Rest Framework Tutorial IntegrityError creating snippets

Question

I am working my way through the Django Rest Framework tutorial and I am stuck on Part 4. After adding permissions to the views, it says to create a couple of snippets. I logged in through the browsable API and tried to post a snippet like this: ``` { "title": "snippet", "code": "print 123" } ``` When I do I get: IntegrityError at /snippets/ NOT NULL constraint failed: snippets_snippet.owner_id Anyone know what's going on here? ``` Traceback: File "/home/grez/restenv/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response 111. response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/home/grez/restenv/lib/python3.4/site-packages/django/views/decorators/csrf.py" in wrapped_view 57. return view_func(*args, **kwargs) File "/home/grez/restenv/lib/python3.4/site-packages/django/views/generic/base.py" in view 69. return self.dispatch(request, *args, **kwargs) File "/home/grez/restenv/lib/python3.4/site-packages/rest_framework/views.py" in dispatch 403.…

Accepted Answer

I was running through this tutorial tonight and hit the same error. It seems the tutorial is a version or so behind the actual framework maybe? Regardless, I was able to get snippets to save after a bit of research.

Where the tutorial says to do this:

```
def perform_create(self, serializer):
    serializer.save(owner=self.request.user)
```

I switched to this:

```
def pre_save(self, snip):
    snip.owner = self.request.user
```

It seems that that `perform_create` method no longer exists or is called, so the `owner` never gets set, thus the error we saw. I'm not sure if what I did is the correct way of solving the problem, but it seems to work!

Here's a link to the docs where I figured the above out: http://www.django-rest-framework.org/api-guide/generic-views/#genericapiview

Rest Framework Tutorial IntegrityError creating snippets

Solution

Problem