Question

我有3个型号;考试，参与和用户。它们之间存在着许多关系 - 而参与模型是一种联合模式。

我可以列出所有参与或显示特定参与（请参阅下面的我的控制器） - 但我的目标是创建一个名为“我的参与”的页面 - 用户只能看到他们的参与。参与模型有一个“user_id”字段用于此目的，但我不知道如何在控制器中创建这种页面或方法。

提前致谢。

这是我的模型结构：

examination.rb =＆gt;

class Examination < ActiveRecord::Base
  has_many :participations
  has_many :users, :through => :participations

  has_many :bookings
  has_many :exam_centers, :through => :bookings
end

participation.rb =＆gt;

class Participation < ActiveRecord::Base
  belongs_to :user
  belongs_to :examination
end

user.rb =＆gt;

class User < ActiveRecord::Base
  has_many :participations
  has_many :examinations, :through => :participations
end

正如您所看到的，我将“参与”作为考试和用户模型之间的联接模型。他们有很多通过丰富的关系。

participations_controller.rb =＆gt;

#encoding: utf-8

class ParticipationsController < ApplicationController

  before_filter :authenticate_user!
  before_action :set_participation, only: [:show, :edit, :update, :destroy]
  before_filter :get_examination

  def get_examination
    @examination = Examination.find(params[:examination_id])
  end

  def index
    @participations = @examination.participations
    respond_to do |format|
      format.html
      format.csv { send_data @participations.to_csv }
      format.xls # { send_data @examinations.to_csv(col_sep: "\t") }
    end
  end

  def show
    @participation = @examination.participations.find(params[:id])
  end

  def new
    @participation = Participation.new
  end

  def edit
  end

  def create
    @participation = @examination.participations.new(participation_params)
    @participation.user = current_user

    respond_to do |format|
      if @participation.save
        format.html { redirect_to [@examination, @participation], notice: 'Başvuru işleminiz başarıyla tamamlandı! Lütfen başvurunuzu kontrol ediniz ve onaylayınız. Onaylanmamış başvurular geçersiz sayılacaktır!' }
        format.json { render action: 'show', status: :created, location: [@examination, @participation] }
      else
        render 'new'
        format.html { render action: 'new' }
        format.json { render json: @participation.errors, status: :unprocessable_entity }
      end
    end
  end

  def update
    respond_to do |format|
      if @participation.update(participation_params)
        format.html { redirect_to [@examination, @participation], notice: 'Başvurunuz Başarıyla Güncellendi! Lütfen başvurunuzu kontrol ediniz ve onaylayınız. Onaylanmamış başvurular geçersiz sayılacaktır!' }
        format.json { head :no_content }
      else
        format.html { render action: 'edit' }
        format.json { render json: participation.errors, status: :unprocessable_entity }
      end
    end
  end

  def destroy
    @participation.destroy
    respond_to do |format|
      format.html { redirect_to examination_participations_path }
      format.json { head :no_content }
    end
  end

  def approve_application
    @participation = @examination.participations.find(params[:id])
    @participation.is_approved = true
    @participation.save
    redirect_to examination_participation_path, notice: 'Kaydınızı Onayladınız! Tebrikler!'
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_participation
      @participation = Participation.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def participation_params
      params.require(:participation).permit(:user_id, :examination_id, :payment_status, :language_preference, :exam_center_preference, :disability)
    end
end

架构结构=＆gt;

  create_table "examinations", force: true do |t|
    t.string   "name"
    t.string   "shortname"
    t.datetime "exam_date"
  end

  create_table "participations", force: true do |t|
    t.integer  "user_id"
    t.integer  "examination_id"
    t.boolean  "payment_status"
    t.string   "language_preference"
    t.string   "exam_center_preference"
  end

  create_table "users", force: true do |t|
    t.string   "email",                  default: "", null: false
    t.string   "first_name",             default: "", null: false
    t.string   "last_name",              default: "", null: false
    t.string   "id_number"
  end

路线=＆gt;

devise_for :users

resources :examinations do
  resources :participations do
    member do
      get :update_profile_information
      get :approve_application
    end
  end
end

Answer 1

您可以创建一个新控制器，例如MyParticipationsController，并创建index操作以显示当前用户的参与。

应用程序/控制器/ my_participations_controller.rb

class MyParticipationsController < ApplicationController
  before_filter :authenticate_user!

  def index
    @participations = current_user.participations
  end
end

配置/ routes.rb中

resources :my_participations, only: [:index]

如果需要，您可以删除index中的ParticipationsController操作。

在Rails中创建用户特定的参与页面4

1 个答案: