public async Task <ActionResult> PatchSubject(Guid subjectId, [FromBody] JsonPatchDocument <SubjectToUpdate> patchDocument)
{
if (patchDocument == null)
{
return(BadRequest());
}
var subjectFromRepo = await _repository.GetSubjectAsync(subjectId);
if (subjectFromRepo == null)
{
return(NotFound());
}
var subjectToPatch = _mapper.Map <SubjectToUpdate>(subjectFromRepo);
patchDocument.ApplyTo(subjectToPatch, ModelState);
if (!TryValidateModel(subjectToPatch))
{
return(ValidationProblem());
}
_mapper.Map(subjectToPatch, subjectFromRepo);
_repository.UpdateSubject(subjectFromRepo);
await _repository.SaveAsync();
return(NoContent());
}