Check if your associations have been eager loaded

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Jun 13 ’11

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Check if your associations have been eager loaded

If you want to check if associations of an object have been eager loaded, use the loaded? method:

@blogpost = Post.includes(:comments).find(1)
@blogpost.comments.loaded?
=> true

@blogpost = Post.find(1)
@blogpost.comments.loaded?
=> false

This might for example be useful to test eager loading in your tests.

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