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rails methods-returning boolean values

Any method in Rails model can return boolean value.

simple method

##this method return ActiveRecord::Relation
  def check_if_user_profile_is_complete
    User.includes( :profile_pictures,:address,:contact_detail).where("user.id = ?",self)
  end

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Again simple method returning boolean value

 ##this method return Boolean(NOTE THE !! signs before result)
  def check_if_user_profile_is_complete
    !!User.includes( :profile_pictures,:address,:contact_detail).where("user.id = ?",self)
  end

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So,the same method will now return boolean instead of anything else

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