<commit_before>class Pair < ActiveRecord::Base
  belongs_to :cohort
  belongs_to :first_student, class_name: "Student"
  belongs_to :second_student, class_name: "Student"

  # validates :first_student, uniqueness: true

  # validate :validate_different_students

  # def validate_different_students
  #   if first_student_id == second_student_id
  #     errors.add(:first_student, "First and Second Student in pair cannot be the same")
  #   end
  # end


# every student apears once in column 1 scope column 1
# every student apears once in column 2
# the leghth is == to the cohort
# the count is as low as possible



end<commit_msg>remove validations from pair<commit_after>class Pair < ActiveRecord::Base
  belongs_to :cohort
  belongs_to :first_student, class_name: "Student"
  belongs_to :second_student, class_name: "Student"
end
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