Magento 2.3. How to add data using model?

Question

I have two variants adding data using Model. Which variant is more rignt ?

Especially I want to ask about this $slider->setDataChanges(true);in first variant because I must set up _hasDataChanges = true if I want to save data.

1.Variant

2.Variant

Answer 1

As per Magento standard, the second option is right to add a new record to an entity using the repository.

If you want to update exist then you have to load the record by a primary key using getById()

$slider = $this->sliderRepository->getById('PKID');

$this->sliderRepository->save($slider);