method 
 validate_on_update
  v1.2.6 - Show latest stable - 0 notes - Class: Person   
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validate_on_update() protected  Hide source   
 # File activerecord/examples/validation.rb, line 52 def validate_on_update if attribute_present?("name") && Person.name_exists?(name, id) errors.add("name", "is already taken by another person") end end

 
 