maybe?

alkatorapi/views.py

@@ -4,7 +4,8 @@ from django.template.response import TemplateResponse
 from django.views.decorators.csrf import csrf_exempt
 from django.contrib.admin.views.decorators import staff_member_required
 from django.contrib.auth.models import User as DjangoUser
-from django.contrib.auth import authenticate, login
+from django.contrib.auth import authenticate
+from django.contrib.auth import login as auth_login
 from django.core.mail import send_mail, mail_admins
 from django.utils.datastructures import MultiValueDictKeyError
 from datetime import date, datetime, timedelta
@@ -43,7 +44,8 @@ def register_user(request):
     )
     profile = Profile(user=user, first_name=request.POST['first_name'], last_name=request.POST['last_name'], address=request.POST['address'])
     profile.save()
-    login(request, user)
+    auth_login(request, user)
+    return HttpResponse('{"success":"Úspěšná registrace!"}', content_type='application/json')
 
 
 @csrf_exempt
@@ -53,7 +55,7 @@ def login(request):
     except MultiValueDictKeyError:
         return HttpResponse('{"reason":"Nezadané jméno nebo heslo!"}', status=400, content_type='application/json')
     if user is not None:
-        login(request, user)
+        auth_login(request, user)
         return HttpResponse('{"success":"Úspěšně přihlášen uživatel '+ user.email + '"}', content_type='application/json')
     else:
         return HttpResponse('{"reason":"Nesprávné jméno nebo heslo!"}', status=400, content_type='application/json')