Since  https://jira.mongodb.org/browse/PYTHON-1581, the count method of Cursor is deprecated and the recommended method to get the total count is to use collection.count_documents.

From https://jira.mongodb.org/browse/PYTHON-1667:

cursor = collection.find({"foo": "bar"})
count = cursor.count()

becomes

count = collection.count_documents({"foo": "bar"})

My problem is, given a cursor that was created with a filter, I can get the collection, but AFAIK, I can't get the filter as it is stored in the private __spec attribute.

I'm building a pagination helper that wraps a cursor. I used to write

class PymongoCursorPage(Page):
    """Pager that deals with PyMongo cursor objects."""
    @property
    def item_count(self):
        return self.cursor.count()

Now, I'd need to write something like this:

class PymongoCursorPage(Page):
    """Pager that deals with PyMongo cursor objects."""
    @property
    def item_count(self):
        return self.cursor.collection.count_documents(  <<  filters >> )  # Where do I get this?

I suppose I could wrap all the calls to `find` in my framework to add the filter to the cursor as a new attribute I could then use in my pagination wrapper to pass to collection.count, but that really sucks.

Am I missing something?

Could the filter be made available as a property like the collection?