/// <summary>
/// AJAX to this method to update existing groups with students
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public async Task<string> UpdateGroup(CohortActionObject obj)
{
try
{
var cs = new CohortService(Session["access_token"].ToString());
var cohort = UpdateCohort(cs, obj.cohort); //1) update cohort
var newStudentsAssociations = CreateMultipleAssociation(cs, obj.cohort.id, obj.studentsToCreate); //2) create student cohort association
var cohortCustom = cs.UpdateCohortCustom(obj.cohort.id, JsonConvert.SerializeObject(obj.custom)); //3) update cohort custom entity
//Get a list of the current studentCohortAssociations so that we have the ids to delete them from group
var currentStudentCohortAssociation = await cs.GetStudentCohortAssociationsByCohortId(obj.cohort.id);
//get the studentCohortAssociationId for students to delete
var associationToDelete = (from s in obj.studentsToDelete select (from csca in currentStudentCohortAssociation where csca.studentId == s.id select csca.id).Single());
//delete the studentCohortAssociation
var removeStudents = DeleteMultipleAssociation(cs, associationToDelete);
await Task.WhenAll(newStudentsAssociations, cohortCustom, removeStudents);
return "Success";
}
catch (Exception e)
{
//handle
throw;
}
}
public static async Task<Task<IEnumerable<ActionResponseResult>>> DeleteStudentCohortAssocations(CohortActionObject obj, CohortService cs)
{
Task<IEnumerable<ActionResponseResult>> removeStudents;
//Get a list of the current studentCohortAssociations so that we have the ids to delete them from group
var currentStudentCohortAssociation = await cs.GetStudentCohortAssociationsByCohortId(obj.cohort.id);
//get the studentCohortAssociationId for students to delete
var associationToDelete = (from s in obj.studentsToDelete
select (currentStudentCohortAssociation.FirstOrDefault(csca => csca.studentId == s)));
//delete the studentCohortAssociation
removeStudents = CohortActionHelper.DeleteMultipleStudentCohortAssociations(cs, associationToDelete);
return removeStudents;
}