rubocop files update and auto correction

app/controllers/admin/comments_controller.rb

@@ -24,7 +24,7 @@ module Admin
 
 # Grouping all comments by conference, and by event. It returns {:conference => {:event => [{comment_2}, {comment_1 }]}}
     def grouped_comments(remarks)
-      remarks.group_by{ |comment| comment.commentable.conference }.map {|conference, comments| [conference, comments.group_by{|comment| comment.commentable}]}.to_h
+      remarks.group_by{ |comment| comment.commentable.conference }.map {|conference, comments| [conference, comments.group_by(&:commentable)]}.to_h
     end
   end
 end

app/controllers/admin/conference_controller.rb

@@ -21,7 +21,7 @@ module Admin
 
       @active_conferences = Conference.get_active_conferences_for_dashboard # pending or the last two
       @deactive_conferences = Conference.
-          get_conferences_without_active_for_dashboard(@active_conferences) # conferences without active
+                              get_conferences_without_active_for_dashboard(@active_conferences) # conferences without active
       @conferences = @active_conferences + @deactive_conferences
 
       @recent_users = User.limit(5).order(created_at: :desc)
@@ -101,7 +101,7 @@ module Admin
 
       @total_submissions = @conference.events.count
       @new_submissions = @conference.events.
-          where('created_at > ?', current_user.last_sign_in_at).count
+                         where('created_at > ?', current_user.last_sign_in_at).count
 
       @program_length = @conference.current_program_hours
       @new_program_length = @conference.new_program_hours(current_user.last_sign_in_at)
@@ -134,7 +134,7 @@ module Admin
 
       @difficulty_levels_distribution = @conference.difficulty_levels_distribution
       @difficulty_levels_distribution_confirmed = @conference.
-          difficulty_levels_distribution(:confirmed)
+                                                  difficulty_levels_distribution(:confirmed)
 
       @tracks_distribution = @conference.tracks_distribution
       @tracks_distribution_confirmed = @conference.tracks_distribution(:confirmed)

app/controllers/admin/emails_controller.rb

@@ -6,7 +6,7 @@ module Admin
     def update
       @conference.email_settings.update_attributes(params[:email_settings])
       redirect_to(admin_conference_emails_path(
-                  @conference.short_title),
+                    @conference.short_title),
                   notice: 'Settings have been successfully updated.')
     end
 

app/controllers/admin/events_controller.rb

@@ -106,7 +106,7 @@ module Admin
 
     def update
       if @event.submitter.update_attributes(params[:user]) &&
-        @event.update_attributes(params[:event])
+         @event.update_attributes(params[:event])
 
         if request.xhr?
           render js: 'index'

app/controllers/admin/questions_controller.rb

@@ -73,12 +73,9 @@ module Admin
           # Delete question and its answers
           begin
             Question.transaction do
-
               @question.destroy
-              @question.answers.each do |a|
-                a.destroy
-              end
-              flash[:notice] = "Deleted question: #{@question.title} and its answers: #{@question.answers.map {|a| a.title}.join ','}"
+              @question.answers.each(&:destroy)
+              flash[:notice] = "Deleted question: #{@question.title} and its answers: #{@question.answers.map(&:title).join ','}"
             end
           rescue ActiveRecord::RecordInvalid
             flash[:error] = 'Could not delete question.'

app/controllers/admin/registrations_controller.rb

@@ -53,14 +53,14 @@ module Admin
 
     def registration_params
       params.require(:registration).
-          permit(
-              :conference_id, :arrival, :departure,
-              :volunteer,
-              vchoice_ids: [], qanswer_ids: [], event_ids: [],
-              qanswers_attributes: [],
-              user_attributes: [
-                  :id, :name, :tshirt, :mobile, :volunteer_experience, :languages,
-                  :nickname, :affiliation])
+        permit(
+          :conference_id, :arrival, :departure,
+          :volunteer,
+          vchoice_ids: [], qanswer_ids: [], event_ids: [],
+          qanswers_attributes: [],
+          user_attributes: [
+              :id, :name, :tshirt, :mobile, :volunteer_experience, :languages,
+              :nickname, :affiliation])
     end
   end
 end

app/controllers/admin/sponsors_controller.rb

@@ -27,7 +27,7 @@ module Admin
     def update
       if @sponsor.update_attributes(sponsor_params)
         redirect_to(admin_conference_sponsors_path(
-                    conference_id: @conference.short_title),
+                      conference_id: @conference.short_title),
                     notice: 'Sponsor successfully updated.')
       else
         flash[:error] = "Update sponsor failed: #{@sponsor.errors.full_messages.join('. ')}."

app/controllers/admin/sponsorship_levels_controller.rb

@@ -27,7 +27,7 @@ module Admin
     def update
       if @sponsorship_level.update_attributes(sponsorship_level_params)
         redirect_to(admin_conference_sponsorship_levels_path(
-                    conference_id: @conference.short_title),
+                      conference_id: @conference.short_title),
                     notice: 'Sponsorship level successfully updated.')
       else
         flash[:error] = "Update Sponsorship level failed: #{@sponsorship_level.errors.full_messages.join('. ')}."