Implement any custom validation logic in the onSelect callback. This example
rejects files with spaces in the name and requires a naming convention.
What you should see: your own validation function runs per file at selection time - rules the built-in validators do not cover.
AjaxUploader.create(element, {
onSelect: function (file) {
if (/\s/.test(file.name)) {
showValidationMessage('Filenames must not contain spaces.');
return false;
}
if (!/^[a-zA-Z]/.test(file.name)) {
showValidationMessage('Filename must start with a letter.');
return false;
}
return true;
}
});