public async Task <int> AddOrUpdateTeacherEvaluationAsync(TeacherEvaluation evaluation)
{
if (await _dataSource.TeacherEvaluations.AsNoTracking()
.Where(x => x.StudentId.Equals(evaluation.StudentId) && x.TeacherId.Equals(evaluation.TeacherId))
.FirstOrDefaultAsync() != null)
{
_dataSource.TeacherEvaluations.Update(evaluation);
}
else
{
await _dataSource.TeacherEvaluations.AddAsync(evaluation);
}
return(await _dataSource.SaveChangesAsync());
}
public async Task <int> DeleteTeacherEvaluationAsync(TeacherEvaluation evaluation)
{
_dataSource.TeacherEvaluations.Remove(evaluation);
return(await _dataSource.SaveChangesAsync());
}
