diff options
author | Gonçalo Silva <goncalossilva@gmail.com> | 2011-04-17 17:08:49 +0100 |
---|---|---|
committer | Gonçalo Silva <goncalossilva@gmail.com> | 2011-04-17 17:08:49 +0100 |
commit | 1c2b2233c3a7ec76c0a0eddf5b8be45c489be133 (patch) | |
tree | 56f2b767c3a4f1f14c51606bf2cbb714a98c5f89 /activerecord/lib/active_record/callbacks.rb | |
parent | 8d558cb1b069410c8f693295c9c4e2ffc9661e06 (diff) | |
parent | b6843f22ac42b503f6b8ac00105ca0679049be7d (diff) | |
download | rails-1c2b2233c3a7ec76c0a0eddf5b8be45c489be133.tar.gz rails-1c2b2233c3a7ec76c0a0eddf5b8be45c489be133.tar.bz2 rails-1c2b2233c3a7ec76c0a0eddf5b8be45c489be133.zip |
Merge branch 'master' of https://github.com/rails/rails into performance_test
Diffstat (limited to 'activerecord/lib/active_record/callbacks.rb')
-rw-r--r-- | activerecord/lib/active_record/callbacks.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/callbacks.rb b/activerecord/lib/active_record/callbacks.rb index 86d58df99b..a175bf003c 100644 --- a/activerecord/lib/active_record/callbacks.rb +++ b/activerecord/lib/active_record/callbacks.rb @@ -214,6 +214,24 @@ module ActiveRecord # needs to be aware of it because an ordinary +save+ will raise such exception # instead of quietly returning +false+. # + # == Debugging callbacks + # + # The callback chain is accessible via the <tt>_*_callbacks</tt> method on an object. ActiveModel Callbacks support + # <tt>:before</tt>, <tt>:after</tt> and <tt>:around</tt> as values for the <tt>kind</tt> property. The <tt>kind</tt> property + # defines what part of the chain the callback runs in. + # + # To find all callbacks in the before_save callback chain: + # + # Topic._save_callbacks.select { |cb| cb.kind.eql?(:before) } + # + # Returns an array of callback objects that form the before_save chain. + # + # To further check if the before_save chain contains a proc defined as <tt>rest_when_dead</tt> use the <tt>filter</tt> property of the callback object: + # + # Topic._save_callbacks.select { |cb| cb.kind.eql?(:before) }.collect(&:filter).include?(:rest_when_dead) + # + # Returns true or false depending on whether the proc is contained in the before_save callback chain on a Topic model. + # module Callbacks extend ActiveSupport::Concern |