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It would be nice of db constraints and rails validations could be auto-in-sync.
The issue is that `valid?` can't work that way. Also determining which column was affected is ugly on not-PG
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What if we caught the error, and then re-ran validations to figure out which column had the problem...
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...So validations are still done in db and ruby level, but not always triggered via Ruby first?
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We're doing it just fine in Ecto for Postgres, MySQL and Mongo. The only major problem is with SQLite.
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How are y'all doing it in MySQL? Error doesn't present the relevant info. Or does the wire protocol expose it and just the C API doesn't?
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