djongo aggregate in python django

Question

I am using mongodb(3.6) in python(3.8.5) django(3.1.5). and i have used djonjo(1.3.3) for mongodb connection. when i have run aggregate query with

model.objects.aggregate({'$graphLookup': {
        'from': 'categories_categories',
        'startWith': 'id',
        'connectFromField': 'sub_category',
        'as': 'SubCategory'
        }
    })

so i am getting error :

 `QuerySet.aggregate() received non-expression(s): {'$graphLookup': {'from': 'categories_categories', 'startWith': 'id', 'connectFromField': 'sub_category', 'as': 'SubCategory'}}.`

Answer 1

等待大神答复