Move attribute_types_cached_by_default into attribute methods reading concern

activerecord/lib/active_record/attribute_methods.rb

@@ -4,13 +4,6 @@ module ActiveRecord
   module AttributeMethods #:nodoc:
     extend ActiveSupport::Concern
 
-    ATTRIBUTE_TYPES_CACHED_BY_DEFAULT = [:datetime, :timestamp, :time, :date]
-
-    included do
-      cattr_accessor :attribute_types_cached_by_default, :instance_writer => false
-      self.attribute_types_cached_by_default = ATTRIBUTE_TYPES_CACHED_BY_DEFAULT
-    end
-
     # Declare and check for suffixed attribute methods.
     module ClassMethods
       # Declares a method available for all attributes with the given suffix.
@@ -77,9 +70,6 @@ def define_attribute_methods
             end
           end
         end
-        unless generated_methods.include?("id")
-          define_read_method(:id, primary_key, columns_hash[primary_key.to_s])
-        end
       end
 
       def undefine_attribute_methods

activerecord/lib/active_record/attribute_methods/read.rb

@@ -3,8 +3,15 @@ module AttributeMethods
     module Read
       extend ActiveSupport::Concern
 
+      ATTRIBUTE_TYPES_CACHED_BY_DEFAULT = [:datetime, :timestamp, :time, :date]
+
       included do
         attribute_method_suffix ""
+
+        cattr_accessor :attribute_types_cached_by_default, :instance_writer => false
+        self.attribute_types_cached_by_default = ATTRIBUTE_TYPES_CACHED_BY_DEFAULT
+
+        # Undefine id so it can be used as an attribute name
         undef_method :id
       end
 
@@ -35,6 +42,10 @@ def define_attribute_method(attr_name)
             else
               define_read_method(attr_name.to_sym, attr_name, columns_hash[attr_name])
             end
+
+            if attr_name == primary_key && attr_name != "id"
+              define_read_method(:id, attr_name, columns_hash[attr_name])
+            end
           end
 
         private