Add participants to community

app/models/user.rb

@@ -313,6 +313,11 @@ class User < ActiveRecord::Base
     follows.map{|follow| follow.followable.tags.map(&:name)}.flatten.compact.uniq
   end
 
+  def self.community_participants(community)
+    topics_ids = community.topics.pluck(:id)
+    User.joins(:comments).where("comments.commentable_id IN (?) and comments.commentable_type = 'Topic'", topics_ids)
+  end
+
   private
 
     def clean_document_number

app/views/communities/show.html.erb

@@ -20,3 +20,10 @@
     <%= link_to t("topic.new"), new_community_topic_path(@community.id), class: 'button expanded' %>
   </div>
 </div>
+
+<div class="">
+  Participantes
+  <% User.community_participants(@community).each do |participant| %>
+    <%= link_to participant.name, user_path(participant)%>
+  <% end %>
+</div>

app/views/topics/show.html.erb

@@ -6,7 +6,6 @@ Comunidad: <%= @community.proposal.title %>
 
 <div class="tabs-content" data-tabs-content="proposals-tabs" role="tablist">
   <%= render "topics/filter_subnav" %>
-  <%#= render "proposals/notifications" %>
 
   <div class="tabs-panel is-active" id="tab-comments">
     <%= render "topics/comments" %>