Pass primary key in success_url in Delete Class view in django

I have a Post model in my models.py

In templates, postdescripition.html, I have below code for delete button, In postdescription.html, I referred post object

<a class=type="submit" href="{% url 'delete' pk=post.id %}" >Delete </a> 

In urls.py

path('posts/<int:pk>/delete',views.Delete_Post.as_view(), name = 'delete') ,

In views.py

class Delete_Post(DeleteView):
     model = Post
     template_name = 'dlt.html'
     # dlt.html have an confirmation button
     # success_url= '/profile/1' -> working 
     #i want 1 to should be replaced by user id
     # reverse_lazy('posts') -> working
     #success_url = reverse_lazy('profile/pk=id')-> not working
      success_url= "/posts/"

After deletion I want to redirect to that user profile page, so I need that user.id.., to pass into the view after deletion , I am using "/posts/" in success_url which redirects me to all posts, that’s working fine

urls.py

  path('profile/<pk>/', views.Profile, name='profile'),

But to get id, I tried

1. request.user.id inside ‘Delete_Post’ class view

request is not defined error

2. object.author.id

object has no attribute author

Note: I implemented login and authentication. So request.user.id gives current user id