validation 검사가 save, update, create 모든 경우에 일어난다
상황
해결
validates_with WarRequestCreateValidator, field: [ :start_date, :end_date, :war_time ], on: :createLast updated
validates_with WarRequestCreateValidator, field: [ :start_date, :end_date, :war_time ], on: :createLast updated