following @bagerard point and remove the extra aggregation_update parameter

Author: idocyabra

docs/guide/querying.rst

@@ -236,7 +236,7 @@ keyword argument::
 Update with Aggregation Pipeline
 -----------
 It is possible to provide a raw :mod:`PyMongo` aggregation update parameter, which will
-be integrated directly into the update. This is done using the ``aggregation_update=True`` and ``__raw__``
+be integrated directly into the update. This is done by using ``__raw__`` field and value of array
 pipeline
 `Update with Aggregation Pipeline <https://docs.mongodb.com/manual/reference/method/db.collection.updateMany/#update-with-aggregation->`_
 keyword argument::
@@ -245,7 +245,6 @@ keyword argument::
     Page.objects(tags='coding').update(__raw__=[
         {"$set": {"tags": {"$concat": ["$tags", "is fun"]}}}
         ],
-        aggregation_update=True,
     )
 
 .. versionadded:: 0.4

mongoengine/queryset/base.py

@@ -524,7 +524,6 @@ def update(
         write_concern=None,
         read_concern=None,
         full_result=False,
-        aggregation_update=False,
         **update,
     ):
         """Perform an atomic update on the fields matched by the query.
@@ -540,7 +539,6 @@ def update(
         :param read_concern: Override the read concern for the operation
         :param full_result: Return the associated ``pymongo.UpdateResult`` rather than just the number
             updated items
-        :param aggregation_update: Update with Aggregation Pipeline https://docs.mongodb.com/manual/reference/method/db.collection.updateMany/#update-with-aggregation-pipeline
         :param update: Django-style update keyword arguments
 
         :returns the number of updated documents (unless ``full_result`` is True)
@@ -553,11 +551,7 @@ def update(
 
         queryset = self.clone()
         query = queryset._query
-        if aggregation_update:
-            if "__raw__" not in update:
-                raise OperationError(
-                    "Currently aggregation_update works only with __raw__ value"
-                )
+        if "__raw__" in update and isinstance(update["__raw__"], list):
             update = [
                 transform.update(queryset._document, **{"__raw__": u})
                 for u in update["__raw__"]

tests/queryset/test_queryset.py

@@ -2233,7 +2233,6 @@ class BlogPost(Document):
 
         BlogPost.objects(slug="test").update(
             __raw__=[{"$set": {"slug": {"$concat": ["$slug", " ", "$slug"]}}}],
-            aggregation_update=True,
         )
         post.reload()
         assert post.slug == "test test"
@@ -2245,7 +2244,6 @@ class BlogPost(Document):
                     "$set": {"slug": {"$concat": ["When", " ", "$slug"]}}
                 },  # When test test it
             ],
-            aggregation_update=True,
         )
         post.reload()
         assert post.slug == "When test test it"