fix exercise administration

Author: Theresa

app/views/exercises/exercises_all.html.erb

@@ -15,14 +15,12 @@
   <% @exercises.each do |exercise| %>
       <tr>
         <td><%= link_to exercise.title, exercise %></td>
-        <% if defined? exercise.user %>
-            <% if exercise.user.first_name.nil?%>
-                <td><%= link_to "User#{exercise.user.id}", user_path(exercise.user)%></td>
-            <% else %>
-                <td><%= link_to exercise.user.name, user_path(exercise.user) %></td>
-            <% end %>
-        <% else %>
+        <% if !exercise.user %>
             <%= 'User undefined' %>
+        <% elsif exercise.user.first_name.nil?%>
+            <td><%= link_to "User#{exercise.user.id}", user_path(exercise.user)%></td>
+        <% else %>
+            <td><%= link_to exercise.user.name, user_path(exercise.user) %></td>
         <% end %>
         <td><%= exercise.created_at %> </td>
         <td><%= exercise.public ? 'public' : 'private' %> </td>

config/routes.rb

@@ -15,6 +15,7 @@
   get 'sessions/destroy'
 
   get 'comments/comments_all'
+  get 'exercises/exercises_all'
 
   get 'exercises/:id/duplicate', to: 'exercises#duplicate', as: 'duplicate_exercise'
 
@@ -35,8 +36,6 @@
     end
   end
 
-  get 'exercises/exercises_all'
-
 
 
 

db/schema.rb

@@ -110,6 +110,7 @@
     t.integer  "exercise_id"
     t.datetime "created_at",  null: false
     t.datetime "updated_at",  null: false
+    t.string   "file_name"
   end
 
   add_index "exercise_files", ["exercise_id"], name: "index_exercise_files_on_exercise_id"