From 9e80da705a8dae9336be7df02169f36607769fb8 Mon Sep 17 00:00:00 2001
From: Calgary Michael <cseth.michael@gmail.com>
Date: Fri, 2 Feb 2018 21:47:04 -0600
Subject: [PATCH 1/2] removed usage of 'pushAll' operator

---
 mongoengine/queryset/transform.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/mongoengine/queryset/transform.py b/mongoengine/queryset/transform.py
index 3eadaf64..a9874ddf 100644
--- a/mongoengine/queryset/transform.py
+++ b/mongoengine/queryset/transform.py
@@ -335,7 +335,7 @@ def update(_doc_cls=None, **update):
                 value = {key: value}
         elif op == 'addToSet' and isinstance(value, list):
             value = {key: {'$each': value}}
-        elif op == 'push':
+        elif op in ('push', 'pushAll'):
             if parts[-1].isdigit():
                 key = parts[0]
                 position = int(parts[-1])
@@ -345,7 +345,13 @@ def update(_doc_cls=None, **update):
                     value = [value]
                 value = {key: {'$each': value, '$position': position}}
             else:
-                value = {key: value}
+                if op == 'pushAll':
+                    op = 'push'  # convert to non-deprecated keyword
+                    if not isinstance(value, (set, tuple, list)):
+                        value = [value]
+                    value = {key: {'$each': value}}
+                else:
+                    value = {key: value}
         else:
             value = {key: value}
         key = '$' + op

From 38fdf264051430babc8e324f878dc265471b4dea Mon Sep 17 00:00:00 2001
From: Calgary Michael <cseth.michael@gmail.com>
Date: Sun, 4 Feb 2018 10:23:50 -0600
Subject: [PATCH 2/2] added tests for push and push_all

---
 tests/queryset/transform.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tests/queryset/transform.py b/tests/queryset/transform.py
index 20ab0b3f..20a0c278 100644
--- a/tests/queryset/transform.py
+++ b/tests/queryset/transform.py
@@ -51,6 +51,17 @@ class TransformTest(unittest.TestCase):
         update = transform.update(DicDoc, pull__dictField__test=doc)
         self.assertTrue(isinstance(update["$pull"]["dictField"]["test"], dict))
 
+    def test_transform_update_push(self):
+        """Ensure the differences in behvaior between 'push' and 'push_all'"""
+        class BlogPost(Document):
+            tags = ListField(StringField())
+
+        update = transform.update(BlogPost, push__tags=['mongo', 'db'])
+        self.assertEqual(update, {'$push': {'tags': ['mongo', 'db']}})
+
+        update = transform.update(BlogPost, push_all__tags=['mongo', 'db'])
+        self.assertEqual(update, {'$push': {'tags': {'$each': ['mongo', 'db']}}})
+
     def test_query_field_name(self):
         """Ensure that the correct field name is used when querying.
         """