From c6f0d5e4785571980cd8a53c71c27172cb63c7d0 Mon Sep 17 00:00:00 2001
From: Kushal Mitruka <kushal.mit16@gmail.com>
Date: Sun, 1 Apr 2018 20:11:22 +0530
Subject: [PATCH 1/3] fixed pull queries for embeddeddocumentlistfields

Updated mongoengine.queryset.transform.update method to handle EmbeddedDocuementListField during pull operations in DB using mongoegning ORM
fixed : .udpate(pull__emb_doc__emb_doc_list=doc)
---
 mongoengine/queryset/transform.py | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/mongoengine/queryset/transform.py b/mongoengine/queryset/transform.py
index 05721850..f96f993c 100644
--- a/mongoengine/queryset/transform.py
+++ b/mongoengine/queryset/transform.py
@@ -314,11 +314,17 @@ def update(_doc_cls=None, **update):
             field_classes = [c.__class__ for c in cleaned_fields]
             field_classes.reverse()
             ListField = _import_class('ListField')
-            if ListField in field_classes:
-                # Join all fields via dot notation to the last ListField
+            EmbeddedDocumentListField = _import_class('EmbeddedDocumentListField')
+            if ListField in field_classes or EmbeddedDocumentListField in field_classes:
+                # Join all fields via dot notation to the last ListField or EmbeddedDocumentListField
                 # Then process as normal
+                if ListField in field_classes:
+                    _check_field = ListField
+                else:
+                    _check_field = EmbeddedDocumentListField
+
                 last_listField = len(
-                    cleaned_fields) - field_classes.index(ListField)
+                    cleaned_fields) - field_classes.index(_check_field)
                 key = '.'.join(parts[:last_listField])
                 parts = parts[last_listField:]
                 parts.insert(0, key)

From 65e4fea4efbb2f888bcf15850777457aafbd5720 Mon Sep 17 00:00:00 2001
From: Kushal Mitruka <kushal.mit16@gmail.com>
Date: Tue, 1 May 2018 20:32:38 +0530
Subject: [PATCH 2/3] added test cases for update pull queries

---
 tests/queryset/transform.py | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/tests/queryset/transform.py b/tests/queryset/transform.py
index a043a647..a2636122 100644
--- a/tests/queryset/transform.py
+++ b/tests/queryset/transform.py
@@ -247,7 +247,31 @@ class TransformTest(unittest.TestCase):
         events = Event.objects(location__within=box)
         with self.assertRaises(InvalidQueryError):
             events.count()
+    
+    def test_update_pull_for_list_fields(self):
+        """ 
+        Test added to check pull operation in update for 
+        EmbeddedDocumentListField which is inside a EmbeddedDocumentField
+        """
+        class Word(EmbeddedDocument):
+            word = StringField()
+            index = IntField()
+        
+        class SubDoc(EmbeddedDocument):
+            heading = ListField(StringField())
+            text = EmbeddedDocumentListField(Word)
+        
+        class MainDoc(Document):
+            title = StringField()
+            content = EmbeddedDocumentField(SubDoc)
+        
+        word = Word(word='abc', index=1)
+        update = transform.update(MainDoc, pull__content__text=word)
+        self.assertEqual(update, {'$pull': {'content.text': SON([('word', u'abc'), ('index', 1)])}})
 
-
+        update = transform.update(MainDoc, pull__content__heading='xyz')
+        self.assertEqual(update, {'$pull': {'content.heading': 'xyz'}})
+        
+        
 if __name__ == '__main__':
     unittest.main()

From b1f62a27353a1c2bd8d69b4697dab16caa8056cf Mon Sep 17 00:00:00 2001
From: Kushal Mitruka <kushal.mit16@gmail.com>
Date: Tue, 1 May 2018 21:08:43 +0530
Subject: [PATCH 3/3] added import in tests/queryset/transform.py for SON
 object

---
 tests/queryset/transform.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/queryset/transform.py b/tests/queryset/transform.py
index a2636122..a1f060d5 100644
--- a/tests/queryset/transform.py
+++ b/tests/queryset/transform.py
@@ -1,5 +1,7 @@
 import unittest
 
+from bson.son import SON
+
 from mongoengine import *
 from mongoengine.queryset import Q, transform