Collection as Symfony Form

Question

I have a collection of entities called FooCollection. This collection is build from a API response. I don't use doctrine. The entities are instance of class Foo and each hold a class named Bar. I generate in the template a formular list like:

<form>
    <ul>
    {% for foo in fooCollection %}
        <li><input type="checkbox" name="foo[{{foo.id}}]" value="1"> <label>{{foo.bar.title}}</label></li>
    {% endfor %}
    </ul>
</form>

Is it possible to use Symfony2 Forms to create this form list and how can I do that?

Here are the example entities and collections:

<?php

class Foo
{
    private $bar;
    private $id;

    public function getId()
    {
        return $this->id;
    }

    public function setBar(Bar $bar)
    {
        $this->bar = $bar;
    }

    public function getBar()
    {
        return $this->bar;
    }
}

class Bar
{
    private $title;

    public function getTitle()
    {
        return $this->title;
    }
}

class FooCollection extends \Doctrine\Common\Collections\ArrayCollection
{
}

Answer 1

You can use the "choice" field type for dropdowns.

Simply SELECT the instances of Foo into an array, and pass this into the choices option of the ChoiceType to populate the dropdown.

See: http://symfony.com/doc/current/reference/forms/types/choice.html#choices