show users per question

app/controllers/admin/questions_controller.rb

@@ -10,6 +10,10 @@ module Admin
       @new_question = @conference.questions.new
     end
 
+    def show
+      @registrations = @conference.registrations.joins(:qanswers).uniq
+    end
+
     def new
       @question = Question.new(conference_id: @conference.id)
       authorize! :create, @question

app/models/registration.rb

@@ -25,6 +25,7 @@ class Registration < ActiveRecord::Base
   delegate :email, to: :user
   delegate :nickname, to: :user
   delegate :affiliation, to: :user
+  delegate :username, to: :user
 
   alias_attribute :other_needs, :other_special_needs
 

app/views/admin/questions/_questions.html.haml

@@ -19,6 +19,7 @@
 
       %td
         .btn-group
+          = link_to 'Show', admin_conference_question_path(@conference.short_title, q), class: 'btn btn-success'
           = link_to 'Edit', edit_admin_conference_question_path(@conference.short_title, q),
                     class: 'btn btn-primary', disabled: !(can? :update, q)
           = link_to 'Delete', admin_conference_question_path(@conference.short_title, q),

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

@@ -0,0 +1,26 @@
+.container
+  .row
+    .col-md-12
+      .page-header
+        %h1= @question.title
+        - @question.answers.each do |answer|
+          = answer.title
+          (#{answer.qanswers.find_by(question: @question).registrations.where(conference: @conference).count})
+
+
+  .row
+    .col-md-12
+
+      %table.table.table-border.table-hover.datatable#question_users
+        %thead
+          %th Name
+          %th Username
+          %th Email
+          %th Answer
+        %tbody
+          - @registrations.each do |registration|
+            %tr
+              %td= registration.name
+              %td= registration.username
+              %td= registration.email
+              %td= registration.qanswers.find_by(question: @question).answer.title