datasource fields from response

[mambo_jumbo]

Is there a way to get all fields into datasource from the response body?
I have a single grid bound to a datasource that retrieves different number and name of fields from URL depending on criteria. If I explicitly create fields array in datasource like

isc.DataSource.create({
ID: "singlegrid",
dataURL:"modules/allgrid.xql?CLASS=FTM",
fields:[{name: "distName"},{name:"softwareReleaseVersion"},{name:"systemTitle"}
],
recordXPath:"//record"
});

grid gets populated with fields corrrectly but if I remove

fields:[{name: "distName"},{name:"softwareReleaseVersion"},{name:"systemTitle"}
],

from the above - grid is always empty. Is there a way to tell datasource to get all field names from the response?
Thanks

[Isomorphic]

The fields ultimately need to be provided to either the DataSource or the ListGrid. You can do this dynamically, by making your DataSource call with a DataSource with no fields, then creating a ListGrid with appropriate fields on the fly (after inspecting the response).

Bear in mind that fields are how you tell components what data types to use. A lot of formatting, sorting and other behaviors won't work as expected unless fields exist to convey type information (for example, numbers and dates would just sort in text order).