anchor.diff:  <div class="control-group <%= validation_class %>">
     <%= f.label :login_id, 'Username', :class => 'control-label required' %>
     <div class="controls">
  -    <%= f.text_field :login_id, readonly: !@user.new_record?, :class => "input-xxlarge required" %>
  +    <%= f.text_field :login_id, readonly: !@user.new_record?, :class => "input-xxlarge required", required: true %>
       <span class="help-inline" style="display:block;height:0;">
         <%= errors.join (', ') %>
       </span>
  
positive.code:   <% validation_class = errors.empty? ? {} : 'error' %>
    <div class="control-group <%= validation_class %>">
      
      <%= f.label :password, password_label(@user), :class => 'control-label '+@required %>
      <div class="controls">
        <%= f.password_field :password, :class => "input-xxlarge " +@required %>
          <span class="help-in-line">
            <%=errors.join (', ')%>
        </span>
  
negative.code:   <div class="control-group  <%= validation_class %>">
      <%= f.label :password_confirmation, :class => 'control-label '+@required %>
      <div class="controls">
        <%= f.password_field :password_confirmation, :class => "input-xxlarge " +@required, required: true %>
          <span class="help-in-line">
            <%=errors.join (', ')%>
        </span>
  