Django RF 405 error for POST request on APIView without ending slash

Question

I'm pretty new to Django Rest Framework and I've been investigating this issue but can't find any solution. I'm pretty sure it will be a small detail but I'm out of idea.

I'm using DRF for a project. The team made the choice to not end URL paths with a ' / '. I have an endpoint linked to an APIView with a POST method. We want to do some stuff with a body sent in this POST. However calling it brings (Postman response):

405 Method Not allowed

{
    "detail": "Method \"POST\" not allowed."
}

Putting a ' / ' at the end of the URL path works (Postman response for normal behavior):

{
    "success": True,
    "message": "A message returned by the function in APIView"
}

urls.py

from django.urls import path, include
from runbook import views
from rest_framework.routers import DefaultRouter


router = DefaultRouter(trailing_slash=False)

router.register(r'my_objects', views.ObjectViewset)

urlpatterns = [
    path('', include(router.urls)),
    path('my_objects/myFunction',
         views.MyFunctionView.as_view(),
         name="my-function")

views.py

class MyFunctionView(APIView):
    """
    """
    def post(self, request, format=None):
        try:
            MyObject.objects.get(slug=slugify(request.data['candidate_name']))
        except MyObject.DoesNotExist:
            return Response(boolean_response(False))
        else:
            return Response(boolean_response(True))

What I read and tried:

Wrong type of view: 405 "Method POST is not allowed" in Django REST framework ; 405 “Method POST is not allowed” in Django REST framework
Use of slashes: 405 POST method not allowed ; How can I make a trailing slash optional on a Django Rest Framework SimpleRouter
Potential indentation problem: django rest framework post method giving error "Method "POST" not allowed"
Permissions: https://www.thetopsites.net/article/53705361.shtml
APPEND_SLASH in settings.py: DRF post url without end slash ; https://docs.djangoproject.com/en/2.0/ref/settings/#append-slash

I also tried to:

Call with a '/' at the end even though the urls.py doesn't have one (new error: 404 Not found because URL is not the same)
Test in terminal instead of Postman (same errors)

Is it possible to make this request without '/'? Am I using Django tools wrong? Is there any subtlety I am not seeing ? So if anyone has a solution, advice or idea. Thank you !

The `DefaultRouter` is creating some URL patterns for `ObjectViewset` class which are conflicting with `my_objects/myFunction` path — JPG, Sep 21 '20 at 13:41
@ArakkalAbu you are right. I tested and indeed the router takes the priority and Django never "reach" the other pattern. I just learn that the order is important in ```urlpatterns``` thank you ! — Rfayolle, Sep 21 '20 at 15:31

score 0 · Accepted Answer · answered Sep 22 '20 at 07:18

So as said by @Arakkal Abu in the comment the router conflict with the other path in urlpatterns

Solution: send the router include at the end of the urlpatterns

router = DefaultRouter(trailing_slash=False)

router.register(r'my_objects', views.ObjectViewset)
urlpatterns = [
path('my_objects/myFunction',
     views.MyFunctionView.as_view(),
     name="my-function"),
path('', include(router.urls))
]

Indeed my_objects/myFunction is considered as part of the route my_objects/ where my_objects/myFunction/ is considered as a separate route and that's why it was working.

Django RF 405 error for POST request on APIView without ending slash

1 Answers1