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 IActionResult EditClass(int classId, ClassModel model)
{
var oldClass = _classService.GetClass(classId);
// if no class is found
if (oldClass == null)
{
return(NotFound());
}
// check if foreign key(s), unique key(s) are invalid
if (!IsEditKeysValid(model))
{
return(StatusCode(resp.code, resp));
}
// check if model matches with data annotation in front-end model
if (ModelState.IsValid)
{
var newClass = new Class(oldClass);
newClass.Name = model.Name;
newClass.Year = model.Year;
newClass.GradeID = model.GradeID;
newClass.HeadTeacherID = model.HeadTeacherID;
// check for (Name, Year)
if (newClass.Name != oldClass.Name || newClass.Year != oldClass.Year)
{
if (exist.ClassExists(newClass.Name, newClass.Year))
{
resp.code = 400; // bad request
resp.messages.Add(new { Name = "Already have class " + model.Name + " in " + model.Year });
return(StatusCode(resp.code, resp));
}
}
// check if Head Teacher is not belong to another class
if (newClass.HeadTeacherID != oldClass.HeadTeacherID && newClass.HeadTeacherID != null)
{
// check if Head Teacher is not belong to another class
if (exist.HeadTeacherExists((int)model.HeadTeacherID))
{
resp.code = 400; //Bad Request
resp.messages.Add(new { HeadTeacherID = "Head teacher is belong to another class" });
return(StatusCode(resp.code, resp));
}
}
// bind value(s)
oldClass.Name = newClass.Name;
oldClass.Year = newClass.Year;
oldClass.GradeID = newClass.GradeID;
oldClass.HeadTeacherID = newClass.HeadTeacherID;
_classService.Update();
return(Ok(oldClass));
}
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));
}
}