<<Continuation>>An express routing js file to take a student's Id and a course Id from a request body to the api server and remove the associated course with the specified course Id from the student's courses list<<Continuation>>

editroute_2.js

 try {
        
          let student = await Students.find({ 'studentId': studentId }).exec();

          /*
           * After finding the student with the provided studentId,
           * Use O(n) algorithm to find the course to complete for student
           * It is unlikely for any student to have more than 5 courses in its course list at aytime
           * Therefore, O(n) algorithm is ok
           */

          if ( student.length > 0 ) {

              let COCOMPLETEFLAGGED = false;

              student[0].courses = student[0].courses.filter(course => {
                  if (course._id == courseId) {
                      COCOMPLETEFLAGGED = course.balanceUnpaid > 0 ? true : false;
                      console.log(COCOMPLETEFLAGGED);
                  }
                  return course._id != courseId
              });

              if (COCOMPLETEFLAGGED == true) {
                  return res.status(Errors.STUDENT.COCOMPLETE_DISALLOWED.CODE).send({
                      detail: `Course complete disallowed. ${student[0].firstName} still has pending balances unpaid`
                  });
              }