/**
* Use to populate a form field. Loads the field's value from
* flashed input data, if that's not present it loads the value
*
* <code>
* // Get the "email" item from the form's field data array
* $email = ExampleForm::get( 'email' );
*
* // Return a default value if the specified item doesn't exist
* $email = ExampleForm::get( 'email', 'not listed' );
* </code>
*
* @param string $key
* @param mixed $default
* @return mixed
*/
public static function populate($field_name, $default = null)
{
// prevent need to manually load input when populating forms
if (empty(static::$field_data)) {
static::unserialize_from_session();
}
// return input flash data, fallback on persistent for data, fallback on default
return Input::old($field_name, static::get($field_name, $default));
}
