From cf82ddc96a867e63edc60e5813070a8f7b58fc14 Mon Sep 17 00:00:00 2001 From: Xavier Noria Date: Mon, 18 Jan 2010 23:28:14 +0100 Subject: AS guide: documents Object#extended_by --- .../source/active_support_core_extensions.textile | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'railties/guides/source/active_support_core_extensions.textile') diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index f8a72db703..b3c157208c 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -363,6 +363,31 @@ See also +Class#subclasses+ in "Extensions to +Class+ FIXME THIS LINK":FIXME. NOTE: Defined in +active_support/core_ext/object/extending.rb+. +h5. +extended_by+ + +The method +extended_by+ returns an array with the modules that extend the receiver, if any: + + +module M +end + +module N2 +end + +module N + include N2 +end + +class C + extend M + extend N +end + +C.extended_by # => [N, N2, M] + + +NOTE: Defined in +active_support/core_ext/object/extending.rb+. + h4. Instance Variables Active Support provides several methods to ease access to instance variables. -- cgit v1.2.3