Serialized attribute can be serialized in an integer column

Fix #8575

Conflicts:
	activerecord/CHANGELOG.md
	activerecord/lib/active_record/attribute_methods/serialization.rb
	activerecord/test/cases/serialized_attribute_test.rb
	activerecord/test/models/person.rb

1 files changed, 22 insertions, 1 deletions

diff --git a/activerecord/test/models/person.rb b/activerecord/test/models/person.rb
index 5991aed55b..07c529d685 100644
--- a/activerecord/test/models/person.rb
+++ b/activerecord/test/models/person.rb
@@ -89,6 +89,27 @@ class TightDescendant < TightPerson; end
 
 class RichPerson < ActiveRecord::Base
   self.table_name = 'people'
-  
+
   has_and_belongs_to_many :treasures, :join_table => 'peoples_treasures'
 end
+
+class Insure
+  INSURES = %W{life annuality}
+
+  def self.load mask
+    INSURES.select do |insure|
+      (1 << INSURES.index(insure)) & mask.to_i > 0
+    end
+  end
+
+  def self.dump insures
+    numbers = insures.map { |insure| INSURES.index(insure) }
+    numbers.inject(0) { |sum, n| sum + (1 << n) }
+  end
+end
+
+class SerializedPerson < ActiveRecord::Base
+  self.table_name = 'people'
+
+  serialize :insures, Insure
+end