Ошибка: неопределенный метод `Truncate 'для Nil: NilClass

Question

Обновление Я исправил это, удалив укороченные теги descritpion и HTML -Безопасные теги. Не совсем то, что я хотел, потому что мне все еще нужна эта функция, но, наконец, сайт работает, и я могу выяснить, в чем проблема.

Я пытался урезать описание поста в блоге, но это не так работать, поэтому я удалил все, что связано с усечением. Мое приложение rails работает над разработкой, но не отображает домашнюю страницу в рабочей среде heroku, хотя остальные страницы любят / blog и / статьи. Ссылка на сайт: https://www.xrloaded.com Ссылка на мой репо: https://github.com/maxrosales83/findXRJobs

Я хочу устранить ошибку и снова загрузить домашнюю страницу.

Я ценю любую помощь. Спасибо.

Я не уверен, почему отображается ошибка. Я искал ответы, но ничего не имело смысла. Вот моя модель статей:

 class Article < ActiveRecord::Base
  belongs_to :user , :optional => true
  mount_uploader :blogimage, AvatarUploader
    def admin?
      admin
    end
end

Вот мой контроллер статей:

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



    def new
        @article = Article.new
    end

    def index
        @articles = Article.limit(3).order("id desc")
        @secondrow = Article.limit(3).offset(3).order("id desc")
    end

    def create
      #render plain: params[:article].inspect
      @article = Article.new(article_params)
        if @article.save
            flash[:notice] = "Article was successfully created"
            redirect_to article_path(@article)
        else
            render 'new'
        end
    end

    def edit

    end

    def update

      if @article.update(article_params)
       flash[:notice] = "Article was updated"
       redirect_to article_path(@article)
      else
       flash[:notice] = "Article was not updated"
       render 'edit'
      end
    end

    def show

    end

    def destroy

      @article.destroy
      flash[:notice] = "Article was deleted"
      redirect_to articles_path
    end
    private
        def article_params
            params.require(:article).permit(:title, :description, :blogimage)
        end
        def set_article
            @article = Article.find(params[:id])
        end
end

Представление статей:

<!-- page header (title, etc) -->
   <div class="main-header">
     <section class="hero">
   <div class="hero-body">
     <div class="container">
       <div class="has-text-centered">
         <!-- header && subheader -->
         <h1 class="title is-1 is-spaced">XR Loaded Blog</h1>

         <!-- end of header && subheader -->

         <!-- header nav content -->
         <div class="nav-center">
       <a class="nav-item" href="https://www.facebook.com/xrloaded/">
         <span class="icon">
           <i class="fa fa-facebook"></i>
         </span>
       </a>
       <a class="nav-item" href="https://www.instagram.com/xrloadedapp/">
         <span class="icon">
           <i class="fa fa-instagram"></i>
         </span>
       </a>
         </div>
         <!-- end of header nav content -->
       </div>
     </div>
   </div>
     </section>
   </div>
   <!-- end page header -->


       <!-- page content -->

       <div class="main-content">

           <div class="container">
                   <!-- start of posts -->

               <div class="columns has-text-centered">
               <!-- start of post -->
                   <% @articles.each do |article| %>
                   <div class="column is-4" >

                       <div class="card">

                         <!-- image for post -->
                         <div class="card-image">
                       <figure class="image is-4by3">

                           <%= link_to article.title, article_path(article) %>

                           <% if !article.blogimage.file.nil? %>
                               <%= link_to image_tag(article.blogimage_url(:thumb),:class => "image is-5by3"), article_path(article) %>
                           <% end %>

                       </figure>
                         </div>
                         <!-- end of image for post -->

                         <!-- post header -->
                         <div class="card-content-header">
                       <h4 class="title is-4"><a href="post.html"><%= link_to article.title, article_path(article) %></a></h4>
                       <%= link_to article.description, article_path(article) %>
                         </div>
                         <!-- end of post header -->

                         <!-- post content -->
                         <div class="card-content">
                           <div class="content">
                             <div class="nav-center">
                               <a class="nav-item" href="">
                                 <span class="icon">
                               <i class="fa fa-twitter"></i>
                                 </span>
                               </a>
                               <a class="nav-item" href="">
                                 <span class="icon">
                               <i class="fa fa-facebook"></i>
                                 </span>
                               </a>
                               <a class="nav-item" href="">
                                 <span class="icon">
                               <i class="fa fa-instagram"></i>
                                 </span>
                               </a>

                             </div>
                           </div>
                           <!-- end of post content -->

                       <!-- post footer -->

                       <!-- end of post footer -->
                         </div>

                       </div>



                   </div>
                   <% end %> 


               <!-- end of post -->
               </div>
               <div class="columns has-text-centered">
               <!-- start of post -->
                   <% @secondrow.each do |article| %>
                   <div class="column is-4" >

                       <div class="card">

                         <!-- image for post -->
                         <div class="card-image">
                       <figure class="image is-4by3">
                           <%= link_to article.title, article_path(article) %>

                         <img src="http://placehold.it/700x500" alt="Image">
                       </figure>
                         </div>
                         <!-- end of image for post -->

                         <!-- post header -->
                         <div class="card-content-header">
                       <h4 class="title is-4"><a href="post.html"><%= link_to article.title, article_path(article) %></a></h4>
                       <%= link_to article.description, article_path(article) %>
                         </div>
                         <!-- end of post header -->

                         <!-- post content -->
                         <div class="card-content">
                           <div class="content">
                             <div class="nav-center">
                               <a class="nav-item" href="">
                                 <span class="icon">
                               <i class="fa fa-twitter"></i>
                                 </span>
                               </a>
                               <a class="nav-item" href="">
                                 <span class="icon">
                               <i class="fa fa-facebook"></i>
                                 </span>
                               </a>
                               <a class="nav-item" href="">
                                 <span class="icon">
                               <i class="fa fa-instagram"></i>
                                 </span>
                               </a>

                             </div>
                           </div>
                           <!-- end of post content -->

                       <!-- post footer -->

                       <!-- end of post footer -->
                         </div>

                       </div>



                   </div>
                   <% end %> 


               <!-- end of post -->
               </div>



               <!-- end of posts -->   
           </div>

       </div>
     <!-- pagination -->
     <div class="pagination-style-custom">
   <div class="container has-text-right">
     <a class="button is-button-grey pagination-next">Show More Posts</a>
   </div>
     </div>
     <!-- end of pagination -->
   </div>
   <!-- end of page content -->

Файл схемы:

ActiveRecord::Schema.define(version: 20200112211550) do

  create_table "ahoy_events", force: :cascade do |t|
    t.integer "visit_id"
    t.integer "user_id"
    t.string "name"
    t.text "properties"
    t.datetime "time"
    t.index ["name", "time"], name: "index_ahoy_events_on_name_and_time"
    t.index ["user_id"], name: "index_ahoy_events_on_user_id"
    t.index ["visit_id"], name: "index_ahoy_events_on_visit_id"
  end

  create_table "ahoy_visits", force: :cascade do |t|
    t.string "visit_token"
    t.string "visitor_token"
    t.integer "user_id"
    t.string "ip"
    t.text "user_agent"
    t.text "referrer"
    t.string "referring_domain"
    t.text "landing_page"
    t.string "browser"
    t.string "os"
    t.string "device_type"
    t.string "country"
    t.string "region"
    t.string "city"
    t.float "latitude"
    t.float "longitude"
    t.string "utm_source"
    t.string "utm_medium"
    t.string "utm_term"
    t.string "utm_content"
    t.string "utm_campaign"
    t.string "app_version"
    t.string "os_version"
    t.string "platform"
    t.datetime "started_at"
    t.index ["user_id"], name: "index_ahoy_visits_on_user_id"
    t.index ["visit_token"], name: "index_ahoy_visits_on_visit_token", unique: true
  end

  create_table "articles", force: :cascade do |t|
    t.string "title"
    t.text "description"
    t.string "blogimage"
  end

  create_table "jobs", force: :cascade do |t|
    t.string "title"
    t.text "description"
    t.string "url"
    t.string "job_type"
    t.string "location"
    t.string "job_author"
    t.boolean "remote_ok"
    t.string "apply_url"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.string "avatar"
    t.integer "user_id"
  end

  create_table "users", force: :cascade do |t|
    t.string "email", default: "", null: false
    t.string "encrypted_password", default: "", null: false
    t.string "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer "sign_in_count", default: 0, null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string "current_sign_in_ip"
    t.string "last_sign_in_ip"
    t.string "name"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
    t.string "stripe_id"
    t.string "card_brand"
    t.string "card_last4"
    t.string "card_exp_month"
    t.string "card_exp_year"
    t.datetime "expires_at"
    t.boolean "admin"
    t.index ["email"], name: "index_users_on_email", unique: true
    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
  end

end

Файл маршрутов:

require 'sidekiq/web'

Rails.application.routes.draw do
  mount RailsAdmin::Engine => '/admin', as: 'rails_admin'
  resources :jobs do
    get :search #creates new path for search feature
  end

  resources :articles
  devise_for :users
  root to: 'jobs#index'
  get '/info' => 'pages#info'
  get '/blog' => 'articles#index'
  get '/privacy' => 'pages#privacy'
  # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
  get '/emailsignup'  => 'emailapi#index'
  post '/emailapi/subscribe'=> 'emailapi#subscribe'



end