more methods for before_validation

Is possible set 2 methods on before_validation in a model?

before_validation :elaborate
before_validation :download_re开发者_JAVA百科mote_data, :if => :data_url_provided? 

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Yes, your code is fine. Just have in mind that elaborate method is going to be executed first (since it's registered before the download_remote_data method).

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That is certainly valid. You can add as many before_validation calls as you need.