public PartialViewResult GradeStudent(int courseId)
{
var model = new GradeStudentViewModel()
{
CourseId = courseId
};
return(PartialView(model));
}
public JsonResult GradeStudent(GradeStudentViewModel model)
{
if (!ModelState.IsValid)
{
return(Json("'Success':'false', 'Error' : 'Invalid grade information! Grades should be between 2 and 6.'"));
}
var result = Service.GradeStudent(model, HttpContext.User.Identity.GetUserId());
return(Json(!result.Succeded ? $"'Success':'false','Error':'{result.Message}'" : "'Success':'true'"));
}
public IExecutionResult GradeStudent(GradeStudentViewModel model, string userId)
{
var repo = unitOfWork.GetRepository <StudentsCourses>();
var checks = repo.FirstOrDefault(
where : r => r.StudentId == model.StudentId && r.CourseId == model.CourseId,
select: r => new
{
IsTrainer = r.Course.Trainer.Id == userId,
CourseEndDate = r.Course.EndDate
});
if (checks == null)
{
return(new ExecutionResult()
{
Succeded = false,
Message = CourseMessages.CannotGradeNotSignedUp()
});
}
if (!checks.IsTrainer)
{
return(new ExecutionResult()
{
Succeded = false,
Message = CourseMessages.NotTrainerInCourse()
});
}
if (checks.CourseEndDate.CompareTo(DateTime.Now) > 0)
{
return(new ExecutionResult()
{
Succeded = false,
Message = CourseMessages.CannotGradeEndDateHasntPassed()
});
}
var relationship = repo.FirstOrDefault(where : r => r.StudentId == model.StudentId && r.CourseId == model.CourseId);
relationship.Grade = model.Grade;
repo.Update(relationship);
unitOfWork.Save();
return(new ExecutionResult()
{
Succeded = true,
Message = CourseMessages.SuccessfullyGraded()
});
}