Nullable boolean fields are always converted to true or false

[Matt]

Hi there,

I'm using a datasource with a grid an I need to be able to handle null values in boolean fields differently from false.  However, when the DataSource gets its data and runs through convertRecords() it converts all the boolean fields to true or false even if I've marked the field as nullable:true.  Is there a way to get around this and actually show nulls for boolean fields?

Here's a JS fildde with a nullable boolean being converted to false: http://jsfiddle.net/mtrichards26/wCd4T/21/ 

Thanks!
Matt

[Rosen]

Hello Matt,

As you may know the nullable options is used when a new item is created.
However, you may change the way data types are converted by default by setting a parse method through the field's declaration. For example:

IsTesting:{
    type:"boolean",
    parse: function(value) {
        if (value != null) {
            return value || false;
        }
        return value;
    },
    nullable:true
}

Greetings,
Rosen
the Telerik team