LabeledFormBuilder

Automatically creates field labels, and surrounds the form markup using Data-Definition Lists.

At it's simplest, you use labeled_form_for the same way as form_for, then define each field of the object:

<% labeled_form_for :project, :url=>project_url do |f| %>
  <%= f.text_field :name %>
  <%= f.text_field :owner %>
  <%= f.text_field :password %>
  <%= f.text_area  :description %>
<% end %>

This will create the form, labels and input tags, and structural markup (DL, DT, DD). The labels are based on the field names. You can, of course, override them by adding a :label option:

<%= f.text_field :owner, :label=>'Owner Email Address' %>

The field methods also except :info and :example options. The :info content will appear directly after the label, in a SPAN tag with the class of "info". It will put the content specified in the :example option in a DD tag with the class of "example" directly after the DD tag containing the field HTML.

This plugin also adds a form method for button_group, field_group, and field_set which puts the block content in a DD tag with the class of "button-group":

<% f.button_group do %>
    <%= submit_tag 'Create' %> or <%= link_to "Cancel", projects_url %>
<% end %>

<% f.field_group do %>
    <%= f.text_field :first_name %>
    <%= f.text_field :last_name %>
<% end %>

<% f.field_set :legend => "Personal Info", :with_groups => true do %>
    <% f.field_group do %>
        <%= f.text_field :first_name %>
        <%= f.text_field :last_name %>
    <% end %>
    <% f.field_group do %>
        <%= f.text_field :city %>
        <%= f.text_field :state %>
    <% end %>
<% end %>