On project I use django-rest-auth for user registration and authentication. Also i added code for facebook login:

```
from allauth.socialaccount.providers.facebook.views import FacebookOAuth2Adapter
from rest_auth.registration.views import SocialLoginView

class FacebookOAuth2AdapterFixed(FacebookOAuth2Adapter):

    def __init__(self):
        pass

class FacebookLogin(SocialLoginView):
    adapter_class = FacebookOAuth2Adapter

```

And in my project urls.py I add 

```
url(r'^rest-auth/facebook/$', FacebookLogin.as_view(), name='fb_login'),

```

But on url localhost:8000/rest-auth/facebook I see form with 2 parameters: Access token(already have) and code.
[![enter image description here](https://i.stack.imgur.com/HwUmg.png)](https://i.stack.imgur.com/HwUmg.png)
 My question is next: Can I login via facebook without this code, and if not, how can I get this code without frontend? How can I check work user authentication/registration or not? 
PS: SocialApp created, facebook app created, app id and app secret added to social app.