litte fix

Author: marcelja

app/views/exercises/_file_form.html.erb

@@ -1,6 +1,6 @@
 <div class="field">
   <%= f.label :main %><br>
-  <%= text_field_tag :main %>
+  <%= file.text_field :main %>
 </div>
 <div class="field">
   <%= f.label :content %><br>
@@ -11,13 +11,13 @@
 </div>
 <div class="field">
   <%= f.label :path %><br>
-  <%= text_field_tag :path %>
+  <%= file.text_field :path %>
 </div>
 <div class="field">
   <%= f.label :solution %><br>
-  <%= text_field_tag :solution %>
+  <%= file.text_field :solution %>
 </div>
 <div class="field">
   <%= f.label :filetype %><br>
-  <%= text_field_tag :filetype %>
+  <%= file.text_field :filetype %>
 </div>

app/views/exercises/_test_form.html.erb

@@ -7,9 +7,9 @@
 </div>
 <div class="field">
   <%= f.label :feedback_message %><br>
-  <%= text_field_tag :feedback_message %>
+  <%= test.text_field :feedback_message %>
 </div>
 <div class="field">
   <%= f.label :testing_framework %><br>
-  <%= collection_select :test, :testing_framework_id, TestingFramework.all, :id, :name %>
+  <%= test.collection_select :testing_framework_id, TestingFramework.all, :id, :name %>
 </div>