private bool IsKeyValid(TeachingAssignmentModel model)
{
if (!_exist.TeacherExists(model.TeacherID))
{
_resp.code = 404;
_resp.messages.Add("Teacher not found");
return(false);
}
if (!_exist.ClassExists(model.ClassID))
{
_resp.code = 404;
_resp.messages.Add("Class not found");
return(false);
}
if (!_exist.SubjectExists(model.SubjectID))
{
_resp.code = 404;
_resp.messages.Add("Subject not found");
return(false);
}
return(true);
}
public ActionResult EditTeachingAssignment(int assignmentId, TeachingAssignmentModel model)
{
var oldAssignment = _teachingAssignmentService.GetTeachingAssignment(assignmentId);
// if no class is found
if (oldAssignment == null)
{
return(NotFound());
}
// check if foreign key(s), unique key(s) are invalid
if (!IsKeyValid(model))
{
return(StatusCode(_resp.code, _resp));
}
// check if model matches with data annotation in front-end model
if (ModelState.IsValid)
{
var newAssignment = new TeachingAssignment(oldAssignment);
newAssignment.TeacherID = model.TeacherID;
newAssignment.ClassID = model.ClassID;
newAssignment.SubjectID = model.SubjectID;
// check for (teacherId, classId, subjectId)
if (newAssignment.TeacherID != oldAssignment.TeacherID || newAssignment.ClassID != oldAssignment.ClassID || newAssignment.SubjectID != oldAssignment.SubjectID)
{
if (_exist.TeachingAssignmentExist(newAssignment.TeacherID, newAssignment.ClassID, newAssignment.SubjectID))
{
_resp.code = 400; // bad request
_resp.messages.Add(new { Teacher = "Already assign teacher for this class with this subject" });
return(StatusCode(_resp.code, _resp));
}
}
// bind value(s)
oldAssignment.TeacherID = newAssignment.TeacherID;
oldAssignment.ClassID = newAssignment.ClassID;
oldAssignment.SubjectID = newAssignment.SubjectID;
_teachingAssignmentService.Update();
return(Ok(oldAssignment));
}
else
{
var errors = new List <string>();
foreach (var state in ModelState)
{
foreach (var error in state.Value.Errors)
{
errors.Add(error.ErrorMessage);
}
}
return(BadRequest(errors));
}
}
// [Authorize(Roles = "Manager")]
public ActionResult CreateTeachingAssignment(TeachingAssignmentModel model)
{
if (ModelState.IsValid)
{
if (!IsKeyValid(model))
{
return(StatusCode(_resp.code, _resp));
}
if (_exist.TeachingAssignmentExist(model.TeacherID, model.ClassID, model.SubjectID))
{
_resp.code = 400; // 400: Bad Request
_resp.messages.Add("Invalid unique key");
return(BadRequest(_resp));
}
TeachingAssignment teachingAssign = new TeachingAssignment
{
TeacherID = model.TeacherID,
ClassID = model.ClassID,
SubjectID = model.SubjectID
};
// create teacher
_teachingAssignmentService.CreateTeachingAssignment(teachingAssign);
return(StatusCode(201)); // 201: Created
}
else
{
// response helper method
var errors = new List <string>();
foreach (var state in ModelState)
{
foreach (var error in state.Value.Errors)
{
errors.Add(error.ErrorMessage);
}
}
return(BadRequest(errors));
}
}