Using this gem in an application using ActiveRecord will provide you with a ‘cache_key’ method on collections of models.
The ‘cache_key’ will consist of:
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the tableized name of the class of the first item
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an MD5 hash of the ids in the collection
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to_i on the max created_at date
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to_i on the max updated_at date
The ‘cache_key’ should look like:
'widgets/100-81dc9bdb52d04dc20036dbd8313ed055-1256853629-1256853637'
The resulting cache_key will be different if your group is sorted differently because the MD5 hash is created according to the order given: no sorting is done to create the hash.
If your collection is empty, the cache_key will return a key with the object_id. A cache_key for an empty collection will look like:
'empty/13149280'
Built by Saturn Flyer www.saturnflyer.com
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Fork the project.
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Make your feature addition or bug fix.
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Add tests for it. This is important so I don’t break it in a future version unintentionally.
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Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but
bump version in a commit by itself I can ignore when I pull)
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Send me a pull request. Bonus points for topic branches.
Copyright © 2009 Jim Gay. See LICENSE for details.