Choice field default value
<p>I have the following form:</p>

<pre><code>public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
    -&gt;add('type', ChoiceType::class, array(
        'expanded' =&gt; true,
        'multiple' =&gt; false,

        'choices' =&gt; array(
            'Friend' =&gt; 'friend',
            'Guide' =&gt; 'guide'
        )
    ));
}
</code></pre>

<p>How can I make <em>'Friend'</em> checkbox to be checked by default when the form is rendered ?</p>