')

    client.projects_attributes = []
    client.projects_attributes.push project

    App.router.clientsController.createClient(client)

{associations: true}

App.Client 
 ##
 toJSON: (options={}) ->
   options['associations'] = true
   @_super(options)