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author | Xavier Noria <fxn@hashref.com> | 2011-02-21 11:42:26 +0100 |
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committer | Xavier Noria <fxn@hashref.com> | 2011-02-21 11:42:26 +0100 |
commit | f826e058355606d1b0503b0395519728335324f4 (patch) | |
tree | 4ad040efe6e5691bb408e8ebc0b6df4a216a1730 /activemodel/lib/active_model/observing.rb | |
parent | cd12c369961a612f6b083fc0e3b877cf59b737f4 (diff) | |
parent | b481574a33764e2db1caf01c233a9c9ac9723780 (diff) | |
download | rails-f826e058355606d1b0503b0395519728335324f4.tar.gz rails-f826e058355606d1b0503b0395519728335324f4.tar.bz2 rails-f826e058355606d1b0503b0395519728335324f4.zip |
Merge branch 'master' of git://github.com/lifo/docrails
Diffstat (limited to 'activemodel/lib/active_model/observing.rb')
-rw-r--r-- | activemodel/lib/active_model/observing.rb | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/activemodel/lib/active_model/observing.rb b/activemodel/lib/active_model/observing.rb index dde3a882cf..af036b560e 100644 --- a/activemodel/lib/active_model/observing.rb +++ b/activemodel/lib/active_model/observing.rb @@ -48,6 +48,7 @@ module ActiveModel observers.each { |o| instantiate_observer(o) } end + # Add a new observer to the pool. def add_observer(observer) unless observer.respond_to? :update raise ArgumentError, "observer needs to respond to `update'" @@ -55,12 +56,14 @@ module ActiveModel observer_instances << observer end + # Notify list of observers of a change. def notify_observers(*arg) for observer in observer_instances observer.update(*arg) end end + # Total number of observers. def count_observers observer_instances.size end |