Render a choice field without form - symfony

Question

I often need to render very simple imputs in some of my templates.
I'd like to take advantage of the twig macros & form blocks to render certain HTML inputs without involving the whole Symfony forms machinery.
For example from the controller:
$templateContext = array(
'my_input' = new FormField('my_input', 'choice', array(
'choices' => array('value1', 'value2', 'my_value'),
'value' => 'my_value',
));
);
In the template:
<div>{{ form_widget(my_input) }}</div>
would render:
<div>
<select name="my_input">
<option>value1</option>
<option>value2</option>
<option selected="selected">my_value</option>
</select>
</div>
Is there a simple way to do that ?
Eventually I would also like to be able to reuse these fields elsewhere (like we can reuse form types)

Answer 1

There are many ways to go about this. The easiest would be to write the plain HTML into your twig template.
<form method="post">
<div>
<select name="my_input">
<option>value1</option>
<option>value2</option>
<option selected="selected">my_value</option>
</select>
</div>
</form>
And then in your controller read the values back.
$request = $this->getRequest();
if($request->getMethod() == 'POST'){
$data = $request->get('my_input')
//Do whatever you want with $data
}
If you want you re-use the html, you can build it somewhere in your PHP and pass it into Twig whenever you need it; or you can place it in a separate twig template and read that with the {include ''} command in twig.

Answer 2

Here is what I finally ended up with:
Class MyInput {
public static values = array(
'value1',
'value2',
'my_value',
);
}
class MyInputType extends AbstractType
{
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'choices' => MyInput::$value,
));
}
public function getParent() { return 'choice'; }
public function getName() { return 'my_input_type'; }
}
Field type used from the controller (after having registered it as a service)
public function MyAction(Request $request)
{
$form = $this->createForm('my_input_type');
$form->handleRequest($request);
$templateContext['myForm'] = $form->createView();
// ...
}
Input rendered into the template
<div>{{ form(myForm) }}</div>
To conclude: I've not been able to render an input without the form machinery, but the actual form remains rather simple.

Answer 3

I found my own solution for it since i need to create subforms from existing forms.
create totally empty twig template,
add in it only {{form(form)}}
render this template render()->getContent()
do a preg replace on the result (i do it in js) formView = formView.replace(/<(.*?)form(.*?)>/, '');
Yes yes - i know that regex is not perfect so before someone says it - i say it on my own, change it for youself as it catches "form-group" classes etc as well.
This is just a showcase of my solution