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Work with on open source projects or with with in a company? In either case, having some agreed upon coding style guides may help reduce individual style conflicts.

* https://github.com/airbnb/ruby

* https://github.com/thoughtbot/guides/tree/master/style/rails

It was at a startup.

I'm not sure I agree that makes it a Rails problem, more of a developers who happen to use this tool problem.

Community is part of tool choice though, for better or for worse.

It's partly a Rails problem because there's a ton of different ways to implement something, so people will always find reasons to disagree with what you did. And the Rails community seems particularly over-opinionated about these things. There's a lot of cargo cult thinking going on when your stuff gets code reviewed.

…which is not a Rails problem, but an inexperienced developer problem.

If your colleagues don't know how to do code reviews well, I don't think they'll be pleasant to work with in anything.

Sounds like your company is missing a style guide. Has nothing to do with Rails.