Add form error code

app/assets/stylesheets/application.css.scss

@@ -1,5 +1,3 @@
 //= require_tree .
 //= require_self
 //= require 'custom'
-@import 'bootstrap-sprockets';
-@import 'bootstrap';

app/assets/stylesheets/custom.css.scss

@@ -1,3 +1,19 @@
+@import 'bootstrap-sprockets';
+@import 'bootstrap';
+
 body {
   padding-top: 70px;
 }
+
+#form-errors {
+  color: #f00;
+  ul {
+    list-style: none;
+    margin: 0 0 18px 0;
+  }
+}
+
+.field_with_errors {
+  @extend .form-group;
+  @extend .has-error;
+}

app/views/application/_form_messages.html.erb

@@ -0,0 +1,12 @@
+<% if object.errors.any? %>
+  <div id="form-errors">
+    <div class="alert alert-danger">
+      The form contains <%= pluralize(object.errors.count, 'error') %>.
+    </div>
+    <ul>
+      <% object.errors.full_messages.each do |msg| %>
+        <li>* <%= msg %></li>
+      <% end %>
+    </ul>
+  </div>
+<% end %>

app/views/friendships/_form.html.erb

@@ -1,17 +1,6 @@
-<%= form_for(@friendship) do |f| %>
-  <% if @friendship.errors.any? %>
-    <div id="error_explanation">
-      <h2><%= pluralize(@friendship.errors.count, "error") %> prohibited this friendship from being saved:</h2>
-
-      <ul>
-      <% @friendship.errors.full_messages.each do |message| %>
-        <li><%= message %></li>
-      <% end %>
-      </ul>
-    </div>
-  <% end %>
-
-  <div class="actions">
-    <%= f.submit %>
+<%= form_for @friendship, html: { role: 'form' } do |f| %>
+  <%= render 'form_messages', object: @friendship %>
+  <div class="form-group">
+    <%= f.submit class: 'btn btn-primary' %>
   </div>
 <% end %>

app/views/friendships/index.html.erb

@@ -11,7 +11,6 @@
     <% @friendships.each do |friendship| %>
       <tr>
         <td><%= link_to 'Show', friendship %></td>
-        <td><%= link_to 'Edit', edit_friendship_path(friendship) %></td>
         <td><%= link_to 'Destroy', friendship, method: :delete, data: { confirm: 'Are you sure?' } %></td>
       </tr>
     <% end %>

app/views/friendships/show.html.erb

@@ -1,4 +1,3 @@
 <p id="notice"><%= notice %></p>
 
-<%= link_to 'Edit', edit_friendship_path(@friendship) %> |
 <%= link_to 'Back', friendships_path %>