anchor.diff:  
               <%= f.hidden_field :avatar_url %>
               <%= f.hidden_field :facebook_uid %>
  +            <%= f.hidden_field :name %>
               <%= f.hidden_field :extra_data %>
               <%= f.hidden_field :location %>
               <%= hidden_field_tag 'user[follow_product]' %>
  
positive.code:                 </p>
                <% end %>
  
                <%= f.label :username, 'Assembly @username', class: 'control-label' %>
                <%= f.text_field :username, class: 'form-control input-lg', placeholder: 'jane' %>
              </div>
  
  
negative.code:               </div>
              <% end %>
  
              <div class="form-group <%= 'has-error' if f.object.errors[:username].any? %>">
                <% if f.object.errors[:username].any? %>
                  <p class="help-block pull-right">
  