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-rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 25 |
1 files changed, 25 insertions, 0 deletions
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: + +<ruby> +module M +end + +module N2 +end + +module N + include N2 +end + +class C + extend M + extend N +end + +C.extended_by # => [N, N2, M] +</ruby> + +NOTE: Defined in +active_support/core_ext/object/extending.rb+. + h4. Instance Variables Active Support provides several methods to ease access to instance variables. |