ActiveRecord::Store

Active Record Store Store gives you a thin wrapper around serialize for the purpose of storing hashes in a single column. It’s like a simple key/value store baked into your record when you don’t care about being able to query that store outside the context of a single record. You can then declare accessors to this store that are then accessible just like any other attribute of the model. This is v

[suginoy]

type cast書けそう。 "This can be done by overwriting the default accessors (using the same name as the attribute) and calling super to actually change things."

[ukitazume]

mysqlのtextに hashを入れられる感じ。hash定義かける。dirtyにも入れられる