Refactored pdf generation with newest prawn.

app/documents/order_by_groups.rb

@@ -0,0 +1,51 @@
+# encoding: utf-8
+class OrderByGroups < OrderPdf
+
+  def filename
+    "Bestellung #{@order.name}-#{@order.ends.to_date} - Gruppensortierung.pdf"
+  end
+
+  def title
+    "Gruppensortierung der Bestellung: #{@order.name}, beendet am #{@order.ends.strftime('%d.%m.%Y')}"
+  end
+
+  def body
+    # Start rendering
+    @order.group_orders.each do |group_order|
+      text group_order.ordergroup.name, size: 9, style: :bold
+
+      total = 0
+      rows = []
+      rows << %w(Artikel Menge Preis GebGr Einheit Summe) # Table Header
+
+      group_order_articles = group_order.group_order_articles.ordered
+      group_order_articles.each do |goa|
+        price = goa.order_article.price.fc_price
+        sub_total = price * goa.result
+        total += sub_total
+        rows <<  [goa.order_article.article.name,
+                  goa.result,
+                  number_with_precision(price, precision: 2),
+                  goa.order_article.price.unit_quantity,
+                  goa.order_article.article.unit,
+                  number_with_precision(sub_total, precision: 2)]
+      end
+      rows << [ "Summe", nil, nil, nil, nil, number_with_precision(total, precision: 2)]
+
+      table rows, column_widths: [250,50,50,50,50,50], cell_style: {size: 8, overflow: :shrink_to_fit} do |table|
+        # borders
+        table.cells.borders = []
+        table.row(0).borders = [:bottom]
+        table.row(group_order_articles.size).borders = [:bottom]
+        table.cells.border_width            = 1
+        table.cells.border_color            = '666666'
+
+        table.columns(1..3).align = :right
+        table.columns(5).align = :right
+      end
+
+      move_down 15
+    end
+
+  end
+end