change subjects for topics

app/controllers/learning_objects_controller.rb

@@ -20,7 +20,7 @@ class LearningObjectsController < ApplicationController
   def new
     @learning_object = LearningObject.new
     @school_levels = ['Educação Infantil', 'Ensino Fundamental', 'Ensino Médio']
-    @subjects = Topic.defaults
+    @topics = Topic.defaults
     @types = LearningObject.default_types
     @languages = Language.all
   end
@@ -33,7 +33,7 @@ class LearningObjectsController < ApplicationController
   # POST /learning_objects.json
   def create
     @draft = LearningObject::Draft.new(learning_object_params)
-    @draft.subjects = build_subjects learning_object_params[:subjects]
+    @draft.topics = build_subjects learning_object_params[:topics]
     @draft.publisher = current_user
 
     publisher = LearningObjectPublisher.new(DspaceService.create_client)

app/views/learning_objects/_form.html.erb

@@ -46,9 +46,9 @@
               <br>
             </div>
 
-            <%= f.label :subjects, 'Assuntos' %>
+            <%= f.label :topics, 'Assuntos' %>
             <select id='subjectSelect' name="learning_object[subjects][]" multiple>
-              <%= @subjects.each do |subject| %>
+              <%= @topics.each do |subject| %>
                   <option value='<%= subject.id %>'><%= subject.name %></option>
               <% end %>
             </select>