Is there a way to model recursive Schemas?

[trglin88]

Heres an abstract example of what I want to do:

var Task = new Schema({
title : String,
body : String,
date : Date,
subtasks: [Tasks]
});

Is this possible in mongoose?

[Guillermo Rauch]

By design, it might work. There's no tests for this. I have `Schema#add` in there for this purpose, to produce recursive references:

var Tasks = new Schema();

Tasks.add({

   title     : String

 , subtasks  : [Tasks]

});

You're welcome to try it out, run into problems, and submit patches/feedback

Thanks!

--
Guillermo Rauch
http://devthought.com

[Lacek]

Thanks Rauch and Tim.

I at first defined the schema using the constructor directly like:

var Tasks = new Schema({

   title     : String

 , subtasks  : [Tasks]

});

Then I got "typeerror cannot call method 'path' of undefined" when updating the object nested in the array.

With Rauch's suggestion it works like a charm.

I know this is a pretty old post but I wish people fallen in the same trap can search the the post easily.

Tim於 2012年10月6日星期六UTC+8上午9時23分27秒寫道：

I know it's an old post, but can confirm you still need to do .add with recursive schemas having spent last hour wondering why child array was returned as Array[] instead of MongooseDocumentArray.