Ruby on Rails

Hi everyone. I'm new in ruby and recently faced with mass assignment
problem. Below I attached a sample code similar to mine. Could you
explain me what should I use in require method??? is it a name of
model(person) or a variable name which I assign result(person =
current_account.people.find(params[:id])) or maybe it should be an
object attribute like @person??? Because I used various types but always
have the same error.

The second question - is it necessary to give the same name for private
method def person_params as the name of (person_params) for db update? 

class PeopleController < ActionController::Base

  def update
    person = current_account.people.find(params[:id])
    person.update_attributes!(person_params)
    redirect_to person
  end

  private

    def person_params
      params.require(:person).permit(:name, :age)
    end
end

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