如何格式化/控制Symfony ChoiceType的输出

Question

Is it possible to iterate over ChoiceType values in Symfony 3? I can setup the values fine, but they just output in big block for which i can't control. I would like to loop over each value and format it/put in table/div/columns etc.

$builder->add('tOptions', ChoiceType::class, array(
    'choices'  => array(
        'one' => true,
        'two' => true,
        'three' => true,
        'four' => true,
        'five' => true,
    ),
    'expanded' => true,
    'multiple' => true,
    'required' => false,
));

Note: I am not outputting in twig, just in PHP.

echo $view['form']->widget($form['tOptions']);

Results in:

<div id="t_options_tOptions">
<input type="checkbox" id="t_options_tOptions_0" name="t_options[tOptions][]" value="0">
<label for="t_options_tOptions_0">one</label>

<input type="checkbox" id="t_options_tOptions_1" name="t_options[tOptions][]" value="1">
<label for="t_options_tOptions_1">two</label>

<input type="checkbox" id="t_options_tOptions_2" name="t_options[tOptions][]" value="2">
<label for="t_options_tOptions_2">three</label>

<input type="checkbox" id="t_options_tOptions_3" name="t_options[tOptions][]" value="3">
<label for="t_options_tOptions_3">four</label>

<input type="checkbox" id="t_options_tOptions_4" name="t_options[tOptions][]" value="4">
<label for="t_options_tOptions_4">five</label>
</div>

How does one iterate over these input options, in order to wrap each in div or split into two even columns etc.

Answer 1

To customize that you'd have to create a custom template for the choices widget. Specifically, you could extend the choice_widget_options.html.php file.

To apply the styling you can follow the Form Theming in PHP documentation. It's worth noting that extending the template with Twig would be simpler.