javascript – backbone.js和处理来自rails的错误消息？

respond_to：json

你将收到你的错误json(你需要使用respond_with(object))

class XYZController < ApplicationController
  respond_to :html,:json
  responders :jsons
  def create
    @xyz = Xyz.new( params[:xyz] )
    @xyz.save
    respond_with @xyz,:location=>@xyz.id.nil? ? "" : edit_xyz_url(@xyz)
  end
end

我创建了我的json响应器以更好地处理主干：

module Responders

  module JsonResponder 

    def to_json
      raise error unless resourceful?

      if get?
        display resource
      elsif has_errors?
        display resource.errors,:status => :unprocessable_entity
      elsif post?
        display resource,:status => :created,:location => api_location
      elsif put?
        display resource,:status=>:ok,:location => api_location
      elsif has_empty_resource_definition?
        display empty_resource,:status => :ok
      else
        head :ok
      end
    end
  end
end