[Rails] Re: How to pass more than one argument to Rails validation hooks?

Rafael wrote in post #1110688:
> Per this:
>
http://guides.rubyonrails.org/active_record_validations_callbacks.html#available-callbacks
>
> before_validation only occurs/runs on create and update
>

Thank you. I found an explanation. Just to pass :on => save will include
both:

class Person < ActiveRecord::Base
# it will be possible to update email with a duplicated value
validates :email, :uniqueness => true, :on => :create

# it will be possible to create the record with a non-numerical age
validates :age, :numericality => true, :on => :update

# the default (validates on both create and update)
validates :name, :presence => true, :on => :save
end

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