anchor.diff:        <%= content_tag :label, :class => "add-on" do %>
           <%= check_box_tag :remove, 'true' %>
         <% end %>
  -      <%= f.text_field :disabled_text %>
  +      <%= f.input_field :disabled_text %>
       <% end %>
   <pre>
   f.input :disabled_text, :wrapper =&gt; :prepend do
     content_tag :label, :class =&gt; "add-on" do
       check_box_tag :remove, 'true'
     end
  -  f.text_field :disabled_text
  +  f.input_field :disabled_text
   end
   </pre>
   
       <%= f.input :disabled_text, :wrapper => :append do %>
  -      <%= f.text_field :disabled_text, :class => :mini %>
  +      <%= f.input_field :disabled_text, :class => :mini %>
         <%= content_tag :label, :class => "add-on active" do %>
           <%= check_box_tag :remove, 'true' %>
         <% end %>
  
positive.code:   <% end %>
  <pre>
  f.input :disabled_text, :wrapper =&gt; :append do
    f.text_field :disabled_text, :class => :mini
    content_tag :label, :class =&gt; "add-on active" do
      check_box_tag :remove, 'true'
    end
  
negative.code: 
      <%= f.input :name, :wrapper => :prepend, :label => false do %>
        <%= content_tag :span, "Name", :class => "add-on" %>
        <%= f.input_field :name %>
      <% end %>
  
      <pre>
  f.input :name, :wrapper => :prepend, :label => false do %>
    content_tag :span, "Name", :class => "add-on"
    f.input_field :name
  end </pre>
  
      <%= f.input :content_type, :collection => content_type_options,
  