Finished CRUD for Article

app/controllers/articles_controller.rb

@@ -0,0 +1,84 @@
+class ArticlesController < ApplicationController
+  before_action :set_article, only: [:show, :edit, :update, :destroy]
+  before_action :authenticate_user!, expect: [:index,:show]
+  # GET /articles
+  # GET /articles.json
+  def index
+    @articles = Article.all
+  end
+
+  # GET /articles/1
+  # GET /articles/1.json
+  def show
+  end
+
+  # GET /articles/new
+  def new
+    @article = Article.new
+  end
+
+  # GET /articles/1/edit
+  def edit
+  end
+
+  # POST /articles
+  # POST /articles.json
+  def create
+    @article = current_user.articles.build(article_params)
+    respond_to do |format|
+      if @article.save
+        if params[:images].present?
+          params[:images].each { |image|
+            @article.pictures.create(image: image)
+          }
+        end
+        format.html { redirect_to @article, notice: I18n.t('controller.create',model: 'Article') }
+        format.json { render :show, status: :created, location: @article }
+      else
+        format.html { render :new }
+        format.json { render json: @article.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /articles/1
+  # PATCH/PUT /articles/1.json
+  def update
+    respond_to do |format|
+      if @article.update(article_params)
+        if params[:images].present?
+          @article.pictures.destroy_all
+          params[:images].each { |image|
+            @article.pictures.create(image: image)
+          }
+        end  
+        format.html { redirect_to @article, notice: I18n.t('controller.update',model: 'Article') }
+        format.json { render :show, status: :ok, location: @article }
+      else
+        format.html { render :edit }
+        format.json { render json: @article.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /articles/1
+  # DELETE /articles/1.json
+  def destroy
+    @article.destroy
+    respond_to do |format|
+      format.html { redirect_to articles_url, notice: I18n.t('controller.destroy',model: 'Article') }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_article
+      @article = Article.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def article_params
+      params.require(:article).permit(:title,:s_description,:l_description,pictures_attributes: [:image])
+    end
+end

app/helpers/articles_helper.rb

@@ -0,0 +1,2 @@
+module ArticlesHelper
+end

app/models/article.rb

@@ -3,4 +3,8 @@ class Article < ApplicationRecord
   has_many :tags, :dependent => :destroy
   has_many :pictures, as: :imageable
   has_and_belongs_to_many :catgories
+  accepts_nested_attributes_for :pictures
+
+  validates :title, presence: true
+  validates :s_description, presence: true
 end

app/views/articles/_article.json.jbuilder

@@ -0,0 +1,2 @@
+json.extract! article, :id, :created_at, :updated_at
+json.url article_url(article, format: :json)

app/views/articles/_form.html.erb

@@ -0,0 +1,36 @@
+<%= form_for article, :html => { :class => 'form-horizontal', multipart: true } do |f| %>
+  <% if article.errors.any? %>
+    <div id="error_explanation">
+      <h2><%= pluralize(article.errors.count, "error") %> prohibited this article from being saved:</h2>
+
+      <ul>
+      <% article.errors.full_messages.each do |message| %>
+        <li><%= message %></li>
+      <% end %>
+      </ul>
+    </div>
+  <% end %>
+  <div class="field">
+    <%= f.label :title %><br />
+    <%= f.text_field :title, autofocus: true %>
+  </div>
+
+  <div class="field">
+    <%= f.label :sort_description %><br />
+    <%= f.text_field :s_description, autofocus: true %>
+  </div>
+
+  <div class="field">
+    <%= f.label :long_description %><br />
+    <%= f.text_area :l_description, autofocus: true %>
+  </div>
+
+  <div class="field">
+    <%= f.label :article_images %><br />
+    <%= file_field_tag "images[]", type: :file,accept: 'image/png,image/gif,image/jpeg', multiple: true %>
+  </div>
+  <br>
+  <div class="actions">
+    <%= f.submit %>
+  </div>
+<% end %>

app/views/articles/edit.html.erb

@@ -0,0 +1,6 @@
+<h1>Editing Article</h1>
+
+<%= render 'form', article: @article %>
+
+<%= link_to 'Show', @article %> |
+<%= link_to 'Back', articles_path %>

app/views/articles/index.html.erb

@@ -0,0 +1,31 @@
+<h1>Articles</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th> Title </th>
+      <th> Sort Description </th>
+      <th> Long Description </th>
+      <th> Author </th>
+      <th colspan="3"> Action </th>
+    </tr>
+  </thead>
+
+  <tbody>
+    <% @articles.each do |article| %>
+      <tr>
+        <td><%= article.title %></td>
+        <td><%= article.s_description %></td>
+        <td><%= article.l_description %></td>
+        <td><%= article.user.name %></td>
+        <td><%= link_to 'Show', article %></td>
+        <td><%= link_to 'Edit', edit_article_path(article) %></td>
+        <td><%= link_to 'Destroy', article, method: :delete, data: { confirm: 'Are you sure?' } %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
+
+<br>
+
+<%= link_to 'New Article', new_article_path %>

app/views/articles/index.json.jbuilder

@@ -0,0 +1 @@
+json.array! @articles, partial: 'articles/article', as: :article

app/views/articles/new.html.erb

@@ -0,0 +1,5 @@
+<h1>New Article</h1>
+
+<%= render 'form', article: @article %>
+
+<%= link_to 'Back', articles_path %>

app/views/articles/show.html.erb

@@ -0,0 +1,10 @@
+
+<h3><%= @article.title %></h3>
+<hr><br>
+<p><%= @article.s_description %></p>
+<p><%= @article.l_description %></p>
+<p><%= @article.user.name %></p>
+<p>Published: <%= time_ago_in_words(@article.created_at) %> ago</p>
+<br>
+<%= link_to 'Edit', edit_article_path(@article) %> |
+<%= link_to 'Back', articles_path %>

app/views/articles/show.json.jbuilder

@@ -0,0 +1 @@
+json.partial! "articles/article", article: @article

config/locales/en.yml

@@ -20,4 +20,7 @@
 # available at http://guides.rubyonrails.org/i18n.html.
 
 en:
-  hello: "Hello world"
+  controller:
+    create: '%{model} was successfully created.'
+    update: '%{model} was successfully updated.'
+    destroy: '%{model} was successfully destroyed.'

config/routes.rb

@@ -3,4 +3,5 @@
   devise_for :users, controllers: {registrations: "users/registrations"}
   get "*path" => redirect("/")
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
+  resources :articles
 end

db/migrate/20160921062609_update_column_to_article.rb

@@ -0,0 +1,11 @@
+class UpdateColumnToArticle < ActiveRecord::Migration[5.0]
+  def up
+    change_column :articles, :l_description, :text
+    remove_reference(:articles, :category, index: true, foreign_key: true)
+  end
+
+  def down
+    change_column :articles, :l_description, :string
+    add_reference(:articles, :category, index: true, foreign_key: true)
+  end
+end