How to make ember work with Django REST gis - ember-data

Question

I am currently trying to setup ember to interact with Django's REST Framework using the ember-django-adapter.
This works flawless. But since I started using djangorestframework-gis, ember is not able to process the responses anymore.
I have not found anyone building geoJSON with ember except for: https://gist.github.com/cspanring/5114078 But that does not seem to be the right approach because I do not want to change the data model?
This is the api-response:
{
"type": "FeatureCollection",
"features": [
{
"id": 1,
"type": "Feature",
"geometry": {
"coordinates": [
9.84375,
53.665466308594
],
"type": "Point"
},
"properties": {
"date_created": "2014-10-05T20:08:43.565Z",
"body": "Hi",
"author": 1,
"expired": false,
"anonymous": false,
"input_device": 1,
"image": "",
"lat": 0.0,
"lng": 0.0
}
}
]
}
While ember expects something like:
[{"id":1,
"date_created":"2014-10-05T20:08:43.565Z",
"body":"Hi",
"author":1,
"expired":false,
"anonymous":false,
"input_device":1,
"image":"",
"lat":0,
"lng":0
}
]
My take on this was to write my own Serializer:
import Ember from "ember";
import DS from "ember-data";
export default DS.DjangoRESTSerializer.extend({
extractArray: function(store, type, payload) {
console.log(payload);
//console.log(JSON.stringify(payload));
var features = payload["features"];
var nPayload = [];
for (var i = features.length - 1; i >= 0; i--) {
var message = features[i];
var nmessage = {"id": message.id};
for(var entry in message.properties){
var props = message.properties;
if (message.properties.hasOwnProperty(entry)) {
var obj = {}
nmessage[entry]=props[entry];
}
}
nPayload.push(nmessage);
};
console.log(nPayload); //prints in the format above
this._super(store, type, nPayload);
},
})
But I receive the following error:
The response from a findAll must be an Array, not undefined
What am I missing here? Or is this the wrong approach? Has anyone ever tried to get this to work?
An alternative would be to handle this on the serverside and simply output a regular restframework response and set lat and long in the backend.

Answer 1

This is not a valid answer for the question above. I wanted to share my solution anyways,
just in case anyone ever gets into the same situation:
I now do not return a valid geoJSON, but custom lat, lng values. The following is backend code for django-rest-framework:
Model:
#models/message.py
class Message(models.Model):
def lat(self):
return self.location.coords[1]
def lng(self):
return self.location.coords[0]
And in the serializer:
#message/serializer.py
class MessageSerializer(serializers.ModelSerializer):
lat = serializers.Field(source="lat")
lng = serializers.Field(source="lng")
Ember can easily handle the format.