Override the default form builder for all views rendered by this controller and any of its descendants. Accepts a subclass of ActionView::Helpers::FormBuilder
.
For example, given a form builder:
class AdminFormBuilder < ActionView::Helpers::FormBuilder def special_field(name) end end
The controller specifies a form builder as its default:
class AdminAreaController < ApplicationController default_form_builder AdminFormBuilder end
Then in the view any form using form_for
will be an instance of the specified form builder:
<%= form_for(@instance) do |builder| %> <%= builder.special_field(:name) %> <% end %>
# File actionpack/lib/action_controller/form_builder.rb, line 46 def default_form_builder self.class._default_form_builder end
Default form builder for the controller
© 2004–2021 David Heinemeier Hansson
Licensed under the MIT License.