NoMethodError в Pages # dashboard

Question

Я создаю панель для моего приложения, но когда я хочу отображать отзывы, я получаю NoMethodError, хотя я определил переменные в контроллере. Я получаю сообщение об ошибке при просмотре страницы панели мониторинга. Вот мой код

pages_controller.rb

class PagesController < ApplicationController 
    before_action :authenticate_user!, only: [:dashboard] 

    def about 
    end 

    def help 
    end 

    def contact 
    end 

def dashboard 
    @user = current_user 
    @places = @user.places 
    @reviews = @user.reviews 
end 

end 

reviews_controller.rb

class ReviewsController < ApplicationController 
    before_action :set_review, only: [:edit, :update, :destroy] 
    before_action :set_place 
    before_action :authenticate_user! 



    # GET /reviews/new 
    def new 
    @review = Review.new 
    end 

    # GET /reviews/1/edit 
    def edit 
    end 

    # POST /reviews 
    # POST /reviews.json 
    def create 
    @review = Review.new(review_params) 
    @review.user_id = current_user.id 
    @review.place_id = @place.id 
    @review.save 
    redirect_to place_path(@place) 
    end 

    # PATCH/PUT /reviews/1 
    # PATCH/PUT /reviews/1.json 
    def update 
    respond_to do |format| 
     if @review.update(review_params) 
     format.html { redirect_to @review, notice: 'Review was successfully updated.' } 
     format.json { render :show, status: :ok, location: @review } 
     else 
     format.html { render :edit } 
     format.json { render json: @review.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # DELETE /reviews/1 
    # DELETE /reviews/1.json 
    def destroy 
    @review.destroy 
    respond_to do |format| 
     format.html { redirect_to reviews_url, notice: 'Review was successfully destroyed.' } 
     format.json { head :no_content } 
    end 
    end 

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

    def set_place  
    unless @place = Place.where(id: params[:place_id]).first 
    redirect_to places_path, flash: {alert: "Place doesn't exists"} 
    end 
end 

    # Never trust parameters from the scary internet, only allow the white list through. 
    def review_params 
     params.require(:review).permit(:comment,:rating) 
    end 
end 

places_controller.rb

class PlacesController < ApplicationController 
    before_action :set_place, only: [:show, :edit, :update, :destroy] 
    before_action :authenticate_user! , except: [:index,:show] 

    # GET /places 
    # GET /places.json 
    def index 
    @places = Place.all 
    end 

    # GET /places/1 
    # GET /places/1.json 
    def show 
    @reviews = Review.where(place_id: @place.id) 
    end 

    # GET /places/new 
    def new 
    @place = Place.new 
    end 

    # GET /places/1/edit 
    def edit 
    end 

    # POST /places 
    # POST /places.json 
    def create 
    @place = Place.new(place_params) 
    @place.user_id = current_user.id 

    respond_to do |format| 
     if @place.save 
     format.html { redirect_to @place, notice: 'Place was successfully created.' } 
     format.json { render :show, status: :created, location: @place } 
     else 
     format.html { render :new } 
     format.json { render json: @place.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # PATCH/PUT /places/1 
    # PATCH/PUT /places/1.json 
    def update 
    respond_to do |format| 
     if @place.update(place_params) 
     format.html { redirect_to @place, notice: 'Place was successfully updated.' } 
     format.json { render :show, status: :ok, location: @place } 
     else 
     format.html { render :edit } 
     format.json { render json: @place.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # DELETE /places/1 
    # DELETE /places/1.json 
    def destroy 
    @place.destroy 
    respond_to do |format| 
     format.html { redirect_to places_url, notice: 'Place was successfully destroyed.' } 
     format.json { head :no_content } 
    end 
    end 

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

    # Never trust parameters from the scary internet, only allow the white list through. 
    def place_params 
     params.require(:place).permit(:name, :address, :description, :phone, :website) 
    end 
end 

/pages/dashboard.html.erb

<div class="container"> 
<div class="row"> 
<div class="col-md-2"> 


</div> 
<div class="col-md-5"> 
<h3>My Places</h3> 

<table class="table table-hover"> 
     <thead> 
     <tr> 
      <th>Name</th> 
      <th>Created</th> 
      <th></th> 
     </tr> 
     </thead> 
     <tbody> 
     <% @places.each do |place| %> 
     <tr> 
      <td><%= place.name %></td> 
      <td><%= time_ago_in_words(place.created_at) %> ago</td> 
      <td><%= link_to "Edit", edit_place_path(place) %>|<%= link_to "Destroy", place_path(place), method: :delete %></td> 
     </tr> 
     <% end %> 
     </tbody> 
    </table> 
<%= link_to "New Place", new_place_path %> 
</div> 


<h3>My Reviews</h3> 
<table class="table table-hover"> 
     <thead> 
     <tr> 
      <th>Place</th> 
      <th>Created</th> 
      <th></th> 
     </tr> 
     </thead> 
     <tbody> 
     <% @reviews.each do |review| %> 
     <tr> 
      <td><%= review.place.name %></td> 
      <td><%= time_ago_in_words(review.created_at) %> ago</td> 
      <td><%= link_to "Edit", edit_review_path(review) %>|<%= link_to "Destroy", review_path(review), method: :delete %></td> 
     </tr> 
     <% end %> 
     </tbody> 
    </table> 
</div> 
</div> 
</div> 

Вот скриншот:

ли кто-нибудь имел эту проблему раньше?

Answer 1

проблема, с которой вы сталкиваетесь, заключается в том, что место равно нулю. вы можете добавить метод попробовать, как этот

<td><%= review.place.try(:name) %></td>

Answer 2

Обзор не имеет ассоциированных мест. Таким образом, вы должны выполнить проверку перед попыткой ее выполнить.

Попробуйте это:

<td><%= review.try(:place).try(:name) %></td>