Error in Firefox null using float field

[infernoz]

Hello,

I am using ExtJS 4.1.0. and I am testing out in Firefox 13.0.1

I have a float field set up in one of my models defined as such:

 {name: 'statValueNumber', type: 'float', useNull: true}

I specified the useNull config so null values would not show up as 0.

Inside a gridPanel, I show the value of this field in this manner:

 
.....
initComponent: function() {
        
         Ext.apply(this, {
            columns: {
                items: [
                       .....
                      {header: 'STAT_VALUE_N', dataIndex: 'statValueNumber', flex: 3, editor: 'numberfield', hideable: false},
                      .......
                ],

The grid panel is being populated via data from my server using a store that accepts json formatted data. In some cases this particular field above is null.

Ever since I set the useNull config to true, I am receiving the following repeating error in firefox's firebug:

An invalid or illegal string was specified

The same code in IE does not throw an error.

This seems to just be a nuisance but I'd rather not see it continuously pop up. I dont believe anything is configured incorrectly, I'd just rather not see a value in my panel rather than the default of 0 if this field is null. I could also configure this field to be a String instead, but I'd rather not do this.

Please let me know your thoughts on this error I am getting from firebug

Cheers,

infernoz

[evant]

What JSON are you sending back?

[evant]

Using:

Ext.define('MyModel', {
    extend: 'Ext.data.Model',
    fields: [{
        name: 'f',
        type: 'float',
        useNull: true
    }]
});

Ext.onReady(function(){
    var s = Ext.create('Ext.data.Store', {
        autoLoad: true,
        model: MyModel,
        proxy: {
            type: 'ajax',
            url: 'data.json',
            reader: {
                type: 'json'
            }
        }
    });
    
    setTimeout(function(){
        s.each(function(rec){
            console.log(rec.get('f'));
        });
    }, 1000);
});

[{
    "f": 1
}, {
    "f": null
}]

I don't see any logs.

[infernoz]

Field in json is null, see below in bold -

{"id":"ABC",
"anotherId":"ABC",
"updateId":"DEF",
"startDate":"11/27/2007 05:23:01",
"endDate":null,
"updateDate":"11/27/2007 05:23:01",
"deleteRow":false,
"newRecord":false,
"thirdid":"133",
"idType":"A",
"searchId":"111",
"searchIdType":"YYY",
"statValueString":null,
"statValueNumber":null,
"statValueDate":"05/15/2012 00:00:00",
"statCode":"DTE"}

Just in case its needed, here is the proxy I am using

proxy: {
type: 'ajax',
url: '/myTool/submit.html',
reader: {
type: 'json',
root: 'data'
},
writer: {
type: 'json',
root: 'data',
encode: true,
writeAllFields: true
},
extraParams: {'processorType': 'statistics'}

[evant]

I'm not able to reproduce it, I don't see any logs in the console when I run my example code.