KISS.

lib/devise.rb

@@ -16,26 +16,6 @@ module Devise
   }.freeze
 
   TRUE_VALUES = [true, 1, '1', 't', 'T', 'true', 'TRUE'].freeze
-
-  MODEL_CONFIG = []
-
-  def self.model_config(klass, accessor, default=nil)
-    # Create Devise accessor
-    mattr_accessor accessor
-
-    # Set default value
-    send(:"#{accessor}=", default)
-
-    # Store configuration method
-    MODEL_CONFIG << accessor
-
-    # Set default value
-    klass.class_eval <<-METHOD
-      def #{accessor}
-        Devise.#{accessor}
-      end
-    METHOD
-  end
 end
 
 require 'devise/warden'

lib/devise/active_record.rb

@@ -47,7 +47,6 @@ module Devise
     #
     def devise(*modules)
       options  = modules.extract_options!
-      options.assert_valid_keys(:except, *Devise::MODEL_CONFIG)
 
       modules  = Devise::ALL                    if modules.include?(:all)
       modules -= Array(options.delete(:except)) if options.key?(:except)
@@ -58,17 +57,8 @@ module Devise
         include Devise::Models.const_get(m.to_s.classify)
       end
 
-      # Convert new keys to methods which overwrites Devise defaults
       options.each do |key, value|
-        if value.is_a?(Proc)
-          define_method key, &value
-        else
-          class_eval <<-END_EVAL, __FILE__, __LINE__
-            def #{key}
-              #{value.inspect}
-            end
-          END_EVAL
-        end
+        self.send(:"#{key}=", value)
       end
     end
 

lib/devise/models/authenticable.rb

@@ -24,13 +24,14 @@ module Devise
     #    User.find(1).valid_password?('password123')         # returns true/false
     #
     module Authenticable
-      Devise.model_config(self, :pepper)
-      Devise.model_config(self, :stretches, 10)
-
       def self.included(base)
         base.class_eval do
           extend ClassMethods
 
+          cattr_accessor :pepper, :stretches, :instance_writer => false
+          protected :pepper, :stretches
+          self.pepper, self.stretches = nil, 10
+
           attr_reader :password
           attr_accessor :password_confirmation
           attr_accessible :email, :password, :password_confirmation