Answers for "Or even multiple scope parameters. For example, making sure that a teacher can only be on the schedule once per semester for a particular class."

Or even multiple scope parameters. For example, making sure that a teacher can only be on the schedule once per semester for a particular class.

class TeacherSchedule < ActiveRecord::Base
  validates_uniqueness_of :teacher_id, scope: [:semester_id, :class_id]
end

Posted by: Guest on November-22-2021

Code answers related to "Or even multiple scope parameters. For example, making sure that a teacher can only be on the schedule once per semester for a particular class."