Symfony2 entity field type alternatives to “property” or “__toString()”?

Question

Using Symfony2 entity field type one should specify property option:

$builder->add(\'customers\', \'entity\', array(
    \'multiple\' =>          


        

Answer 1

It seems this can be achievable by adding following block after elseif ($this->labelPath) block in ObjectChoiceList.php.

elseif (is_callable($this->labelPath)) {
  $labels[$i] = call_user_func($this->labelPath, $choice);
}

Haven't tried it though :).