Excessive use of CPU

Hello guys and girls, I have a problem with a method (new), it is
using 100% of CPU for 15/20 seconds. Follow the method below:
http://pastie.org/537568

kits_controller.rb

def new
@page_title = ‘Add a Kit’
@kit = Kit.new
@num_itens = 16
@kit_inclusions = Array.new
@num_itens.times { @kit_inclusions.push(KitInclusion.new) }
render :action => ‘form’
end
def new_do
kit = Kit.new(params[:form])
if kit.save
params[:kit_inclusions].each do |ki|
next if ki[:product_id].empty?
kit_inclusion = KitInclusion.new(ki)
kit_inclusion.kit_id = kit.id
kit_inclusion.save
end
flash[:notice] = ‘Kit added!’
redirect_to :action => ‘index’
else
flash[:notice] = kit.errors.full_messages.map {|fm| “

  • #{fm}</
    li>”}
    redirect_to :action => ‘new’
    end
    end

    form.hmtl.erb

    <% form_for :form, @kit, :url => { :action => action_do } do |f| -%>
    <% @num_itens.times do |t| -%>
    <% fields_for “kit_inclusions[]”, @kit_inclusions[t] do |i| -
    %>

  • Product <%= t + 1 %>:<
    %=
    i.collection_select “product_id”, Product.all(:conditions =>
    {:available => true}, :order => “category_id, model
    ASC”), :id, :display_for_select, {:include_blank => ‘Select…’},
    {:onchange => “qntDefault(‘quantity_#{t}’);”} %><%= i.text_field
    “quantity”, {:onkeydown => “return noLetters(event);”, :class =>
    ‘quantity’, :id => “quantity_#{t}”} %>

  • <% end -%>
    <% end -%>
    <%= image_submit_tag ‘btn_save.png’ %>
    <%= f.hidden_field :id %>
    <% end -%>

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