Bug: Undefined data not handled in DataReader

[Steven]

In Kendo.all.js line 5123, call to get the data from the datasource is performed, but there is no check to see if the data returned is undefined.

I put in a temporary fix, but it may not be the proper way, but at least it stops Kendo from crashing.  I am posting it here to let someone know:

that.data = function(data) {

    var record,

        getter,

        idx,

        length,

        modelInstance = new that.model();

 

    data = dataFunction(data);

 

    if( isEmptyObject(data) )   // Added this fix to prevent errors if no data was returned

        return {};

         

    if (!isEmptyObject(getters) ) {

        for (idx = 0, length = data.length; idx < length; idx++) {

            record = data[idx];

            for (getter in getters) {

                record[getter] = modelInstance._parse(getter, getters[getter](record));

            }

        }

    }

 

    return data;

}

[Alexander Valchev]

Hi Steven,

As an alternative you could perform a simple check in the data function of the schema. For example:

dataSource: {
     schema: {
         data: function(data) {
             //data - the incoming data
             if (data && data.foo) {
                 return data.foo;
             }
             return [];
         }
     }
}

I suggest to take a look at this forum topic too as it discusses similar scenario.

Regards,
Alexander Valchev
the Telerik team