How to display data in symfony2 form collections?

Question

symfony

Good day.
I am creating a crud application in symphony2. There are forms that use collection type. Interested in the question of how to display the already filled values ​​in the collection.
I would like to make a definitive conclusion universally for each form.
Thanks

Answer 1

For those already selected in the collection, use the 'entity' type;

$form->add('name', 'enity', array('query_builder' => ...));