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authorJosh Sharpe <josh.m.sharpe@gmail.com>2009-08-31 12:50:27 -0500
committerJoshua Peek <josh@joshpeek.com>2009-08-31 12:50:27 -0500
commit80989437dc1502f9194b0600941b6d70a3efa3b2 (patch)
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I added this feature so that a Map of changed fields could be retrieved
after a model had been saved. This is useful in the after_save callback when you need to know what fields changed. At present there is no way to do this other than have code in the before_save callback that takes a copy of the changes Map, which I thought was a bit messy. Example. person = Person.find_by_name('bob') person.name = 'robert' person.changes # => {'name' => ['bob, 'robert']} person.save person.changes # => {} person.previous_changes # => {'name' => ['bob, 'robert']} person.reload person.previous_changes # => {} Signed-off-by: Joshua Peek <josh@joshpeek.com>
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