ruby - returning from a rails method with a string -


The basic question I'm afraid of, but I can not find the answer I have a method on a model called "Warning Flag" I want to stop the method and return the string to one of the few conditions so that the code is not run unnecessarily. So something like that 

  def warnings_flag "no flag" and return to self-active? ... Finish things here

However, this is clearly wrong, it stops the code, but returns only a zero.

Help!

simply do: 

  def warning_backup until active " Any flag "? ... finish things here

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