[Answered ]-Submitting a django form via django-rest-framework and angularjs

It is common practice to submit the data through the API and let the serializer do most of the validation for you. You can then do custom validation if needed. You can take a look here for more information on custom validation if you need it. But it does a pretty good job and I rarely have to write any custom validation.

Some of the problems you may run into with trying to do it through pure django, is that it will mess up your SPA. Doing a POST request will require you to "leave the SPA" and return back to it. Other issues such as CSRF tokens are also a pain in the butt to try and figure out. Best to just use your REST API.