Add version method to top level modules

actionmailer/lib/action_mailer/version.rb

 module ActionMailer
-  module VERSION #:nodoc:
-    MAJOR = 4
-    MINOR = 0
-    TINY  = 0
-    PRE   = "beta1"
+  # Returns the version of the currently loaded ActionMailer as a Gem::Version
+  def self.version
+    Gem::Version.new "4.0.0.beta1"
+  end
 
-    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
+  module VERSION #:nodoc:
+    MAJOR, MINOR, TINY, PRE = ActionMailer.version.segments
+    STRING = ActionMailer.version.to_s
   end
 end

actionpack/lib/action_pack/version.rb

 module ActionPack
-  module VERSION #:nodoc:
-    MAJOR = 4
-    MINOR = 0
-    TINY  = 0
-    PRE   = "beta1"
+  # Returns the version of the currently loaded ActionPack as a Gem::Version
+  def self.version
+    Gem::Version.new "4.0.0.beta1"
+  end
 
-    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
+  module VERSION #:nodoc:
+    MAJOR, MINOR, TINY, PRE = ActionPack.version.segments
+    STRING = ActionPack.version.to_s
   end
 end

activemodel/lib/active_model/version.rb

 module ActiveModel
-  module VERSION #:nodoc:
-    MAJOR = 4
-    MINOR = 0
-    TINY  = 0
-    PRE   = "beta1"
+  # Returns the version of the currently loaded ActiveModel as a Gem::Version
+  def self.version
+    Gem::Version.new "4.0.0.beta1"
+  end
 
-    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
+  module VERSION #:nodoc:
+    MAJOR, MINOR, TINY, PRE = ActiveModel.version.segments
+    STRING = ActiveModel.version.to_s
   end
 end

activerecord/lib/active_record/version.rb

 module ActiveRecord
-  module VERSION #:nodoc:
-    MAJOR = 4
-    MINOR = 0
-    TINY  = 0
-    PRE   = "beta1"
+  # Returns the version of the currently loaded ActiveRecord as a Gem::Version
+  def self.version
+    Gem::Version.new "4.0.0.beta1"
+  end
 
-    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
+  module VERSION #:nodoc:
+    MAJOR, MINOR, TINY, PRE = ActiveRecord.version.segments
+    STRING = ActiveRecord.version.to_s
   end
 end

activesupport/lib/active_support/version.rb

 module ActiveSupport
-  module VERSION #:nodoc:
-    MAJOR = 4
-    MINOR = 0
-    TINY  = 0
-    PRE   = "beta1"
+  # Returns the version of the currently loaded ActiveSupport as a Gem::Version
+  def self.version
+    Gem::Version.new "4.0.0.beta1"
+  end
 
-    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
+  module VERSION #:nodoc:
+    MAJOR, MINOR, TINY, PRE = ActiveSupport.version.segments
+    STRING = ActiveSupport.version.to_s
   end
 end

railties/lib/rails/version.rb

 module Rails
-  module VERSION #:nodoc:
-    MAJOR = 4
-    MINOR = 0
-    TINY  = 0
-    PRE   = "beta1"
+  # Returns the version of the currently loaded Rails as a Gem::Version
+  def self.version
+    Gem::Version.new "4.0.0.beta1"
+  end
 
-    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
+  module VERSION #:nodoc:
+    MAJOR, MINOR, TINY, PRE = Rails.version.segments
+    STRING = Rails.version.to_s
   end
 end

version.rb

 module Rails
-  module VERSION #:nodoc:
-    MAJOR = 4
-    MINOR = 0
-    TINY  = 0
-    PRE   = "beta1"
+  def self.version
+    Gem::Version.new "4.0.0.beta1"
+  end
 
-    STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
+  module VERSION #:nodoc:
+    MAJOR, MINOR, TINY, PRE = Rails.version.segments
+    STRING = Rails.version.to_s
   end
 end