Create form based on EntityType with option to add quantity - forms

Question

I'm trying to setup a Symfony form that will allow a user to select a number of elements adding the wished quantity. I would like to be able to have a FormType which would be somewhere between an EntityType and the IntegerType. Meaning I need to have a list of elements based on a query_builder to select only part of my products, but I don't just want to be able to select the product but say how many I want of a given number of products.
I've been able to create a form based on the options I send. For each product in my array I add an IntegerType field to my form using the builder. This allows me to show a list of products and ask the client the number of elements he wants.
Now the problem I have is adding detailed data from the product in the list as I don't know the forms field names I can't interact with the label. If I could add something allowing me to say that the 'label' could show as raw html, I could concatenate the wished data in the label.
Here is my current form:
class OfferRequestStepMultipleHardwareType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
// instead of haveing set fields I create them based on the $option['step']->getProducts() data
foreach ($options['step']->getProducts() as $product){
$builder->add($product->getId().'-qty', IntegerType::class, [
'mapped' => false,
'attr' => [
'value' => 0,
'class' => 'longlist',
'min' => 0
],
'row_attr' => [
'class' => 'longlist'
],
'label' => $product->getNumber() // ideally I would do some thing like '<div>'.$product->getNumber().'</div><div>'.$product->getDescription().'</div>' and then show it as raw in the form template
]);
}
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'data_class' => OfferRequest::class,
'step' => StepHardware::class,
]);
}
}
The problem is this generates code a bit like this:
<div id="offer_request_step_multiple_hardware">
<div class="longlist"><label for="offer_request_step_multiple_hardware_27-qty" class="required">Product 1</label><input type="number" id="offer_request_step_multiple_hardware_27-qty" name="offer_request_step_multiple_hardware[27-qty]" required="required" value="0" class="longlist"
min="0"></div>
<div class="longlist"><label for="offer_request_step_multiple_hardware_28-qty" class="required">Product 2</label><input type="number" id="offer_request_step_multiple_hardware_28-qty" name="offer_request_step_multiple_hardware[28-qty]" required="required" value="0" class="longlist"
min="0"></div>
<div class="longlist"><label for="offer_request_step_multiple_hardware_29-qty" class="required">Product 3</label><input type="number" id="offer_request_step_multiple_hardware_29-qty" name="offer_request_step_multiple_hardware[29-qty]" required="required" value="0" class="longlist"
min="0"></div>
<div class="longlist"><label for="offer_request_step_multiple_hardware_30-qty" class="required">Product 4</label><input type="number" id="offer_request_step_multiple_hardware_30-qty" name="offer_request_step_multiple_hardware[30-qty]" required="required" value="0" class="longlist"
min="0"></div><input type="hidden" id="offer_request_step_multiple_hardware__token" name="offer_request_step_multiple_hardware[_token]" value="PZaPfxKNSV-TjftRgjAw1K8XCUr7Dvkrp57kWTMBJ64"></div>
I've also tried to create a form theming in the template to change the way the Integer widget show with this:
{% form_theme form _self %}
{% block question %}
<h1>{{ offer.lastStep.Question }}</h1>
{% endblock %}
{% block integer_widget %}
<div class="name_row">
{{ form_label(form)|raw }}
{{ form_errors(form) }}
{{ form_widget(form) }}
{{ form_help(form) }}
</div>
{% endblock %}
Without any success as when I concatenate and try to add the filter "raw" to it, the code is still changed autoescaped. The problem is then I've found information on how to set a specific label for a specific field of a form, but again I generate the form on the go and have no way of knowing the field names (like described here). Any suggestions on how to have this work?
Ideally I would like to be able to create a FormType based on the EntityType which would allow to add an Integer instead of selecting the Entity elements...
Any help would be nice!

Answer 1

Labels in Symfony forms are escaped at some point before the rendering of the template, so applying the twig raw filter won't prevent html entities from being escaped.
What you can do is create a new twig filter, to apply the php function html-entity-decode (following code untested):
Twig/HtmlDecodeExtension.php
<?php
namespace App\Twig;
use Twig\Extension\AbstractExtension;
use Twig\TwigFilter;
class HtmlDecodeExtension extends AbstractExtension
{
public function getFilters()
{
return [
new TwigFilter('htmldecode', [$this, 'htmlDecode']),
];
}
public function htmlDecode($value)
{
return html_entity_decode($value);
}
}
If you use the default configuration with services autowiring, you don't have to register the new extension; in the other case, do it in config/services.yaml
Now you can use the filter in your form template instead of raw, and put whatever html you like in the label:
{% form_theme form _self %}
{% block question %}
<h1>{{ offer.lastStep.Question }}</h1>
{% endblock %}
{% block integer_widget %}
<div class="name_row">
{{ form_label(form)|htmldecode }}
{{ form_errors(form) }}
{{ form_widget(form) }}
{{ form_help(form) }}
</div>
{% endblock %}