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The Ruby and Rails community linklog

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The Power of Arel

by Jake Yesbeck —

If you’re using Ruby on Rails, chances are you are already familiar with ActiveRecord. If not, ActiveRecord is an Object Relational Mapping (ORM). Under the hood, ActiveRecord uses a relational algebra library called Arel to compose queries for execution. Arel is a very powerful library readily available for when ActiveRecord falls short..

Comments

But isn’t Arel also private API aka subject to change in minor patches?

Bernardo Farah —

@Bernardo … Yes it is. Arel’s major version is known to change with Rails’ minor version.

Daniel P. Clark —

Rails maintainers suggest not relying on Arel as its private API - if you’re happy with the risk of being tied to a specific version of rails then go for it.

Nice post though as its knowledge.

Robert Murray —

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