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Updated docs regarding ReferenceFields

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Closes #149
This commit is contained in:
Ross Lawley
2011-05-25 12:01:41 +01:00
parent 60c8254f58
commit b1cdd1eb26
2 changed files with 30 additions and 0 deletions
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docs/tutorial.rst
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@@ -152,6 +152,21 @@ We can then store a list of comment documents in our post document::
tags = ListField(StringField(max_length=30))
comments = ListField(EmbeddedDocumentField(Comment))
Handling deletions of references
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The :class:`~mongoengine.ReferenceField` object takes a keyword
`reverse_delete_rule` for handling deletion rules if the reference is deleted.
To delete all the posts if a user is deleted set the rule::
class Post(Document):
title = StringField(max_length=120, required=True)
author = ReferenceField(User, reverse_delete_rule=CASCADE)
tags = ListField(StringField(max_length=30))
comments = ListField(EmbeddedDocumentField(Comment))
See :class:`~mongoengine.ReferenceField` for more information.
Adding data to our Tumblelog
============================
Now that we've defined how our documents will be structured, let's start adding