Here is my Extjs onReady function

```
var store = new Ext.data.Store({
                                  proxy: new Ext.data.HttpProxy({
                                  url: '/loginjson.json'
                                  }),

                                  reader: new Ext.data.JsonReader(
                                  {root: 'row', fields:['dblist']}
                                    )
                    });
            store.load();

```

and here I'm using it in my FormPanel like

```
renderTo: document.getElementById("loginform"),
                                    title: "Login Form",
                                    items: [{
                                        xtype: 'combo',
                                        fieldLabel: 'genre',
                                        name: 'genre',
                                        store: store,
                                        autoLoad: true,
                                        displayField: 'dblist',
                                    }

```

and JSON URL of django returns like this

```
http://localhost:8000/loginjson.json

{"row": [{"dblist": "datalist"}]}

```

but my combobox is not filled I'm missing somewhere on extJS but couldn't found.