Custom Validation about angular-autofields-bootstrap HOT 2 CLOSED

$autofieldsProvider.registerHandler('upload', function(directive, field, index) {
    //Generates a field container, label, and input element with the html provided
    var fieldElements = $autofieldsProvider.field(directive, field, '<input/>', {
        //A list of attributes to be added to the input element (ngModel, name and id are included by default)
        //required should be added via field.attr.required
        type: 'file',
        ngfSelect: '',
        accept: '$schema['+index+'].accept',
        ngfMaxSize: '$schema['+index+'].maxSize'
    });

    // Create an element and set the attributes using injected values $form and $property_clean
    var el = angular.element('<i>File too large</i>')
    $autofieldsProvider.setAttributes(directive, field, el, {
        ngShow: '$form.$property_clean.$error.maxSize'
    });

    //Append custom validation
    fieldElements.fieldContainer.append(el);

    return fieldElements.fieldContainer;
});