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Blog posts by:

Szymon Soppa

Rails & Elixir Developer
21.06.2018 | Szymon Soppa

Three ways of iterating over tree-like ActiveRecord structures

You are building an e-commerce app and at some point you introduce a Category model as a part of Product data. A Category can have various subcategories, which are represented by the same model. At this point, it's obvious we are dealing with a tree-like data structure. Step by step, I'll introduce three ways of iteration over such a structure and compare their performance.

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We've stopped offering our services, but you can check our last product which is still in active development.

humadroid.io is an employee and performance management software. It's an unique tool allowing everyone to be in the loop - by having up to date info about co-workers, time-off, benefits, assets, helping with one-on-ones, being a go-to place for company-wide announcements.

Check out humadroid.io
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