Feature: Encyclopedia CRUD Actions Implementation [Emaan Khan]

app/controllers/articles_controller.rb

@@ -0,0 +1,68 @@
+# The ArticlesController class is responsible for handling requests related to articles.
+class ArticlesController < ApplicationController
+    # Retrieves all articles from the database and assigns them to the @articles instance variable.
+    def index 
+        @articles = Article.all
+    end
+
+    # Retrieves a specific article from the database based on the provided ID and assigns it to the @article instance variable.
+    def show 
+        @article = Article.find(params[:id])
+    end
+
+    # Initializes a new instance of the Article model and assigns it to the @article instance variable.
+    def new 
+        @article = Article.new
+    end
+
+    # Creates a new article with the provided parameters and saves it to the database.
+    # If the article is successfully saved, redirects to the show page of the created article.
+    # Otherwise, renders the new page with a status of unprocessable entity.
+    def create 
+        @article = Article.create(article_params.merge(:date => Date.today))
+
+        if @article.save
+            redirect_to @article
+        else
+            render :new, status: :unprocessable_entity
+        end
+    end
+
+    # Updates an existing article with the provided parameters and saves it to the database.
+    # If the article is successfully updated, redirects to the show page of the updated article.
+    # Otherwise, renders the edit page with a status of unprocessable entity.
+    def update
+        @article = Article.find(params[:id])
+
+        if @article.update(article_params.merge(:date => Date.today))
+            redirect_to @article
+        else
+            render :edit, status: :unprocessable_entity
+        end
+    end
+
+    # Retrieves an existing article from the database based on the provided ID and assigns it to the @article instance variable.
+    def edit 
+        @article = Article.find(params[:id])
+    end
+
+    # Deletes an existing article from the database based on the provided ID.
+    # After deletion, redirects to the root path with a status of see other.
+    def destroy 
+        @article = Article.find(params[:id])
+        @article.destroy
+
+        redirect_to root_path, status: :see_other
+    end
+
+    # Searches for articles based on the provided query and assigns the result to the @article instance variable.
+    def search 
+        @article = Article.search(params[:query])
+    end
+
+    private
+        # Defines the permitted parameters for creating or updating an article.
+        def article_params
+            params.require(:article).permit(:title, :content, :author)
+        end
+end

app/helpers/articles_helper.rb

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

app/models/article.rb

@@ -0,0 +1,16 @@
+# The Article model represents an article in the application.
+class Article < ApplicationRecord
+    # Validates that the title is present.
+    validates :title, presence: true
+
+    # Validates that the content is present.
+    validates :content, presence: true
+
+    # Validates the uniqueness of the title.
+    validates_uniqueness_of :title
+
+    # Searches for articles based on a query string.
+    def self.search(query)
+        @article = self.where("title LIKE ? or content LIKE ?", "%#{query}%",  "%#{query}%")
+    end
+end

app/views/articles/edit.html.erb

@@ -0,0 +1,28 @@
+<h1>Edit Article</h1>
+
+<%= form_with model: @article, local: true do |form| %>
+  <p>
+    <%= form.label :title %><br>
+    <%= form.text_field :title %>
+  </p>
+
+  <p>
+    <%= form.label :content %><br>
+    <%= form.text_area :content %>
+  </p>
+
+  <p>
+    <%= form.label :author %><br>
+    <%= form.text_field :author %>
+  </p>
+
+  <p>
+    <%= form.label :date %><br>
+    <%= form.date_select :date %>
+  </p>
+
+  <p>
+    <%= form.submit %>
+  </p>
+<% end %>
+<%= link_to 'Back to Article', article_path(@article) %> | <%= link_to 'Back to Articles', articles_path %>

app/views/articles/new.html.erb

@@ -0,0 +1,28 @@
+<h1>New Article</h1>
+
+<%= form_with model: @article, local: true do |form| %>
+  <p>
+    <%= form.label :title %><br>
+    <%= form.text_field :title %>
+  </p>
+
+  <p>
+    <%= form.label :content %><br>
+    <%= form.text_area :content %>
+  </p>
+
+  <p>
+    <%= form.label :author %><br>
+    <%= form.text_field :author %>
+  </p>
+
+  <p>
+    <%= form.label :date %><br>
+    <%= form.date_select :date %>
+  </p>
+
+  <p>
+    <%= form.submit %>
+  </p>
+<% end %>
+<%= link_to 'Back to Articles', articles_path %>

app/views/articles/show.html.erb

@@ -0,0 +1,14 @@
+<h1><%= @article.title %></h1>
+
+<p>
+  <strong>Author:</strong>
+  <%= @article.author %>
+</p>
+
+<p>
+  <strong>Content:</strong>
+  <%= @article.content %>
+</p>
+
+<%= link_to 'Edit', edit_article_path(@article) %> |
+<%= link_to 'Back to Articles', articles_path %>

config/routes.rb

@@ -7,4 +7,9 @@
 
   # Defines the root path route ("/")
   # root "posts#index"
+
+  root "articles#index"
+  get 'articles', to: 'articles#index'
+  get 'search', to: 'articles#search'
+  resources :articles
 end

db/migrate/20240125004458_create_articles.rb

@@ -0,0 +1,11 @@
+class CreateArticles < ActiveRecord::Migration[7.1]
+  def change
+    create_table :articles do |t|
+      t.string :title
+      t.string :content
+      t.string :author
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20240130033615_add_date_to_articles.rb

@@ -0,0 +1,5 @@
+class AddDateToArticles < ActiveRecord::Migration[7.1]
+  def change
+    add_column :articles, :date, :date
+  end
+end

db/seeds.rb

@@ -7,3 +7,10 @@
 #   ["Action", "Comedy", "Drama", "Horror"].each do |genre_name|
 #     MovieGenre.find_or_create_by!(name: genre_name)
 #   end
+
+# Article.destroy_all
+
+# Article.create(title: 'Sample Article', content: 'Lorem ipsum dolor sit amet.', author: 'John Doe')
+# Article.create(title: 'Another Article', content: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.', author: 'Jane Smith')
+# Article.create(title: 'Third Article', content: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.', author: 'John Doe')
+# Article.create(title: 'Fourth Article', content: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.')

test/controllers/articles_controller_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class ArticlesControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end

test/fixtures/articles.yml

@@ -0,0 +1 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html

test/models/article_test.rb

@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class ArticleTest < ActiveSupport::TestCase
-  test 'starts with no articles' do
+  test 'starts with no articles' do 
     assert_equal 0, Article.count
   end