Add vote functionality to tracks

app/controllers/admin/events_controller.rb

@@ -47,8 +47,8 @@ module Admin
       @versions = @event.versions |
                   PaperTrail::Version.where(item_type: 'Commercial').where('object LIKE ?', "%commercialable_id: #{@event.id}\ncommercialable_type: Event%") |
                   PaperTrail::Version.where(item_type: 'Commercial').where('object_changes LIKE ?', "%commercialable_id:\n- \n- #{@event.id}\ncommercialable_type:\n- \n- Event%") |
-                  PaperTrail::Version.where(item_type: 'Vote').where('object_changes LIKE ?', "%\nevent_id:\n- \n- #{@event.id}\n%") |
-                  PaperTrail::Version.where(item_type: 'Vote').where('object LIKE ?', "%\nevent_id: #{@event.id}\n%")
+                  PaperTrail::Version.where(item_type: 'Vote').where('object_changes LIKE ?', "%votable_type:\n- \n- Event\nvotable_id:\n- \n- #{@event.id}%") |
+                  PaperTrail::Version.where(item_type: 'Vote').where('object LIKE ?', "%votable_type: Event\nvotable_id: #{@event.id}%")
     end
 
     def edit
@@ -141,7 +141,7 @@ module Admin
     def vote
       @votes = @event.votes.includes(:user)
 
-      if (votes = current_user.votes.find_by_event_id(params[:id]))
+      if (votes = current_user.votes.find_by(votable: @event))
         votes.update_attributes(rating: params[:rating])
       else
         @myvote = @event.votes.build

app/controllers/admin/tracks_controller.rb

@@ -30,6 +30,7 @@ module Admin
     end
 
     def show
+      @votes = @track.votes.includes(:user)
       respond_to do |format|
         format.html { render }
         format.json { render json: @conference.tracks.to_json }
@@ -65,6 +66,24 @@ module Admin
       end
     end
 
+    def vote
+      @votes = @track.votes.includes(:user)
+
+      if (votes = current_user.votes.find_by(votable: @track))
+        votes.update_attributes(rating: params[:rating])
+      else
+        @myvote = @track.votes.build
+        @myvote.user = current_user
+        @myvote.rating = params[:rating]
+        @myvote.save
+      end
+
+      respond_to do |format|
+        format.html { redirect_to admin_conference_program_track_path(@conference.short_title, @track) }
+        format.js
+      end
+    end
+
     def destroy
       if @track.destroy
         redirect_to admin_conference_program_tracks_path(conference_id: @conference.short_title),

app/models/event.rb

@@ -18,7 +18,7 @@ class Event < ApplicationRecord
   has_one :submitter_event_user, -> { where(event_role: 'submitter') }, class_name: 'EventUser'
   has_one  :submitter, through: :submitter_event_user, source: :user
 
-  has_many :votes, dependent: :destroy
+  has_many :votes, as: :votable
   has_many :voters, through: :votes, source: :user
   has_many :commercials, as: :commercialable, dependent: :destroy
   has_many :surveys, as: :surveyable, dependent: :destroy

app/models/track.rb

@@ -15,6 +15,8 @@ class Track < ApplicationRecord
 
   has_paper_trail ignore: [:updated_at], meta: { conference_id: :conference_id }
 
+  has_many :votes, as: :votable
+  has_many :voters, through: :votes, source: :user
   before_create :generate_guid
   validates :name, presence: true
   validates :color, format: /\A#[0-9A-F]{6}\z/
@@ -100,6 +102,25 @@ class Track < ApplicationRecord
     short_name
   end
 
+  def user_rating(user)
+    (vote = votes.find_by(user: user)) ? vote.rating : 0
+  end
+
+  def voted?(user = nil)
+    return votes.where(user: user).any? if user
+
+    votes.any?
+  end
+
+  def average_rating
+    @total_rating = 0
+    votes.each do |vote|
+      @total_rating += vote.rating
+    end
+    @total = votes.size
+    @total_rating.positive? ? number_with_precision(@total_rating / @total.to_f, precision: 2, strip_insignificant_zeros: true) : 0
+  end
+
   def transition_possible?(transition)
     self.class.state_machine.events_for(current_state).include?(transition)
   end

app/models/vote.rb

@@ -2,7 +2,7 @@
 
 class Vote < ApplicationRecord
   belongs_to :user
-  belongs_to :event
+  belongs_to :votable, polymorphic: true
 
   has_paper_trail ignore: [:updated_at], meta: { conference_id: :conference_id }
 
@@ -11,6 +11,6 @@ class Vote < ApplicationRecord
   private
 
   def conference_id
-    event.program.conference_id
+    votable.program.conference_id
   end
 end

app/views/admin/tracks/_datatable_row_rating.haml

@@ -0,0 +1,12 @@
+- if show_votes
+  %div{ data: { toggle: 'tooltip' }, title: rating_tooltip(track, max_rating) }<
+    = rating_stars(track.average_rating, max_rating, avgrate: true)
+
+.clearfix
+  - if track.voted?(current_user)
+    %span.label.label-success
+      You voted:
+      = rating_fraction(track.user_rating(current_user), max_rating)
+  - else
+    %span.label.label-danger
+      Not rated

app/views/admin/tracks/_voting.html.haml

@@ -0,0 +1,62 @@
+%table.table#myrating
+  - if show_votes
+    %tr
+      %td.col-md-2
+        %b Rating
+      %td
+        #{track.average_rating}/#{max_rating}
+        = rating_stars(track.average_rating, max_rating, avgrate: true)
+    %tr
+      %td
+        %b Voters
+      %td
+        = votes.length
+        - if votes.present?
+          (
+          = votes.collect(&:name).to_sentence
+          )
+  %tr
+    %td.col-md-2
+      %b Your vote
+    %td
+      - if voting_period
+        - max_rating.times do |counter|
+          - if track.user_rating(current_user) > counter
+            = link_to '', vote_admin_conference_program_track_path(conference_id, track, rating: counter + 1),
+              remote: true,
+              id: "label#{counter + 1}",
+              class: 'rating myrating bright',
+              voted: true
+          - else
+            = link_to '', vote_admin_conference_program_track_path(conference_id, track, rating: counter + 1),
+              remote: true,
+              id: "label#{counter + 1}",
+              class: 'rating myrating'
+      - else
+        = rating_stars(track.user_rating(current_user), max_rating, voted: true)
+        (Voting period is closed)
+
+  - if show_votes
+    - if votes.present?
+      - votes.each do |vote|
+        - unless vote.user_id == current_user.id
+          %tr
+            %td
+              = vote.name
+            %td
+              = rating_stars(vote.rating, max_rating)
+
+:javascript
+  $(".myrating").hover(
+    function() {    // mouseover
+        $(this).prevAll().andSelf().addClass('glow');
+    },
+    function() {  // mouseout
+        $(this).siblings().andSelf().removeClass('glow');
+    }
+  );
+
+  $(".myrating").click(function() {
+    $(this).siblings().removeClass("bright");
+    $(this).prevAll().andSelf().addClass("bright");
+  });

app/views/admin/tracks/index.html.haml

@@ -37,6 +37,9 @@
         %thead
           %th ID
           %th Name
+          - if @program.rating_enabled?
+            %th
+              %b Rating
           %th Description
           %th Room
           %th Start Date
@@ -54,6 +57,12 @@
                 = link_to admin_conference_program_track_path(@conference.short_title, track), class: 'btn' do
                   %span.label{style: "background-color: #{track.color}; color: #{ contrast_color(track.color) }"}
                     = track.name
+              - if @program.rating_enabled?
+                %td.col-md-1{ data: { order: track.average_rating } }
+                  = render 'datatable_row_rating',
+                    track:      track,
+                    show_votes: @program.show_voting?,
+                    max_rating: @program.rating
               %td
                 %p
                   = markdown(truncate(track.description))

app/views/admin/tracks/show.html.haml

@@ -104,6 +104,14 @@
                   %b Relevance
                 %td
                   = markdown(@track.relevance)
+            - if @conference.program.rating_enabled?
+              = render 'voting',
+                  track:         @track,
+                  show_votes:    @program.show_voting?,
+                  max_rating:    @program.rating,
+                  voting_period: @program.voting_period?,
+                  votes:         @votes,
+                  conference_id: @conference.short_title
 
     .tab-pane#events
       .col-md-12

app/views/admin/tracks/vote.js.erb

@@ -0,0 +1,10 @@
+$('table#myrating').replaceWith(
+  "<%= escape_javascript(render 'voting', \
+         track:         @track, \
+         show_votes:    @program.show_voting?, \
+         max_rating:    @program.rating, \
+         voting_period: @program.voting_period?, \
+         votes:         @votes, \
+         conference_id: @conference.short_title \
+       ) %>"
+);

app/views/admin/versions/_object_desc_and_link.html.haml

@@ -70,7 +70,7 @@
 
 - when 'EventsRegistration', 'Comment', 'Vote', 'Event'
   event
-  - event_id = object.try(:event_id) || object.try(:commentable_id) || object.id
+  - event_id = object.try(:votable_id) || object.try(:event_id) || object.try(:commentable_id) || object.id
   = link_to (current_or_last_object_state('Event', event_id).try(:title) || 'deleted event'),
           admin_conference_program_event_path(conference_short_title, event_id)