leveraging cloudant query to get docs back in the correct order based on properties.timestamp.

[seanbarclay]

@rajrsingh @bradley-holt @bradnoble. Please review and test to make sure docs are coming back in proper order. Thanks!

[isc-rsingh]

having trouble with this. I got an error, modified app.js line 386 to get back a more verbose error message, and see this: "err: {"error":"no_usable_index","reason":"No index exists for this sort, try indexing by the sort fields."}".
@seanbarclay is there some index you created manually that needs to be added to the couchapp in some way?

[seanbarclay]

@rajrsingh I believe this was the index I created:

{
"index": {
"fields": ["properties.timestamp"]
}
}

here's what the doc looks like in my location tracker DB:
https://gist.github.com/seanbarclay/9ee118740df594e7d82d

At some point, I recommend updating the tutorial with the reference to CQ and creating the index.