It is fired when the controller gets its selectable data from the database. Good for filter the allowed values. Important: the controller loads its data on page load and when its CONTROLLER_OBJECT.rebuild function called. (It is not called on CONTROLLER_OBJECT.refresh, and when the user change the selected tab.) Some controller are linked with more than one fields.

Parameters

Returns

Example

The description of the values of the mobile_phone field contains the export_value of a manufacturer. The user has selected the manufacturer before, we want to show only the appropriate phones.

$('page', 'mobile_phones').onLoadData = function(data) {
     var manufacturer = vcc.getFieldValue('manufacturer');

     if (!manufacturer) {
         // if there is no selected manufacturer,
         // let be there no selectable phones
         return [];
     }

     // filter the data array
     return data.filter(function(phone) {
         return phone.description = manufacturer.export_value;
     });
};

Example

The same as above, but do not hide the the inappropriate values, just make them disabled.

$('page', 'mobile_phones').onLoadData = function(data) {
     var manufacturer = vcc.getSelected('manufacturer');

     if (!manufacturer) {
         // if there is no selected manufacturer,
         // let be all phones selectable
         return data;
     }

     // apply a change for every item in the array
     data.forEach(function(phone) {
         phone.disabled = (phone.description !== manufacturer.export_value);
     });

     return data;
};