ErrorMessagesForHelper
Rails 3.0.x error_messages_for_helper plugin.
Example
<%= form_for :test, :url => => ‘create’, :html => => :post do |f| %> <%= error_messages_for :test %>
<%= f.text_field :name %>
<%= f.text_field :age %>
<% end %>
When @test.errors is not empty then output for error_messages_for will be:
<div class=“error_explanation”>
<h2>Unable to save data.</h2>
<p>Errors list:</p>
<ul>
<li>Can't be empty</li>
<li>Must be integer</li>
<li>
</div>
For custom messages in your locale put this section:
error_messages_for:
header_message: 'Unable to save data.'
error_list: 'Errors list:'
Copyright © 2011 [Damian Baćkowski], released under the MIT license