Ruby on Rails 實戰聖經 | ActiveRecord - 基本操作與關聯設計

ActiveRecord - 基本操作與關聯設計 All problems in computer science can be solved by another level of indirection(abstraction) - David Wheeler …except for the problem of too many layers of indirection. - Kevlin Henney’s corollary ORM 與抽象滲漏法則

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