JSON response: Node server and Sencha - node.js

Question

I'm struggling to understand why I don't get anything in the Sencha view. I believe there is an issue with the json transferred between a server and the Sencha proxy. I have a server coded in node and express and a proxy reader in Sencha. But Sencha cannot read the data.
Server Side:
app.get('/weather/fulljson',function(req, res) {
var obj = {data: [{ from_user: 'world', data: 'inter' }, { from_user: 'world2', data: 'interw' }, { from_user: 'world3', data: 'interw' }]};
jsonP = false;
var cb = req.query.callback;
console.log(cb);
if (cb != null) {
jsonP = true;
res.writeHead(200, {
'Content-Type': 'text/javascript',
'connection' : 'close'
});
} else {
res.writeHead(200, {'Content-Type': "application/x-json"});
}
if (jsonP) {
res.end(cb + "(" + JSON.stringify(obj) + ");" );
}
else { res.end(JSON.stringify(obj));
}
)};
});
Sencha View:
Ext.define('Epic.view.Weather', {
xtype: 'graph',
extend: 'Ext.DataView',
//requires: ['Epic.store.SWeather'],
requires: ['Epic.model.MWeather', 'Ext.data.proxy.JsonP'],
config: {
store: {
autoLoad: true,
fields: ['from_user', 'data'],
proxy: {
type: 'jsonp',
url: 'http://localhost:3000/weather/fulljson',
reader: {
type: 'json',
rootProperty: 'data'
}
}
}
},
itemTpl: '{from_user}'
});
Response in Chrome:
Ext.data.JsonP.callback1({"data":[{"from_user":"world","data":"inter"},{"from_user":"world2","data":"interw"},{"from_user":"world3","data":"interw"}]});
But nothing appear in the view.

Answer 1

Did you check your store after load? is it contains data that you send? If yes - in that case something wrong with your view. You can use debugger tools and get your component and check store.
Also could you shows your model Epic.model.MWeather ? Actually if you have model, you don't have to add fields to your store.