How to configure view to carryout two operations from GET request Django

I’m trying to build a wish list for my website. So I created a view that will

1. render out the wish list and to
2. add items to the wish list – using ajax

Those two tasks are carried out by the same view. Here’s how I did it,

views.py

@login_required(login_url='/login')
def wishlist(request):

    wishes = Wishlist.objects.filter(customer=request.user.customer).prefetch_related(
        Prefetch('product',
                 queryset=Product.objects.prefetch_related(
                     Prefetch(
                         'productimage_set',
                         ProductImage.objects.filter(place='Main Product Image'),
                         to_attr='main_image'
                        ),
                 ),
                 to_attr='wished_dish'
        ),
    )

    # delete wished dish
    if request.method == 'POST':
        dish_to_delete = request.POST.getlist('delete_items')
        print(dish_to_delete)

        Wishlist.objects.filter(pk__in=dish_to_delete).delete()

# question is related to below statements 

    if request.method == 'GET':
        try:
            dish_id = request.GET('dish_id')

            dish = Product.objects.get(id=dish_id)

            wish, created = Wishlist.objects.get_or_create(
                customer=request.user.customer,
                product=dish
            )

            if created:
                return HttpResponse('Dish <b>{}</b> Added to wish list!'.format(dish.name))
            else:
                return HttpResponse('Dish <b>{}</b> is already in your wish list!'.format(dish.name))
        except:
            pass


    context = {
        'wishes': wishes,
    }

    return render(request, 'store/wishlist.html', context)

As you can see I’ve used a try:... except: pass block for GET requests to separate the adding functionality and viewing functionality.

It works fine but is this the optimal way to achieve the intended goal?