1 files changed, 3 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb
index 93b8e269fb..74403f9e35 100644
--- a/activerecord/lib/active_record/core.rb
+++ b/activerecord/lib/active_record/core.rb
@@ -165,6 +165,7 @@ module ActiveRecord
     #   User.new({ :first_name => 'Jamie', :is_admin => true }, :without_protection => true)
     def initialize(attributes = nil, options = {})
       @attributes = self.class.initialize_attributes(self.class.column_defaults.dup)
+      @columns_hash = self.class.columns_hash.dup
 
       init_internals
 
@@ -190,6 +191,8 @@ module ActiveRecord
     #   post.title # => 'hello world'
     def init_with(coder)
       @attributes = self.class.initialize_attributes(coder['attributes'])
+      @columns_hash = self.class.columns_hash.merge(coder['column_types'] || {})
+
 
       init_internals
 
@@ -341,8 +344,6 @@ module ActiveRecord
 
       @attributes[pk] = nil unless @attributes.key?(pk)
 
-      @columns_hash = self.class.columns_hash.dup
-
       @relation               = nil
       @aggregation_cache      = {}
       @association_cache      = {}