apply_form_for_options!

# File actionpack/lib/action_view/helpers/form_helper.rb, line 286
      def apply_form_for_options!(object_or_array, options) #:nodoc:
        object = object_or_array.is_a?(Array) ? object_or_array.last : object_or_array

        html_options =
          if object.respond_to?(:new_record?) && object.new_record?
            { :class  => dom_class(object, :new),  :id => dom_id(object), :method => :post }
          else
            { :class  => dom_class(object, :edit), :id => dom_id(object, :edit), :method => :put }
          end

        options[:html] ||= {}
        options[:html].reverse_merge!(html_options)
        options[:url] ||= polymorphic_path(object_or_array)
      end