Users can like posts feature (wip)

.rubocop.yml

@@ -0,0 +1,4 @@
+AllCops:
+  Exclude:
+    - 'db/schema.rb'
+    - 'db/seeds.rb'

Gemfile

@@ -1,7 +1,7 @@
 source "https://rubygems.org"
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby "3.1.2"
+ruby "3.3.0"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "~> 7.0.8"
@@ -63,6 +63,7 @@ group :development, :test do
   gem "rspec-rails"
   gem "pry-rails"
   gem "shoulda-matchers"
+  gem 'solargraph', group: :development
 end
 
 group :development do

Gemfile.lock

@@ -68,7 +68,10 @@ GEM
       tzinfo (~> 2.0)
     addressable (2.8.5)
       public_suffix (>= 2.0.2, < 6.0)
+    ast (2.4.2)
+    backport (1.2.0)
     bcrypt (3.1.19)
+    benchmark (0.3.0)
     bindex (0.8.1)
     bootsnap (1.16.0)
       msgpack (~> 1.2)
@@ -98,6 +101,7 @@ GEM
       responders
       warden (~> 1.2.3)
     diff-lcs (1.5.0)
+    e2mmap (0.1.0)
     erubi (1.12.0)
     factory_bot (6.2.1)
       activesupport (>= 5.0.0)
@@ -134,11 +138,18 @@ GEM
     io-console (0.6.0)
     irb (1.7.4)
       reline (>= 0.3.6)
+    jaro_winkler (1.5.6)
     jbuilder (2.11.5)
       actionview (>= 5.0.0)
       activesupport (>= 5.0.0)
     jsbundling-rails (1.2.1)
       railties (>= 6.0.0)
+    json (2.7.1)
+    kramdown (2.4.0)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    language_server-protocol (3.17.0.3)
     listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
@@ -169,12 +180,18 @@ GEM
     net-smtp (0.4.0)
       net-protocol
     nio4r (2.5.9)
-    nokogiri (1.15.4-x86_64-linux)
+    nokogiri (1.16.2-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.16.2-x86_64-linux)
       racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
     orm_adapter (0.5.0)
+    parallel (1.24.0)
+    parser (3.3.0.4)
+      ast (~> 2.4.1)
+      racc
     pg (1.5.4)
     pry (0.14.2)
       coderay (~> 1.1)
@@ -216,17 +233,21 @@ GEM
       rake (>= 12.2)
       thor (~> 1.0)
       zeitwerk (~> 2.5)
+    rainbow (3.1.1)
     rake (13.0.6)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
+    rbs (2.8.4)
     redis (4.8.1)
     regexp_parser (2.8.1)
     reline (0.3.9)
       io-console (~> 0.5)
     responders (3.1.0)
       actionpack (>= 5.2)
       railties (>= 5.2)
+    reverse_markdown (2.1.1)
+      nokogiri
     rexml (3.2.6)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
@@ -249,6 +270,20 @@ GEM
       rspec-mocks (~> 3.12)
       rspec-support (~> 3.12)
     rspec-support (3.12.1)
+    rubocop (1.60.0)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.3.0.2)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.30.0)
+      parser (>= 3.2.1.0)
+    ruby-progressbar (1.13.0)
     ruby-vips (2.2.0)
       ffi (~> 1.12)
     rubyzip (2.3.2)
@@ -262,6 +297,22 @@ GEM
     simple_form (5.2.0)
       actionpack (>= 5.2)
       activemodel (>= 5.2)
+    solargraph (0.50.0)
+      backport (~> 1.2)
+      benchmark
+      bundler (~> 2.0)
+      diff-lcs (~> 1.4)
+      e2mmap
+      jaro_winkler (~> 1.5)
+      kramdown (~> 2.3)
+      kramdown-parser-gfm (~> 1.1)
+      parser (~> 3.0)
+      rbs (~> 2.0)
+      reverse_markdown (~> 2.0)
+      rubocop (~> 1.38)
+      thor (~> 1.0)
+      tilt (~> 2.0)
+      yard (~> 0.9, >= 0.9.24)
     sprockets (4.2.1)
       concurrent-ruby (~> 1.0)
       rack (>= 2.2.4, < 4)
@@ -272,13 +323,15 @@ GEM
     stimulus-rails (1.2.2)
       railties (>= 6.0.0)
     thor (1.2.2)
+    tilt (2.3.0)
     timeout (0.4.0)
     turbo-rails (1.4.0)
       actionpack (>= 6.0.0)
       activejob (>= 6.0.0)
       railties (>= 6.0.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
+    unicode-display_width (2.5.0)
     warden (1.2.9)
       rack (>= 2.0.9)
     web-console (4.2.1)
@@ -292,9 +345,11 @@ GEM
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
+    yard (0.9.36)
     zeitwerk (2.6.12)
 
 PLATFORMS
+  arm64-darwin-23
   x86_64-linux
 
 DEPENDENCIES
@@ -322,14 +377,15 @@ DEPENDENCIES
   selenium-webdriver
   shoulda-matchers
   simple_form
+  solargraph
   sprockets-rails
   stimulus-rails
   turbo-rails
   tzinfo-data
   web-console
 
 RUBY VERSION
-   ruby 3.1.2p20
+   ruby 3.3.0p0
 
 BUNDLED WITH
    2.4.19

app/controllers/application_controller.rb

@@ -1,10 +1,16 @@
-require "application_responder"
+require 'application_responder'
 
 class ApplicationController < ActionController::Base
   self.responder = ApplicationResponder
   respond_to :html
 
-  def after_sign_in_path_for(resource)
+  def after_sign_in_path_for(_resource)
     posts_path
   end
+
+  private
+
+  def load_friend_requests
+    @friend_requests = FriendRequest.where(receiver_id: current_user, status: 'pending')
+  end
 end

app/controllers/likes_controller.rb

@@ -0,0 +1,39 @@
+class LikesController < ApplicationController
+  before_action :set_post, only: %i[create destroy]
+
+  def create
+    @like = current_user.likes.find_or_initialize_by(post_id: params[:post_id])
+    if @like.new_record?
+      if @like.save
+        flash[:notice] = 'Post liked.'
+
+      else
+        flash[:alert] = 'Unable to like the post.'
+      end
+    else
+      flash[:alert] = 'You have already liked this post.'
+    end
+    redirect_to posts_path
+  end
+
+  def destroy
+    @like = current_user.likes.find_by(post: @post)
+    if @like
+      @like.destroy
+      flash[:notice] = 'Like removed.'
+    else
+      flash[:alert] = 'Unable to remove the like.'
+    end
+    redirect_to posts_path
+  end
+
+  private
+
+  def set_post
+    @post = Post.find(params[:post_id])
+  end
+
+  def post_params
+    params.require(:post).permit(:title, :content)
+  end
+end

app/controllers/posts_controller.rb

@@ -1,21 +1,23 @@
 class PostsController < ApplicationController
   before_action :authenticate_user!
+  include PostsHelper
 
   def new
     @friend_requests = FriendRequest.where(receiver_id: current_user, status: 'pending')
     @post = Post.new
-  end  
+  end
 
   def index
     @friend_requests = FriendRequest.where(receiver_id: current_user, status: 'pending')
     @posts = PostsService.new(current_user).friends_and_own_posts
+    @likes = current_user.likes.where(post_id: @posts.pluck(:id))
   end
-  
+
   def create
     @friend_requests = FriendRequest.where(receiver_id: current_user, status: 'pending')
     @post = current_user.posts.build(post_params)
     if @post.save
-      flash[:notice] = "Post created successfully"
+      flash[:notice] = 'Post created successfully'
       redirect_to posts_path
     else
       flash.now[:alert] = 'Post creation failed.'
@@ -24,15 +26,15 @@ def create
 
   def edit
     @post = Post.find(params[:id])
-  end  
+  end
 
   def destroy
     @post = current_user.posts.find_by(id: params[:id])
     if @post
       @post.destroy
-      flash[:notice] = "Post deleted successfully"
+      flash[:notice] = 'Post deleted successfully'
     else
-      flash[:alert] = "Post not found"
+      flash[:alert] = 'Post not found'
     end
     redirect_to posts_path
   end

app/helpers/posts_helper.rb

@@ -1,2 +1,9 @@
 module PostsHelper
+  def liked_by?(post, _user_id)
+    post.likes.exists?(user: current_user)
+  end
+
+  def current_user_like(post)
+    post.likes.find_by(user: current_user)
+  end
 end

app/views/posts/_like_button.html.erb

@@ -0,0 +1,15 @@
+<% if liked_by?(post, current_user) %>
+  <%= form_with model: current_user_like(post),
+    url: post_like_path(post, current_user_like(post)),
+    method: :delete, class: 'like-form' do |f| %>
+    <%= f.submit 'Unlike', class: 'btn btn-danger unlike-button' %>
+  <% end %>
+<% else %>
+  <%= form_with model: Like.new,
+    url: post_likes_path(post),
+    method: :post,
+    class: 'like-form' do |f| %>
+    <%= f.hidden_field :post_id, value: post.id %>
+    <%= f.submit 'Like', class: 'btn btn-primary like-button' %>
+  <% end %>
+<% end %>

app/views/posts/index.html.erb

@@ -1,22 +1,17 @@
 <div class="trix-content">
   <h1>Timeline</h1>
+  <%= link_to "New Post", new_post_path, class: "btn btn-primary" %>
   <% if @posts.any? %>
     <% @posts.each do |post| %>
       <div class="post">
         <h2><%= post.title %></h2>
         <p><%= post.content %></p>
-        <p> This post has <%= post.likes.count %>
-          <% if %>
-            <% post.likes.count == 1 %>
-            <p>like!<p/>
-            <% else %>
-              <p>  likes! </p>
-            <% end %>
-            <p>Posted by: <%= post.user.name %></p>
-          </div>
-        <% end %>
-      <% else %>
-        <p>No posts to display.</p>
-      <% end %>
-      <%= link_to "New Post", new_post_path, class: "btn btn-primary" %>
-    </div>
+        <p>This post has <%= pluralize(post.likes.count, "like") %>! </p>
+        <%= render "like_button", post: post %>
+        <p>Posted by: <%= post.user.name %></p>
+      </div>
+    <% end %>
+  <% else %>
+    <p>No posts to display.</p>
+  <% end %>
+</div>

app/views/shared/_flash.html.erb

@@ -1,10 +1,5 @@
-<% if flash[:notice] %>
-  <div class="alert alert-info mt-4" role="alert">
-    <%= flash[:notice] %>
-  </div>
-<% end %>
-<% if flash[:alert] %>
-  <div class="alert alert-info mt-4" role="alert">
-    <%= flash[:alert] %>
+<% flash.each do |flash_type, message| %>
+  <div class="alert alert-info mt-4">
+    <%= message %>
   </div>
 <% end %>

config/routes.rb

@@ -1,12 +1,14 @@
 Rails.application.routes.draw do
   get 'friend_requests/create'
   get 'friends/index'
-  root "pages#home"
+  root 'pages#home'
   devise_for :users
-  resources :posts
+  resources :posts do
+    resources :likes, only: %i[create destroy]
+  end
   resources :notifications, only: [:index]
-  resources :friendship_acknowledgements, only: [:create, :destroy]
-  resources :friends, only: [:index, :destroy]
-  resources :friendships, only: [:create, :destroy]
-  resources :friend_requests, only: [:create, :destroy]
+  resources :friendship_acknowledgements, only: %i[create destroy]
+  resources :friends, only: %i[index destroy]
+  resources :friendships, only: %i[create destroy]
+  resources :friend_requests, only: %i[create destroy]
 end