Make DSM timestamp columns NOT NULL

db/migrate/20140702053145_add_fields_to_distributors_shipping_methods.rb

@@ -1,7 +1,23 @@
 class AddFieldsToDistributorsShippingMethods < ActiveRecord::Migration
-  def change
+  class DistributorShippingMethod < ActiveRecord::Base
+    self.table_name = "distributors_shipping_methods"
+  end
+
+  def up
     add_column :distributors_shipping_methods, :id, :primary_key
     add_column :distributors_shipping_methods, :created_at, :datetime
     add_column :distributors_shipping_methods, :updated_at, :datetime
+
+    DistributorShippingMethod.reset_column_information
+    DistributorShippingMethod.update_all created_at: Time.now, updated_at: Time.now
+
+    change_column :distributors_shipping_methods, :created_at, :datetime, null: false
+    change_column :distributors_shipping_methods, :updated_at, :datetime, null: false
+  end
+
+  def down
+    remove_column :distributors_shipping_methods, :id
+    remove_column :distributors_shipping_methods, :created_at
+    remove_column :distributors_shipping_methods, :updated_at
   end
 end

db/schema.rb

@@ -166,8 +166,8 @@ ActiveRecord::Schema.define(:version => 20140702053145) do
   create_table "distributors_shipping_methods", :force => true do |t|
     t.integer  "distributor_id"
     t.integer  "shipping_method_id"
-    t.datetime "created_at"
-    t.datetime "updated_at"
+    t.datetime "created_at",         :null => false
+    t.datetime "updated_at",         :null => false
   end
 
   add_index "distributors_shipping_methods", ["distributor_id"], :name => "index_distributors_shipping_methods_on_distributor_id"
@@ -562,9 +562,9 @@ ActiveRecord::Schema.define(:version => 20140702053145) do
     t.string   "email"
     t.text     "special_instructions"
     t.integer  "distributor_id"
+    t.integer  "order_cycle_id"
     t.string   "currency"
     t.string   "last_ip_address"
-    t.integer  "order_cycle_id"
     t.integer  "cart_id"
   end