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| author | Mike Gunderloy <MikeG1@larkfarm.com> | 2009-02-14 05:30:32 -0600 |
|---|---|---|
| committer | Mike Gunderloy <MikeG1@larkfarm.com> | 2009-02-14 05:30:32 -0600 |
| commit | dedb9d85d8dc404020d5fcb17e6d0faac5d4b5f0 (patch) | |
| tree | 37afc9d99ff0d1d01cfe26d92ebee099907767bd /activerecord/lib/active_record | |
| parent | 98f1c4c6ec340c29d89995a0bcd1edc6d6a82973 (diff) | |
| download | rails-dedb9d85d8dc404020d5fcb17e6d0faac5d4b5f0.tar.gz rails-dedb9d85d8dc404020d5fcb17e6d0faac5d4b5f0.tar.bz2 rails-dedb9d85d8dc404020d5fcb17e6d0faac5d4b5f0.zip | |
Fix AR callbacks sample code to actually make sense
Diffstat (limited to 'activerecord/lib/active_record')
| -rw-r--r-- | activerecord/lib/active_record/callbacks.rb | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/callbacks.rb b/activerecord/lib/active_record/callbacks.rb index 88958f4583..e375037b5b 100644 --- a/activerecord/lib/active_record/callbacks.rb +++ b/activerecord/lib/active_record/callbacks.rb @@ -104,6 +104,37 @@ module ActiveRecord # The callback objects have methods named after the callback called with the record as the only parameter, such as: # # class BankAccount < ActiveRecord::Base + # before_save EncryptionWrapper.new + # after_save EncryptionWrapper.new + # after_initialize EncryptionWrapper.new + # end + # + # class EncryptionWrapper + # def before_save(record) + # record.credit_card_number = encrypt(record.credit_card_number) + # end + # + # def after_save(record) + # record.credit_card_number = decrypt(record.credit_card_number) + # end + # + # alias_method :after_find, :after_save + # + # private + # def encrypt(value) + # # Secrecy is committed + # end + # + # def decrypt(value) + # # Secrecy is unveiled + # end + # end + # + # So you specify the object you want messaged on a given callback. When that callback is triggered, the object has + # a method by the name of the callback messaged. You can make these callbacks more flexible by passing in other + # initialization data such as the name of the attribute to work with: + # + # class BankAccount < ActiveRecord::Base # before_save EncryptionWrapper.new("credit_card_number") # after_save EncryptionWrapper.new("credit_card_number") # after_initialize EncryptionWrapper.new("credit_card_number") @@ -115,11 +146,11 @@ module ActiveRecord # end # # def before_save(record) - # record.credit_card_number = encrypt(record.credit_card_number) + # record.send("#{@attribute}=", encrypt(record.send("#{@attribute}"))) # end # # def after_save(record) - # record.credit_card_number = decrypt(record.credit_card_number) + # record.send("#{@attribute}=", decrypt(record.send("#{@attribute}"))) # end # # alias_method :after_find, :after_save @@ -134,9 +165,6 @@ module ActiveRecord # end # end # - # So you specify the object you want messaged on a given callback. When that callback is triggered, the object has - # a method by the name of the callback messaged. - # # The callback macros usually accept a symbol for the method they're supposed to run, but you can also pass a "method string", # which will then be evaluated within the binding of the callback. Example: # |