How to reference nested JSON objects with PouchDB / BackbonePouch and Underscore.js Templates

[Bernd]

Hi all,

I'm relatively new to CouchDB and PouchDB and App Development in general.

I have started to implement a project as a learning effect and decided after testing different technologies to use a combination of PouchDB / CouchDB.

For the beginning the replicaton to CouchDB is not essential. But I really like this feature.

So right now I have the following setup:

- PouchDB

- BackbonePouch

- Backbone.js

- Underscore.js (especially used to render the HTML code)

- Cordova / Phonegap to deploy on IOS, later maybe Android

I could setup the database and also access the documents via a map query.

Now I'm struggling to reference to the result of the map/reduce query.

It's easy as long as I reference to the first hierarchy like (e.g.: "_id", "name_attribute").

But as soon as I'd like to reference on nested objects it's starting to get tricky. In my data model I have something like 

{ 

"transactions": 

sometransactionid: { 

"name":"Some name", 

"value": 12.23

 }, 

othertransactionid: { 

"name":"Other name", 

"value": 12.23

 } 

}

I use a incremental query to emit each transaction as a key / value pair.

The question is now, how do I reference on this values.

If I understand PouchDB correctly in a "normal" map/reduce query the document is attached to the result and all names of a underscore template directly match to the doc, instead of the key /value pairs.

Do I have here a misunderstanding? How could I solve this problem?

Thanks in advance for your help!

Bernd

[Johannes J. Schmidt]

Hi Bernd,

welcome abord!

When emitting a value on a view, backbone-pouch does not use that value
but uses the doc until you are specifying include_docs to false:
query: {
include_docs: false
}

The Backbone collection will then be populated with your emitted value,
which should be an object.

If this does not help, feel free to open an issue at
https://github.com/jo/backbone-pouch/issues.

Greetings,
Johannes

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