add testing device images and a lot more, before bootstrap:themed

app/models/list.rb

@@ -22,6 +22,10 @@ class List
     table.supplier
   end
 
+  def table_number
+    @table_number ||= table.number
+  end
+
   def active?
     state == 'active'
   end
@@ -35,4 +39,8 @@ class List
       ProductOrder.create order: @order, product_id: product_id, amount: number if number > 0
     end
   end
+
+  def as_json
+    super.merge(table_number: table_number)
+  end
 end