Best method sequence for Ruby on Rails model? [closed]

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In Rails, we offen write a lot of code in our models such as class methods, plugin methods, named_scopes, callbacks... I am wondering if there is a good pattern to organize the sequence. I saw the best example in a presentation before, but now I forgot.

Anyone have suggestion? Thanks

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There is no set way... If you are using a scope (since Rails 3, named_scope is deprecated) that relies on a method, it has to be defined after the method in the model. It's possible to mix and match and sometimes it's necessary to do so.

It doesn't affect load time or efficiency to the best of my knowledge

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I'm pretty OCD when writing ruby, so I have a very opinionated answer to your question. I created this gist as an example of the structure we use.

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I wrote about that a while back as part of my style-guide: acts_as_good_style.

YMMV as to what the "best" grouping/ordering is, but if you'd like my take it's there under the "Model idiom" section