public IHttpActionResult PostExerciseStudent(ExerciseStudent exerciseStudent)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (String.IsNullOrEmpty(exerciseStudent.Id))
{
exerciseStudent.Id = Guid.NewGuid().ToString("N");
}
_db.ExerciseStudents.Add(exerciseStudent);
try
{
_db.SaveChanges();
}
catch (DbUpdateException)
{
if (ExerciseStudentExists(exerciseStudent.Id))
{
return(Conflict());
}
else
{
throw;
}
}
return(CreatedAtRoute("GetExerciseStudentsById", new { id = exerciseStudent.Id }, exerciseStudent));
}
public IHttpActionResult GetExerciseStudent(string id)
{
ExerciseStudent exerciseStudent = _db.ExerciseStudents.Find(id);
if (exerciseStudent == null)
{
return(NotFound());
}
return(Ok(exerciseStudent));
}
public IHttpActionResult PutExerciseStudent(string id, ExerciseStudent exerciseStudent)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != exerciseStudent.Id)
{
return(BadRequest());
}
var parentInDb = _db.ExerciseStudents
.SingleOrDefault(p => p.Id == exerciseStudent.Id);
if (parentInDb != null)
{
// to prevent error: "Modifying a column with the 'Identity' pattern is not supported. Column: 'CreatedAt'"
exerciseStudent.CreatedAt = parentInDb.CreatedAt;
// Update parent
_db.Entry(parentInDb).CurrentValues.SetValues(exerciseStudent);
try
{
_db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!ExerciseStudentExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
}
ExerciseStudent freshExerciseStudent = _db
.ExerciseStudents
.SingleOrDefault(ex => ex.Id == id);
if (freshExerciseStudent == null)
{
return(NotFound());
}
return(Ok(freshExerciseStudent));
}
public IHttpActionResult DeleteExerciseStudent(string id)
{
ExerciseStudent exerciseStudent = _db.ExerciseStudents.Find(id);
if (exerciseStudent == null)
{
return(NotFound());
}
_db.ExerciseStudents.Remove(exerciseStudent);
try
{
_db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
return(NotFound());
}
return(StatusCode(HttpStatusCode.NoContent));
}
