find_or_create

Perhaps I’m missing something here, but here’s a method that I often add into my Rails models

def self.find_or_create opts
  first(:conditions => opts) || create(opts)
end

It’s use is simple:

 Membership.find_or_create :channel_id, :user_id

Now there is a dynamic finder self.find_or_create_by_XXX, but it isn’t useful in the same way.

Is there a reason why something like that method isn’t in AR core ?

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