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authorSean Griffin <sean@thoughtbot.com>2015-01-10 11:57:14 -0700
committerSean Griffin <sean@thoughtbot.com>2015-01-10 12:07:46 -0700
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Don't attempt to save dirty attributes which are not persistable
This sets a precident for how we handle `attribute` calls, which aren't backed by a database column. We should not take this as a conscious decision on how to handle them, and this can change when we make `attribute` public if we have better ideas in the future. As the composed attributes API gets fleshed out, I expect the `persistable_attributes` method to change to `@attributes.select(&:persistable).keys`, or some more performant variant there-of. This can probably go away completely once we fully move dirty checking into the attribute objects once it gets moved up to Active Model. Fixes #18407
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