# json.member_attendances @member_attendances.each do |member|
#   json.(member, :user_id, :attendance_status)
#   json.user_name member.user&.real_name
#   json.student_id member.user&.student_id
# end

json.member_attendances @members.each do |member|
  json.(member, :user_id)
  json.user_name member.user&.real_name
  json.student_id member.user&.student_id
  json.attendance_status @member_attendances.select{|attendance| attendance.course_member_id == member.id}.first&.attendance_status || "ABSENCE"
end

json.members_count @members_count