Arel with WharelObject Relational Mappers (ORM) are complex things. As the term implies, an ORM provides a mapping from objects in an object-oriented language like Ruby to a relational persistence layer. In theory, this makes it possible to abstract away details of this layer behind objects; in practice, of course, things are not so simple. In this post, I’ll show you how I’ve leveraged a couple very simple featu
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