使用mongodb作为数据库的rails中的关联

我正在使用设计。 它将当前用户标识赋予

current_user.id 

有很多用户。 控制器名称为empsals_controller.rb

 class EmpsalsController < ApplicationController def index @empsals = Empsal.all end def show @empsal = Empsal.find(params[:id]) end def new @empsal = Empsal.new end def edit @empsal = Empsal.find(params[:id]) end def create @empsal = Empsal.new(params[:empsal]) respond_to do |format| if @empsal.save format.html { redirect_to @empsal, notice: 'Empsal was successfully created.' } format.json { render json: @empsal, status: :created, location: @empsal } else format.html { render action: "new" } format.json { render json: @empsal.errors, status: :unprocessable_entity } end end end def update @empsal = Empsal.find(params[:id]) respond_to do |format| if @empsal.update_attributes(params[:empsal]) format.html { redirect_to @empsal, notice: 'Empsal was successfully updated.' } format.json { head :no_content } else format.html { render action: "edit" } format.json { render json: @empsal.errors, status: :unprocessable_entity } end end end def destroy @empsal = Empsal.find(params[:id]) @empsal.destroy respond_to do |format| format.html { redirect_to empsals_url } format.json { head :no_content } end end 

该控制器的型号是

 class Empsal include Mongoid::Document belongs_to :paygrade field :salary_component, type: String field :pay_frequency, type: String field :currency, type: String field :amount, type: String field :comments, type: String validates_presence_of :pay_frequency end 

我想与具有模型user.rb的设计建立关联，以便相关用户可以查看其相关数据。

 class User include Mongoid::Document include Mongoid::Timestamps devise :database_authenticatable, :registerable, #:confirmable, :recoverable, :rememberable, :trackable, :validatable, :timeoutable, :timeout_in => 2.minutes field :role end 

Answer 1

除了在用户模型中设置反向关联外，您拥有所需的一切：

 class User include Mongoid::Document include Mongoid::Timestamps has_many :empsals # <<<<<<< added line devise :database_authenticatable, :registerable, #:confirmable, :recoverable, :rememberable, :trackable, :validatable, :timeoutable, :timeout_in => 2.minutes field :role end 

请参阅http://mongoid.org/en/mongoid/docs/relations.html#has_many上的文档

有了这个，你可以做的事情

 @user.empsals # it will be a list of Empsal instances