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authorJosé Valim <jose.valim@gmail.com>2010-07-05 12:50:08 +0200
committerJosé Valim <jose.valim@gmail.com>2010-07-05 13:01:27 +0200
commita5dda97602f2188a13cbcab5c7e9a5ba84ba876b (patch)
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Define a convention for descendants and subclasses.
The former should be symmetric with ancestors and include all children. However, it should not include self since ancestors + descendants should not have duplicated. The latter is symmetric to superclass in the sense it only includes direct children. By adopting a convention, we expect to have less conflict with other frameworks, as Datamapper. For this moment, to ensure ActiveModel::Validations can be used with Datamapper, we should always call ActiveSupport::DescendantsTracker.descendants(self) internally instead of self.descendants avoiding conflicts.
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