form

= form_project.simple_fields_for :orders do |form_order|
  #order-1.accordion-custom
    .accordion-custom-group
      h4
        a.accordion-custom-toggle data-parent="#order-1" data-toggle="collapse" href="#order-1-content"
          i.icon-caret-down
          | Order #1 
          small — 
          span
            | Total budget: 
            span.muted $0 USD

      - grouped_order_item_lines = form_order.object.order_item_lines.group_by {|line| line.order_item.order_item_category }

      = grouped_order_item_lines.each do |category, order_items|
        h1= category.name

        - order_items.group_by{|order_item_line|order_item_line.order_item.name}.each do |order_item, order_item_lines|
          h5= order_item

          - order_item_lines.each do |order_item_line|
            = order_item_line

            = radio_button "project[orders_attributes][0][order_item_lines_attributes]", "[#{order_item_line.order_item.id}][order_item_option_id]", order_item_line.order_item.name

      = form_order.simple_fields_for :order_item_lines do |form_order_lines|
        = form_order_lines.input :order_item_option_id, :label => form_order_lines.object.order_item.name, :as => :radio, :collection => form_order_lines.object.order_item.order_item_options.collect!{|i| ["#{i.name} ($#{i.amount})", i.id] }