mileszs

I am a lot quieter on the Internet

Deprecation Warnings for proxy_owner in Rails 3.1

In Rails, you are used to doing something like this:

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has_many :assignments do
  def root
    proxy_owner.assignments.where(:ancestry => nil).first
  end
end

This way, if you call parent_record.assignments.root, the root method acts on the array of assignments that belong to that parent. It’s nice. However, in Rails 3.1 you will see a big scary message in your logs, or in your test output.

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DEPRECATION WARNING: Calling record.assignments.proxy_owner is deprecated. Please use record.association(:assignments).owner instead. (...)

I will admit that it is not very frightening, actually. It is mostly merely annoying… annoying as hell. Get out of my test output!

The working solution that I found looks like this:

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has_many :assignments do
  def root
    @association.owner.assignments.where(:ancestry => nil).first
  end
end

This functionality is now defined in collection_proxy.rb, which was quite a bit of help in finding this solution. Bid those deprecation warnings adieu!

PS – I do not know whether this is the core-team accepted solution. I am certainly happy to see a better one!