length validation ruby on rails code example

Example 1: validates length rails

class Person < ApplicationRecord
  validates :name, length: { minimum: 2 }
  validates :bio, length: { maximum: 500 }
  validates :password, length: { in: 6..20 }
  validates :registration_number, length: { is: 6 }
end

Example 2: length validation rails

validates :column_name, length: { minimum: 3 }