Refactored pdf generation with newest prawn.

app/documents/order_matrix.rb

@@ -0,0 +1,86 @@
+# encoding: utf-8
+class OrderMatrix < OrderPdf
+
+  MAX_ARTICLES_PER_PAGE = 16 # How many order_articles shoud written on a page
+  
+  def filename
+    "Bestellung #{@order.name}-#{@order.ends.to_date} - Sortiermatrix.pdf"
+  end
+
+  def title
+    "Sortiermatrix der Bestellung: #{@order.name}, beendet am #{@order.ends.strftime('%d.%m.%Y')}"
+  end
+
+  def body
+    order_articles = @order.order_articles.ordered
+
+    text "Artikelübersicht", style: :bold
+    move_down 5
+    text "Insgesamt #{order_articles.size} Artikel", size: 8
+    move_down 10
+
+    order_articles_data = [%w(Artikel Einheit Gebinde FC-Preis Menge)]
+
+    order_articles.each do |a|
+      order_articles_data << [a.article.name,
+                              a.article.unit,
+                              a.price.unit_quantity,
+                              number_with_precision(a.price.fc_price, precision: 2),
+                              a.units_to_order]
+    end
+
+    table order_articles_data, cell_style: {size: 8, overflow: :shrink_to_fit} do |table|
+      table.cells.border_width = 1
+      table.cells.border_color = '666666'
+    end
+
+    page_number = 0
+    total_num_order_articles = order_articles.size
+
+    while page_number * MAX_ARTICLES_PER_PAGE < total_num_order_articles do  # Start page generating
+
+      page_number += 1
+      start_new_page(layout: :landscape)
+
+      # Collect order_articles for this page
+      current_order_articles = order_articles.select do |a|
+        order_articles.index(a) >= (page_number-1) * MAX_ARTICLES_PER_PAGE and
+            order_articles.index(a) < page_number * MAX_ARTICLES_PER_PAGE
+      end
+
+      # Make order_articles header
+      header = [""]
+      for header_article in current_order_articles
+        name = header_article.article.name.gsub(/[-\/]/, " ").gsub(".", ". ")
+        name = name.split.collect { |w| w.truncate(8) }.join(" ")
+        header << name.truncate(30)
+      end
+
+      # Collect group results
+      groups_data = [header]
+
+      @order.group_orders.includes(:ordergroup).all.each do |group_order|
+
+        group_result = [group_order.ordergroup.name.truncate(20)]
+
+        for order_article in current_order_articles
+          # get the Ordergroup result for this order_article
+          goa = order_article.group_order_articles.first conditions: { group_order_id: group_order.id }
+          group_result << ((goa.nil? || goa.result == 0) ? "" : goa.result.to_i)
+        end
+        groups_data << group_result
+      end
+
+      # Make table
+      column_widths = [85]
+      (MAX_ARTICLES_PER_PAGE + 1).times { |i| column_widths << 41 unless i == 0 }
+      table groups_data, column_widths: column_widths, cell_style: {size: 8, overflow: :shrink_to_fit} do |table|
+        table.cells.border_width = 1
+        table.cells.border_color = '666666'
+        table.row_colors = ['ffffff','ececec']
+      end
+
+    end
+  end
+
+end