fix welcome controller, fix view

Signed-off-by: Matheus Agio Nerone <man13@inf.ufpr.br>

app/controllers/welcome_controller.rb

@@ -11,14 +11,10 @@ class WelcomeController < ApplicationController
       repository.for(:learning_object).find(id)
     end
 
-    @Subjects = repository.for(:subject).all.take(8)
-    @Subjects.delete_if do |subject|
-      if subject.highlights.nil? || subject.highlights.empty?
-        true
-      end
-    end
+    @Subjects = repository.for(:subject).all
+    @Subjects.delete_if{|s| not s.highlights.present?}
     @Subjects.each do |subject|
-      object = repository.for(:learning_object).find(subject.highlights.first)
+      subject.highlights
     end
 
   end

app/views/welcome/index.html.erb

@@ -66,8 +66,8 @@
         <% @Subjects.each do |subject|%>
           <div class="col-sm-4">
           <div class="row">
-            <h4><b><%= subject["name"] %></b></h4>
-            <%= render 'shared/application/object_vertical', object: subject["first_highlight"]  %>
+            <h4><b><%= subject.name %></b></h4>
+            <%= render subject.highlights.first, orientation: 'vertical'%>
             <p>
               <a href="#">Ver Mais</a>
             </p>