DEPRECATION WARNING in Rails3 for before_create, before_update, before_save, before_destroy

Question

I just upgraded my application from Rails 2.3 to 3 and I\'m getting some DEPRECATION WARNINGS for my before_create ,update, save, destroy etc.

Does anyone know how ot f

Answer 1

The warning you're seeing is Rails 3's attempt to discourage you from overwriting the base before_* and after_* methods. This is similar to how you would have before_filter and other callbacks in your controller.

What this means is that instead of doing:

def before_create
  self.username.downcase!
  self.salt = User.make_salt(self.username)
  self.hashed_password = User.hash_with_salt(@password, self.salt)
end

Rails wants you to do:

before_create :downcase_username_and_create_password

def downcase_username_and_create_password
  self.username.downcase!
  self.salt = User.make_salt(self.username)
  self.hashed_password = User.hash_with_salt(@password, self.salt)
end

In this case, you might even split up the two, as there could be a possibility that you'd want to generate a password independently:

before_create :downcase_username, :create_password

def downcase_username
  self.username.downcase!
end

def create_password
  self.salt = User.make_salt(self.username)
  self.hashed_password = User.hash_with_salt(@password, self.salt)
end