Rails is looking for the wrong method

I have a column named _SOMETHING as part of an object created with rails g scaffold, say: rails g scaffold Person _SOMETHING:string

In the create method, when you do @ person.save, a popup message appears that it cannot find the method something

(no underscore and lower case).

Why is he looking for a method with this name?

I secured it by creating

def something
   true
end

      

        
        
        
      

    

in my Person model. I'm pretty sure this is not the correct way to solve this problem. Using Ruby 2.2.2, Rails 4.2.1

Thank you in advance