how to reverse to the current pk (detail categorie) when i update or delete his fk (one of his categorie child)record ?

#models.py 
#categorie model
class categorie(models.Model):
    label_categorie=models.CharField(max_length=100)
    lab_cat_date_posted=models.DateField(auto_now_add=True)
    author=models.ForeignKey(User, on_delete=models.CASCADE)

    def __str__(self):
        return self.label_categorie

    def get_absolute_url(self): 
        return reverse('manageCat')

#categorie child model
class categorie_child(models.Model):
    label_categorie_fille=models.CharField(max_length=100)
    catF_date_posted=models.DateField(auto_now_add=True)
    label_categorie=models.ForeignKey(categorie,on_delete=models.CASCADE,related_name='catF')
    author=models.ForeignKey(User,on_delete=models.CASCADE)

    def __str__(self):
        return self.label_categorie_fille
    def get_absolute_url(self):
        return reverse('manage_categorie_child',kwargs={'pk': self.pk})

#urls.py 
path('ManageCategorieChild/<int:pk>', ManageCategorieChild.as_view(), name='manage_categorie_child'),
path('UpdateCategorieChild/<int:pk>/edit',edit_categorie_child.as_view(),name='edit-categorie-child'),

#views.py 
#current view (list of categorie child)
class ManageCategorieChild(DetailView):
    model=categorie
    template_name='store/managementCategorieChild.html'
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        pub=categorie.objects.all()
        context['catF'] = pub
        return context
#updating view 
class edit_categorie_child(SuccessMessageMixin,UpdateView):
    model=categorie_child
    template_name='store/update-catego  rieChild.html'
    fields=['label_categorie_fille',]
    success_message='categorie fille updated successfully'

I don’t think I understand what you’re asking here

You want edit_categorie_child to redirect to what URL on a successful post?

If it’s the url named manage_categorie_child, then you can call reverse on that name, passing the label_categorie_id field as the parameter.

(If this is not what you’re looking to do, please provide more details about the situation.)