[Edison Qu] Ruby on rails Encyclopedia

.gitignore

@@ -1,3 +1,5 @@
+.history
+
 # See https://help.github.com/articles/ignoring-files for more about ignoring files.
 #
 # If you find yourself ignoring temporary files generated by your text editor

Dockerfile

@@ -1,7 +1,7 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=2.7.6
+ARG RUBY_VERSION=3.2.3
 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
 
 # Rails app lives here
@@ -21,6 +21,8 @@ FROM base as build
 RUN apt-get update -qq && \
     apt-get install --no-install-recommends -y build-essential git libvips pkg-config
 
+RUN gem install bundler:2.5.5
+
 # Install application gems
 COPY Gemfile Gemfile.lock ./
 RUN bundle install && \

Gemfile

@@ -66,3 +66,7 @@ group :test do
   gem "selenium-webdriver"
   gem "webdrivers"
 end
+
+# group :test do
+#   gem 'database_cleaner'
+# end

Gemfile.lock

@@ -95,6 +95,12 @@ GEM
     concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
     crass (1.0.6)
+    database_cleaner (2.0.2)
+      database_cleaner-active_record (>= 2, < 3)
+    database_cleaner-active_record (2.1.0)
+      activerecord (>= 5.a)
+      database_cleaner-core (~> 2.0.0)
+    database_cleaner-core (2.0.1)
     date (3.3.4)
     debug (1.9.1)
       irb (~> 1.10)
@@ -261,6 +267,7 @@ PLATFORMS
 DEPENDENCIES
   bootsnap
   capybara
+  database_cleaner
   debug
   importmap-rails
   jbuilder

app/controllers/articles_controller.rb

@@ -0,0 +1,57 @@
+class ArticlesController < ApplicationController
+  # Displays a list of all articles
+  def index
+    @articles = Article.all
+  end
+
+  # Shows details of a specific article identified by params[:id]
+  def show
+    @article = Article.find(params[:id])
+  end
+
+  # Prepares a new, unsaved article for creation
+  def new
+    @article = Article.new
+  end
+
+  # Creates a new article from parameters and redirects on success
+  # On failure (e.g., validation errors), it re-renders the 'new' view for correction
+  def create
+    @article = Article.new(article_params)
+    if @article.save
+      redirect_to @article
+    else
+      render 'new'
+    end
+  end
+
+  # Fetches the article for editing
+  def edit
+    @article = Article.find(params[:id])
+  end
+
+  # Updates the article and redirects on success
+  # On failure, re-renders the 'edit' view for correction
+  def update
+    @article = Article.find(params[:id])
+    if @article.update(article_params)
+      redirect_to @article
+    else
+      render 'edit'
+    end
+  end
+
+  # Deletes the article and redirects to the list of articles
+  def destroy
+    @article = Article.find(params[:id])
+    @article.destroy
+    redirect_to articles_path
+  end
+
+  private
+
+  # Strong parameters method for creating/updating articles
+  def article_params
+    params.require(:article).permit(:title, :content, :author, :date)
+  end
+end

app/models/article.rb

@@ -0,0 +1,12 @@
+class Article < ApplicationRecord
+    # Validations
+    validates :title, presence: true
+    validates :content, presence: true
+    # validates :author, presence: true
+
+
+    # search
+    def self.search(query)
+      where("title LIKE ? OR content LIKE ?", "%#{query}%", "%#{query}%")
+    end
+  end

app/views/articles/_form_errors.html.erb

@@ -0,0 +1,10 @@
+<% if object.errors.any? %>
+  <div id="error_explanation">
+    <h2><%= pluralize(object.errors.count, "error") %> prohibited this object from being saved:</h2>
+    <ul>
+      <% object.errors.full_messages.each do |message| %>
+        <li><%= message %></li>
+      <% end %>
+    </ul>
+  </div>
+<% end %>

app/views/articles/edit.html.erb

@@ -0,0 +1,22 @@
+<h1>Edit Article</h1>
+
+<%= form_with(model: @article, local: true) do |form| %>
+
+  <%= render 'form_errors', object: @article %>
+
+  <%= form.label :title %>
+  <%= form.text_field :title %>
+
+  <%= form.label :content %>
+  <%= form.text_area :content %>
+
+  <%= form.label :author %>
+  <%= form.text_field :author %>
+
+  <%= form.label :date %>
+  <%= form.date_select :date %>
+
+  <%= form.submit %>
+<% end %>
+
+<%= link_to 'Back', articles_path %>

app/views/articles/index.html.erb

@@ -0,0 +1,17 @@
+
+<h1>Articles</h1>
+
+<!-- Link to new article -->
+<%= link_to 'New Article', new_article_path %>
+
+<ul>
+  <% @articles.each do |article| %>
+    <li>
+      <h2><%= link_to article.title, article_path(article) %></h2>
+      <p><%= truncate(article.content, length: 100) %></p>
+      <p>By: <%= article.author %> | Published on: <%= article.date %></p>
+      <%= link_to 'Edit', edit_article_path(article) %> |
+      <%= link_to 'Delete', article_path(article), method: :delete, data: { confirm: 'Are you sure?' } %>
+    </li>
+  <% end %>
+</ul>

app/views/articles/new.html.erb

@@ -0,0 +1,32 @@
+<h1>New Article</h1>
+
+<%= form_with model: @article, local: true do |form| %>
+
+  <% 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 %>
+
+  <%= form.label :title %>
+  <%= form.text_field :title, id: :article_title %>
+
+  <%= form.label :content %>
+  <%= form.text_area :content, id: :article_content %>
+
+  <%= form.label :author %>
+  <%= form.text_field :author, id: :article_author %>
+
+  <%= form.label :date %>
+  <%= form.date_select :date, id: :article_date %>
+
+  <%= form.submit %>
+
+<%= link_to 'Back', articles_path %>
+
+<% end %>

app/views/articles/show.html.erb

@@ -0,0 +1,20 @@
+<h1><%= @article.title %></h1>
+
+<p>
+  <strong>Author:</strong>
+  <%= @article.author %>
+</p>
+
+<p>
+  <strong>Date:</strong>
+  <%= @article.date %>
+</p>
+
+<p>
+  <strong>Content:</strong>
+  <%= @article.content %>
+</p>
+
+<!-- Links for editing and going back -->
+<%= link_to 'Edit', edit_article_path(@article) %> |
+<%= link_to 'Back', articles_path %>

config/routes.rb

@@ -4,6 +4,7 @@
   # Reveal health status on /up that returns 200 if the app boots with no exceptions, otherwise 500.
   # Can be used by load balancers and uptime monitors to verify that the app is live.
   get "up" => "rails/health#show", as: :rails_health_check
+  resources :articles
 
   # Defines the root path route ("/")
   # root "posts#index"

db/migrate/20240130033010_create_articles.rb

@@ -0,0 +1,12 @@
+class CreateArticles < ActiveRecord::Migration[7.1]
+  def change
+    create_table :articles do |t|
+      t.string :title
+      t.text :content
+      t.string :author
+      t.datetime :date
+
+      t.timestamps
+    end
+  end
+end

test/fixtures/articles.yml

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

test/helpers/test_helper.rb

@@ -0,0 +1 @@
+# test/test_helper.rb