added railtie and moved in some config defaults for Rails and AR

lib/validates_timeliness.rb

@@ -14,7 +14,7 @@ module ValidatesTimeliness
 
   # Extend ORM/ODMs for full support (:active_record, :mongoid).
   mattr_accessor :extend_orms
-  @@extend_orms = [ defined?(ActiveRecord) && :active_record ].compact
+  @@extend_orms = []
 
   # User the plugin date/time parser which is stricter and extendable
   mattr_accessor :use_plugin_parser
@@ -22,7 +22,7 @@ module ValidatesTimeliness
 
   # Default timezone
   mattr_accessor :default_timezone
-  @@default_timezone = defined?(ActiveRecord) ? ActiveRecord::Base.default_timezone : :utc
+  @@default_timezone = :utc
 
   # Set the dummy date part for a time type values.
   mattr_accessor :dummy_date_for_time_type
@@ -30,7 +30,7 @@ module ValidatesTimeliness
 
   # Ignore errors when restriction options are evaluated
   mattr_accessor :ignore_restriction_errors
-  @@ignore_restriction_errors = defined?(Rails) ? !Rails.env.test? : false
+  @@ignore_restriction_errors = false
 
   # Shorthand time and date symbols for restrictions
   mattr_accessor :restriction_shorthand_symbols
@@ -55,3 +55,4 @@ require 'validates_timeliness/validator'
 require 'validates_timeliness/helper_methods'
 require 'validates_timeliness/attribute_methods'
 require 'validates_timeliness/extensions'
+require 'validates_timeliness/railtie' if defined?(Rails)

lib/validates_timeliness/railtie.rb

@@ -0,0 +1,14 @@
+module ValidatesTimeliness
+  class Railtie < Rails::Railtie
+    initializer "validates_timeliness.initialize_active_record", :after => 'active_record.initialize_timezone' do
+      ActiveSupport.on_load(:active_record) do
+        ValidatesTimeliness.default_timezone = ActiveRecord::Base.default_timezone
+        ValidatesTimeliness.extend_orms = [ :active_record ]
+      end
+    end
+
+    initializer "validates_timeliness.initialize_restriction_errors" do
+      ValidatesTimeliness.ignore_restriction_errors = !Rails.env.test?
+    end
+  end
+end