public async Task <ActionResult> UpdatePetAsync(Guid petId, JsonPatchDocument <PetDTO> patchDocument)
{
// Ensure pet exists.
var exists = await _familyDemoAPIv2Repository.PetExists(petId);
if (!exists)
{
return(NotFound());
}
var petFromRepo = _familyDemoAPIv2Repository.GetPet(petId).Result; // Obtain record via DbContext query and store in entity.
var petToPatch = _mapper.Map <PetDTO>(petFromRepo); // Map populated entity to DTO.
patchDocument.ApplyTo(petToPatch, ModelState); // Apply (patch) new values to populated DTO.
// Validate model using ControllerBase.
if (!TryValidateModel(petToPatch))
{
return(ValidationProblem(ModelState));
}
_mapper.Map(petToPatch, petFromRepo); // Map new values from patched DTO to populated entity.
await _familyDemoAPIv2Repository.UpdatePet(petFromRepo); // Call repo and update context with with populated entity.
// Return link in header.
return(CreatedAtRoute("UpdatePetAsync",
new { petFromRepo.PetId },
petFromRepo));
}
