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| author | Vishnu Atrai <vishnu.atrai@gmail.com> | 2011-08-05 14:35:04 +0530 |
|---|---|---|
| committer | Xavier Noria <fxn@hashref.com> | 2011-08-13 16:22:31 -0700 |
| commit | 33d7a6bc55a983ea690961d3a434096fe80d0fca (patch) | |
| tree | c1fb0fe7174082a09cf21cb2031cc6ba46f851f6 | |
| parent | bc49d6d1eb075900657b0f94d03c51d18a95a54d (diff) | |
| download | rails-33d7a6bc55a983ea690961d3a434096fe80d0fca.tar.gz rails-33d7a6bc55a983ea690961d3a434096fe80d0fca.tar.bz2 rails-33d7a6bc55a983ea690961d3a434096fe80d0fca.zip | |
ActiveModel::Callbacks basic guide
| -rw-r--r-- | railties/guides/source/active_model_basics.textile | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/railties/guides/source/active_model_basics.textile b/railties/guides/source/active_model_basics.textile index 87a9658a94..e4c84365d3 100644 --- a/railties/guides/source/active_model_basics.textile +++ b/railties/guides/source/active_model_basics.textile @@ -45,7 +45,31 @@ person.age_highest? # false h4. Callbacks +Callbacks gives Active Record style callbacks. This provides the ability to define the callbacks and those will run at appropriate time. After defining a callbacks you can wrap with before, after and around custom methods. +<ruby> +class Person + extend ActiveModel::Callbacks + + define_model_callbacks :update + + before_update :reset_me + + def update + _run_update_callbacks do + puts 'saving...' + end + end + + def reset_me + puts 'before saving...' + end +end + +person = Person.new +person.update # before saving... + # saving... +</ruby> h3. Changelog |