Handle Request: ChoicesType - forms

Question

So I have this ChoiceType Form that will sort the items:
$sort = $this->createForm(ChoiceType::class, NULL, array(
'choices' => array(
'...' => 'default',
'A-Z' => 'title_up',
'Z-A' => 'title_down',
'Price low to high' => 'price_up',
'Price high to low' => 'price_down',
),
));
I want to use the Choices so that when one of them is selected from the dropdown menu will do this: $products = "SELECT a FROM AppBundle:Product a ORDER BY a.title ASC".
I tried this:
$sort->handleRequest($request);
if($sort->isSubmitted() && $sort->isValid()) {
if (isset($default)) {
$products = "SELECT a FROM AppBundle:Product a ORDER BY a.title ASC";
return $this->render('AppBundle:main:index.html.twig', array('products' => $products, ));
}
}
But $default is not working, since is not defined. I dont know how to access the choices, so I can pass them to an if statement.

Answer 1

I think you need to write something like this:
$sort = $this->createFormBuilder()
->setAction($this->generateUrl('your_process_route_here'))
->setMethod('POST')
->add('select', ChoiceType::class, [
'placeholder' => 'Please select',
'choices' => [
'...' => 'default',
'A-Z' => 'title_up',
'Z-A' => 'title_down',
'Price low to high' => 'price_up',
'Price high to low' => 'price_down',
]
])
To get the value inside the <select> element:
$select = $request->request->get('select'); // this will contain whatever value you've selected from the dropdown
Check if the value is what you expect, and then create the query:
if ('default' == $select){ // or you can use a switch
// create a custom method inside your Repository class containing the SELECT, and call it here
}
That select from ->add('select', ...) will be the name attribute for your <select> html element.