packing_slip.rb

# coding: utf-8

class PackingSlip < Prawn::Document
  def initialize(order, view)
    super(:page_layout => :portrait)

    @order = order
    @view = view

    define_grid(:columns => 3, :rows => 5, :gutter => 5)
    default_leading 5

    font_size(10) do
      grid(0, 0).bounding_box           { logo }
      grid(1, 0).bounding_box           { url }
      grid(0, 2).bounding_box           { shipping_address }
      grid(2, 2).bounding_box           { billing_address }
      grid([2, 0], [2, 1]).bounding_box { receipt_info }
      grid([3, 0], [3, 2]).bounding_box { order_table }
      grid([4, 0], [4, 2]).bounding_box { signoff }
    end
  end

  def logo
    image "#{Rails.root}/app/assets/images/CLIENT-200x161.png", :align => :center
  end

  def url
    text "www.CLIENT.com", :align => :center
  end

  def billing_address
    text "Billed to:", :style => :bold
    text @order.view_billing_name
    text @order.bill_address.address1
    text @order.bill_address.address2
    text @order.view_billing_region
    text @order.bill_address.country.name
  end

  def shipping_address
    text "Shipped to:", :style => :bold
    text @order.view_shipping_name
    text @order.ship_address.address1
    text @order.ship_address.address2
    text @order.view_shipping_region
    text @order.ship_address.country.name
  end

  def receipt_info
    text "Receipt for your order placed #{@order.placed_on}"
    text @order.view_number
  end

  def order_table
    rows = [header_row]

    @order.line_items.each { |item| rows << item_row(item) }

    rows << shipping_row
    rows << order_total_row

    table(rows)
  end

  def signoff
    text "Thank you very much for your order!"
    move_down 10
    text "This delivery completes your purchase. If you change your mind, you can return it within 14 calendar days of delivery without stating of reasons. All products must be in the original state and sealed, we cannot accept any opened goods. If your goods arrive damaged—or if you are otherwise unsatisfied with your order—please let us know: info@CLIENT.com."
  end

  private
  def header_row
    [['Quantity',         {}],
     ['Article',          { :width => 300 }],
     ['Price per unit €', {}],
     ['Total price €',    {}]].map do |content, options|

      { :content => content,
        :borders => [:top, :bottom],
        :border_widths => [1, 0, 1, 0]
      }.merge(options)
    end
  end

  def item_row(item)
    [[item.quantity,     {}],
     [item.product.name, {}],
     [sprintf("%.2f", item.price), { :align => :right }],
     [sprintf("%.2f", item.total), { :align => :right }]].map do |content, options|

      { :content => content.to_s,
        :borders => []
      }.merge(options)
    end
  end

  def shipping_row
    [["1", {}],
     ["Shipping & Handling", {}],
     ["0.00", { :align => :right }],
     ["0.00", { :align => :right }]].map do |content, options|

      { :content => content, :borders => [] }.merge(options)
    end
  end

  def order_total_row
    [{ :content => "Total: #{sprintf("%.2f", @order.amount)}",
       :colspan => 4,
       :borders => [],
       :align   => :right }]
  end
end