pingwping · March 6, 2023 18:35 · Aug 20, 2014 · Aug 20, 2014
diff --git a/gistfile1.py b/gistfile1.py
@@ -1,3 +1,5 @@
+# REF: http://www.quora.com/How-do-I-create-and-update-embedded-documents-with-MongoEngine
+
 class Comment(EmbeddedDocument):
     content = StringField()
     name = StringField(max_length=120)

diff --git a/gistfile1.py b/gistfile1.py
@@ -0,0 +1,35 @@
+class Comment(EmbeddedDocument):
+    content = StringField()
+    name = StringField(max_length=120)
+
+
+class Post(Document):
+    title = StringField(max_length=120, required=True)
+    author = StringField(required=True)
+    tags = ListField(StringField(max_length=30))
+    comments = ListField(EmbeddedDocumentField(Comment))
+
+
+# Create a post:
+post = Post(title="Quora rocks", author="Ross", tags=['tutorial', 'how-to'])
+post.save()
+
+# Find a post
+post = Post.objects.find(title="Quora rocks").first()
+
+# Create a new comment
+comment = Comment(content="Great post!", name="john")
+
+# Add to comments list and save
+post.comments.append(comment)
+post.save()
+
+# To editing existing comments you can use atomic updates[1] or simply change the comment and call post.save() (this will also do an atomic update).
+
+# Update a comment in place
+post = Post.objects.find(title="Quora rocks").first()
+post.comments[0].name = "John"
+post.save()
+
+# Or update with a set operation
+post = Post.objects.find(title="Quora rocks", comment__name="john").update(set__comment__S__name="John)