cleanup, removed dispensable require statements from ActiveModel

activemodel/CHANGELOG.md

@@ -1,5 +1,10 @@
 ## Rails 4.0.0 (unreleased) ##
 
+*   Removed dispensable `require` statements. Make sure to require `active_model` before requiring
+    individual parts of the framework.
+
+    *Yves Senn*
+
 *   Use BCrypt's MIN_COST in the test environment for speedier tests when using `has_secure_pasword`.
 
     *Brian Cardarella + Jeremy Kemper + Trevor Turk*

activemodel/lib/active_model/callbacks.rb

@@ -1,5 +1,3 @@
-require 'active_support/callbacks'
-
 module ActiveModel
   # == Active \Model \Callbacks
   #

activemodel/lib/active_model/conversion.rb

@@ -1,5 +1,3 @@
-require 'active_support/inflector'
-
 module ActiveModel
   # == Active \Model Conversions
   #

activemodel/lib/active_model/dirty.rb

@@ -1,4 +1,3 @@
-require 'active_model/attribute_methods'
 require 'active_support/hash_with_indifferent_access'
 require 'active_support/core_ext/object/duplicable'
 

activemodel/lib/active_model/naming.rb

@@ -1,4 +1,3 @@
-require 'active_support/inflector'
 require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/module/introspection'
 

activemodel/lib/active_model/observing.rb

@@ -5,7 +5,6 @@ require 'active_support/core_ext/module/remove_method'
 require 'active_support/core_ext/string/inflections'
 require 'active_support/core_ext/enumerable'
 require 'active_support/core_ext/object/try'
-require 'active_support/descendants_tracker'
 
 module ActiveModel
   # == Active \Model Observers Activation

activemodel/lib/active_model/validations.rb

@@ -1,9 +1,6 @@
 require 'active_support/core_ext/array/extract_options'
 require 'active_support/core_ext/hash/keys'
 require 'active_support/core_ext/hash/except'
-require 'active_model/errors'
-require 'active_model/validations/callbacks'
-require 'active_model/validator'
 
 module ActiveModel
 

activemodel/lib/active_model/validations/callbacks.rb

@@ -1,5 +1,3 @@
-require 'active_support/callbacks'
-
 module ActiveModel
   module Validations
     # == Active \Model Validation Callbacks