stability upgrade

app/models/list.rb

@@ -248,7 +248,7 @@ class List
   end
 
   def table_number
-    @table_number ||= table.number
+    @table_number ||= table.try(:number).to_i
   end
 
   def active?

app/models/order.rb

@@ -53,7 +53,7 @@ class Order
   end
 
   def table_number
-    list.table.number
+    list.table_number
   end
   alias table_nr table_number
 

app/models/supplier.rb

@@ -28,7 +28,7 @@ class Supplier
   has_many :tables, dependent: :destroy
   has_many :lists, dependent: :destroy
   #has_many :lists, through: :tables
-  has_many :orders
+  has_many :orders, dependent: :destroy
   has_many :sections, dependent: :destroy
 
   after_create :add_section_on_create

app/views/suppliers/lists/index.html.slim

@@ -26,7 +26,7 @@ form#select-date-form action='' method="get"
             td=show_boolean list.needs_help
             td=show_boolean list.needs_payment
             td.timestamp data-time=list.closed_at.try(:utc).try(:iso8601)
-            td= link_to_if list.table.present?, list.table.try(:number), [:suppliers, list.table]
+            td= link_to_if list.table.present?, list.table_number, [:suppliers, list.table]
             td.currency= list.price.present? ? currency(list.price) : '...'
             td.timestamp data-time=list.created_at.utc.iso8601
             td.actions