Problem listing assignments of a student in Google Classroom - submission

Question

I am starting to use Classroom API to enhance local apps in our school. In order to make a report for a class, I want to list all student assignments and gradings. I use loops to go through all courses for a student, then all coursework for every course, and then all submissions for every coursework. Here is the piece of code that I use:
function fListWorkStudent(idStudent)
{
// Variables
var pageToken = null;
var optionalArgs =
{
pageToken: pageToken,
courseStates: 'ACTIVE',
studentId: idStudent,
pageSize: 0
};
var optionalArgs2 =
{
pageToken: pageToken,
userId: idStudent,
pageSize: 0
};
// Courses for a student
var response = Classroom.Courses.list(optionalArgs);
var sCourses = response.courses;
if (sCourses.length === 0)
Logger.log("No courses");
else
{
for (course in sCourses)
{
var idCourse=sCourses[course].id;
var nomprof=getUserName(sCourses[course].ownerId);
// Coursework for every course
var responseW = Classroom.Courses.CourseWork.list(idCourse);
var works = responseW.courseWork;
if (works && (works.length > 0))
{
for work in works)
{
var idWork=works[work].id;
// Submissions for every coursework
var responseS = Classroom.Courses.CourseWork.StudentSubmissions.list(idCourse, idWork, optionalArgs2);
var submissions = responseS.studentSubmissions;
if (submissions && submissions.length >0)
{
for (submission in submissions)
{
// Prepare report here
}
}
}
}
}
}
}
The problem with this code is that when I call Classroom.Courses.CourseWork.StudentSubmissions.list(idCourse, idWork, optionalArgs2) to get the submissions filtered of selected student, and the loop reaches a coursework not assigned to that student, the call fails with error 'classroom.courses.courseWork.studentSubmissions.list; error: Requested entity was not found.'
I could solve it by checking in the loop if the coursework is not assigned to that student before calling the API function, or maybe using a try..catch clause to catch the possible error, but I would like to know if there is a smarter solution to this issue.
Regards
Rafael

Answer 1

Unfortunately the API does not give you an endpoint to list directly all assignment / submissions of a given student
However, you are not alone with this problem, there is already a feature request for this functionality on Google's Public Issue Tracker.
I recommend you to give it a "star" in order to increase visibility.
In the mean time, indeed you either need to implement a try...catch statement, or a conditonal statement, something like:
if(works[work].assigneeMode == "ALL_STUDENTS" || (works[work].assigneeMode == "INDIVIDUAL_STUDENTS" && works[work].individualStudentsOptions.studentIds.indexOf(idStudent)!=-1))
{
var responseS = Classroom.Courses.CourseWork.StudentSubmissions.list(idCourse, idWork, optionalArgs2);
...
}