Added Tagging system with autocomplete feature

Gemfile

@@ -7,7 +7,10 @@ gem 'jdbc-mysql',      '5.1.28',   :platform => :jruby
 # gem 'flying-sphinx',   '1.2.0'
 # Named scopes for PostgreSQL's full text search
 gem 'pg_search'
-
+#
+gem 'acts-as-taggable-on'
+# Implementing autocomplete
+gem "selectize-rails"
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '4.1.8'
 

Gemfile.lock

@@ -27,6 +27,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.1)
       tzinfo (~> 1.1)
+    acts-as-taggable-on (4.0.0)
+      activerecord (>= 4.0)
     addressable (2.4.0)
     ambry (1.0.0)
     arel (5.0.1.20140414130214)
@@ -228,6 +230,7 @@ GEM
     sdoc (0.4.1)
       json (~> 1.7, >= 1.7.7)
       rdoc (~> 4.0)
+    selectize-rails (0.12.4)
     simplecov (0.12.0)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)
@@ -275,6 +278,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  acts-as-taggable-on
   bootstrap-sass (~> 3.3.6)
   cancancan (~> 1.10)
   capistrano (~> 3.2.0)
@@ -305,6 +309,7 @@ DEPENDENCIES
   rubocop
   sass-rails (>= 3.2)
   sdoc (~> 0.4.0)
+  selectize-rails
   simplecov
   spring
   truncate_html (~> 0.9.3)
@@ -315,4 +320,4 @@ DEPENDENCIES
   wysiwyg-rails
 
 BUNDLED WITH
-   1.13.7
+   1.14.2

app/assets/javascripts/application.js

@@ -11,6 +11,7 @@
 // about supported directives.
 //
 //= require jquery
+//= require selectize
 //= require jquery.turbolinks
 //= require jquery_ujs
 //= require turbolinks

app/assets/stylesheets/application.css.scss

@@ -11,6 +11,8 @@
  * file per style scope.
  *
  *= require_self
+ *= require selectize
+ *= require selectize.default
  *= require froala_editor.min.css
  *= require froala_style.min.css
  *= require plugins/char_counter.min.css

app/controllers/new_threads_controller.rb

@@ -9,8 +9,12 @@ def index
   end
 
   def list
-    @new_threads = NewThread.paginate(page: params[:page], per_page: 10)
-                            .order('id DESC')
+    if params[:tag]
+      @new_threads = NewThread.tagged_with(params[:tag])
+    else
+      @new_threads = NewThread.paginate(page: params[:page], per_page: 10)
+                              .order('id DESC')
+    end
   end
 
   def search
@@ -28,7 +32,7 @@ def show
     # the request path will not match the new_thread_path, and we should do
     # a 301 redirect that uses the current friendly id.
     if request.path != new_thread_path(@new_thread)
-      return redirect_to @new_thread, status: :moved_permanently
+      redirect_to @new_thread, status: :moved_permanently
     end
   end
 
@@ -107,7 +111,8 @@ def destroy
   # Never trust parameters from the scary internet,
   # only allow the white list through.
   def new_thread_params
-    params.require(:new_thread).permit(:title, :description, :user_id)
+    params.require(:new_thread).permit(:title, :description, :user_id,
+                                       :tag_list)
   end
 
   def friendly_url

app/models/new_thread.rb

@@ -1,4 +1,6 @@
 class NewThread < ActiveRecord::Base
+  acts_as_taggable # Alias for acts_as_taggable_on :tags
+
   extend FriendlyId
   friendly_id :title, use: [:slugged, :history]
 

app/views/new_threads/_form2.html.erb

@@ -19,10 +19,29 @@
   <div class='form-group'>
     <div class='col-xs-12'><%= f.text_area :description, rows: '20', class: 'form-control', id: 'edit' %></div>
   </div>
-
+
+<div class="form-group">
+  <%= f.label :tag_list, "Tags (separated by commas)" , class: 'col-xs-2 control-label'%>
+  <div class='col-xs-11'><%= f.text_field :tag_list, id: 'tags'%></div>
+</div>
+
   <%= f.hidden_field :user_id, :value => current_user.id %>
 
   <div class='form-group'>
     <div class='col-xs-3'><%= f.submit (action_name == 'new' ? 'Post' : 'Update'), class: 'btn btn-primary btn-lg' %></div>
   </div>
 <% end %>
+
+<script>
+$('#tags').selectize({
+    plugins: ['remove_button'],
+    delimiter: ',',
+    persist: false,
+    create: function(input) {
+        return {
+            value: input,
+            text: input
+        }
+    }
+});
+</script>

app/views/new_threads/list.html.erb

@@ -22,6 +22,11 @@
               <p><%= truncate_html(new_thread.description.html_safe) %> (<%= link_to "Read more", new_thread, :class => "thread-link"%>)</p>
             </div>
 
+            <div class="thread-foot">
+              <span class="glyphicon glyphicon-tags"></span>
+              <%=new_thread.tag_list.map {|t| link_to t,tag_path(t)}.join(', ') %>
+            </div>
+
             <div class="thread-foot">
               <div class="thread-info">
                 <%= image_tag new_thread.user.image_url(:thumb).to_s, :class => "img-circle thread-user-image" %>

app/views/new_threads/show.html.erb

@@ -26,6 +26,9 @@
           </div>
 
           <div class="thread-foot">
+              <span class="glyphicon glyphicon-tags"></span>
+             <%= @new_thread.tag_list.map {|t| link_to t,tag_path(t)}.join(', ') %>
+          </div>
 
             <% if user_signed_in? %>
               <% if @new_thread.user.id == current_user.id %>
@@ -53,8 +56,6 @@
               <% end %>
             </div>
 
-          </div>
-
         </div>
       </div>
 

config/routes.rb

@@ -9,7 +9,7 @@
 
   get 'sitemap.xml', :to => 'sitemap#index', :defaults => { :format => 'xml' }
 
-
+  get 'tags/:tag', to: 'new_threads#index', as: :tag
 
   resources :blockeds
 

db/migrate/20170127162437_acts_as_taggable_on_migration.acts_as_taggable_on_engine.rb

@@ -0,0 +1,31 @@
+# This migration comes from acts_as_taggable_on_engine (originally 1)
+class ActsAsTaggableOnMigration < ActiveRecord::Migration
+  def self.up
+    create_table :tags do |t|
+      t.string :name
+    end
+
+    create_table :taggings do |t|
+      t.references :tag
+
+      # You should make sure that the column created is
+      # long enough to store the required class names.
+      t.references :taggable, polymorphic: true
+      t.references :tagger, polymorphic: true
+
+      # Limit is created to prevent MySQL error on index
+      # length for MyISAM table type: http://bit.ly/vgW2Ql
+      t.string :context, limit: 128
+
+      t.datetime :created_at
+    end
+
+    add_index :taggings, :tag_id
+    add_index :taggings, [:taggable_id, :taggable_type, :context]
+  end
+
+  def self.down
+    drop_table :taggings
+    drop_table :tags
+  end
+end

db/migrate/20170127162438_add_missing_unique_indices.acts_as_taggable_on_engine.rb

@@ -0,0 +1,21 @@
+# This migration comes from acts_as_taggable_on_engine (originally 2)
+class AddMissingUniqueIndices < ActiveRecord::Migration
+  def self.up
+    add_index :tags, :name, unique: true
+
+    remove_index :taggings, :tag_id if index_exists?(:taggings, :tag_id)
+    remove_index :taggings, [:taggable_id, :taggable_type, :context]
+    add_index :taggings,
+              [:tag_id, :taggable_id, :taggable_type, :context, :tagger_id,
+               :tagger_type], unique: true, name: 'taggings_idx'
+  end
+
+  def self.down
+    remove_index :tags, :name
+
+    remove_index :taggings, name: 'taggings_idx'
+
+    add_index :taggings, :tag_id unless index_exists?(:taggings, :tag_id)
+    add_index :taggings, [:taggable_id, :taggable_type, :context]
+  end
+end

db/migrate/20170127162439_add_taggings_counter_cache_to_tags.acts_as_taggable_on_engine.rb

@@ -0,0 +1,15 @@
+# This migration comes from acts_as_taggable_on_engine (originally 3)
+class AddTaggingsCounterCacheToTags < ActiveRecord::Migration
+  def self.up
+    add_column :tags, :taggings_count, :integer, default: 0
+
+    ActsAsTaggableOn::Tag.reset_column_information
+    ActsAsTaggableOn::Tag.find_each do |tag|
+      ActsAsTaggableOn::Tag.reset_counters(tag.id, :taggings)
+    end
+  end
+
+  def self.down
+    remove_column :tags, :taggings_count
+  end
+end

db/migrate/20170127162440_add_missing_taggable_index.acts_as_taggable_on_engine.rb

@@ -0,0 +1,10 @@
+# This migration comes from acts_as_taggable_on_engine (originally 4)
+class AddMissingTaggableIndex < ActiveRecord::Migration
+  def self.up
+    add_index :taggings, [:taggable_id, :taggable_type, :context]
+  end
+
+  def self.down
+    remove_index :taggings, [:taggable_id, :taggable_type, :context]
+  end
+end

db/migrate/20170127162441_change_collation_for_tag_names.acts_as_taggable_on_engine.rb

@@ -0,0 +1,11 @@
+# This migration comes from acts_as_taggable_on_engine (originally 5)
+# This migration is added to circumvent issue #623 and have special characters
+# work properly
+class ChangeCollationForTagNames < ActiveRecord::Migration
+  def up
+    if ActsAsTaggableOn::Utils.using_mysql?
+      execute('ALTER TABLE tags MODIFY name varchar(255) CHARACTER
+      			SET utf8 COLLATE utf8_bin;')
+    end
+  end
+end

db/migrate/20170127162442_add_missing_indexes.acts_as_taggable_on_engine.rb

@@ -0,0 +1,14 @@
+# This migration comes from acts_as_taggable_on_engine (originally 6)
+class AddMissingIndexes < ActiveRecord::Migration
+  def change
+    add_index :taggings, :tag_id
+    add_index :taggings, :taggable_id
+    add_index :taggings, :taggable_type
+    add_index :taggings, :tagger_id
+    add_index :taggings, :context
+
+    add_index :taggings, [:tagger_id, :tagger_type]
+    add_index :taggings, [:taggable_id, :taggable_type, :tagger_id,
+                          :context], name: 'taggings_idy'
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150530031708) do
+ActiveRecord::Schema.define(version: 20170127162442) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -183,6 +183,33 @@
     t.datetime "updated_at"
   end
 
+  create_table "taggings", force: true do |t|
+    t.integer  "tag_id"
+    t.integer  "taggable_id"
+    t.string   "taggable_type"
+    t.integer  "tagger_id"
+    t.string   "tagger_type"
+    t.string   "context",       limit: 128
+    t.datetime "created_at"
+  end
+
+  add_index "taggings", ["context"], name: "index_taggings_on_context", using: :btree
+  add_index "taggings", ["tag_id", "taggable_id", "taggable_type", "context", "tagger_id", "tagger_type"], name: "taggings_idx", unique: true, using: :btree
+  add_index "taggings", ["tag_id"], name: "index_taggings_on_tag_id", using: :btree
+  add_index "taggings", ["taggable_id", "taggable_type", "context"], name: "index_taggings_on_taggable_id_and_taggable_type_and_context", using: :btree
+  add_index "taggings", ["taggable_id", "taggable_type", "tagger_id", "context"], name: "taggings_idy", using: :btree
+  add_index "taggings", ["taggable_id"], name: "index_taggings_on_taggable_id", using: :btree
+  add_index "taggings", ["taggable_type"], name: "index_taggings_on_taggable_type", using: :btree
+  add_index "taggings", ["tagger_id", "tagger_type"], name: "index_taggings_on_tagger_id_and_tagger_type", using: :btree
+  add_index "taggings", ["tagger_id"], name: "index_taggings_on_tagger_id", using: :btree
+
+  create_table "tags", force: true do |t|
+    t.string  "name"
+    t.integer "taggings_count", default: 0
+  end
+
+  add_index "tags", ["name"], name: "index_tags_on_name", unique: true, using: :btree
+
   create_table "users", force: true do |t|
     t.string   "username",               limit: 25
     t.string   "email",                             default: "",       null: false