Jade Cannot read property 'length' of undefined in each loop - node.js

Question

I have this code in my controller retrieving an object from mongo and sending it to the client:
index: function(req, res){
List.find({user:req.session.user.id}).exec(function foundLists(error, foundLists) {
if(error) {
return res.json({error:error});
} else {
return res.view({ title:'Lists',lists:foundLists });
}
});
}
In my view I do the following:
extends ../layout
block content
.container
p #{lists}
Which renders:[object Object],[object Object]
If I do p= JSON.stringify(lists)
It renders:
[{"user":"546109c0d640523d1b838a32","name":"third","createdAt":"2014-11-11T19:39:36.966Z","updatedAt":"2014-11-11T19:39:36.966Z","id":"546265f83e856b642e3b3fed"},{"user":"546109c0d640523d1b838a32","name":"forth","createdAt":"2014-11-11T19:42:09.268Z","updatedAt":"2014-11-11T19:42:09.268Z","id":"546266913e856b642e3b3fef"}]
I'm trying to achieve:
#lists
each list in lists
p #{list}
But I get this error:
Cannot read property 'length' of undefined
I'm using Sails and Jade 1.7.0

Answer 1

You have an array of objects, so if you do each list in lists then list is an object. I assume Jade wants a string. If you put p #{list.name} or something similar that should work.
If you want to show everything you can try nesting your loops like
each list in lists
each item in list
p #{item}

Answer 2

This error can occurred when at least one of the items in the lists does not have a list property. You can protect this using an if statement:
each val in lists
if val.list
each item in val
p #{item}