Try to add placeholder

src/Bundle/ChillPersonBundle/Form/PersonType.php

@@ -20,6 +20,7 @@ use Chill\MainBundle\Form\Type\PickCivilityType;
 use Chill\MainBundle\Form\Type\Select2CountryType;
 use Chill\MainBundle\Form\Type\Select2LanguageType;
 use Chill\MainBundle\Templating\TranslatableStringHelper;
+use Chill\MainBundle\Templating\TranslatableStringHelperInterface;
 use Chill\PersonBundle\Config\ConfigPersonAltNamesHelper;
 use Chill\PersonBundle\Entity\Person;
 use Chill\PersonBundle\Entity\PersonPhone;
@@ -27,6 +28,13 @@ use Chill\PersonBundle\Form\Type\GenderType;
 use Chill\PersonBundle\Form\Type\PersonAltNameType;
 use Chill\PersonBundle\Form\Type\PersonPhoneType;
 use Chill\PersonBundle\Form\Type\Select2MaritalStatusType;
+use Doctrine\ORM\EntityRepository;
+use Doctrine\ORM\QueryBuilder;
+use libphonenumber\PhoneNumberFormat;
+use libphonenumber\PhoneNumberType;
+use libphonenumber\PhoneNumberUtil;
+use Symfony\Bridge\Doctrine\Form\Type\EntityType;
+use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\CallbackTransformer;
 use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
@@ -57,17 +65,21 @@ class PersonType extends AbstractType
 
     protected TranslatableStringHelper $translatableStringHelper;
 
+    private ParameterBagInterface $parameterBag;
+
     /**
      * @param string[] $personFieldsConfiguration configuration of visibility of some fields
      */
     public function __construct(
         array $personFieldsConfiguration,
         ConfigPersonAltNamesHelper $configAltNamesHelper,
-        TranslatableStringHelper $translatableStringHelper
+        TranslatableStringHelperInterface $translatableStringHelper,
+        ParameterBagInterface $parameterBag
     ) {
         $this->config = $personFieldsConfiguration;
         $this->configAltNamesHelper = $configAltNamesHelper;
         $this->translatableStringHelper = $translatableStringHelper;
+        $this->parameterBag = $parameterBag;
     }
 
     public function buildForm(FormBuilderInterface $builder, array $options)
@@ -126,15 +138,43 @@ class PersonType extends AbstractType
         }
 
         if ('visible' === $this->config['phonenumber']) {
-            $builder->add('phonenumber', TelType::class, [
-                'required' => false,
-                // 'placeholder' => '+33623124554' //TODO placeholder for phone numbers
-            ]);
+            $examplePhoneNumber = PhoneNumberUtil::getInstance()
+                ->getExampleNumberForType(
+                    $this->parameterBag->get('chill_main.phone_helper')['default_carrier_code'],
+                    PhoneNumberType::FIXED_LINE
+                );
+
+            $builder
+                ->add(
+                    'phonenumber',
+                    TelType::class,
+                    [
+                        'required' => false,
+                        'attr' => [
+                            'placeholder' => PhoneNumberUtil::getInstance()->format($examplePhoneNumber, PhoneNumberFormat::NATIONAL)
+                        ],
+                    ]
+                );
         }
 
         if ('visible' === $this->config['mobilenumber']) {
+            $examplePhoneNumber = PhoneNumberUtil::getInstance()
+                ->getExampleNumberForType(
+                    $this->parameterBag->get('chill_main.phone_helper')['default_carrier_code'],
+                    PhoneNumberType::MOBILE
+                );
+
             $builder
-                ->add('mobilenumber', TelType::class, ['required' => false])
+                ->add(
+                    'mobilenumber',
+                    TelType::class,
+                    [
+                        'required' => false,
+                        'attr' => [
+                            'placeholder' => PhoneNumberUtil::getInstance()->format($examplePhoneNumber, PhoneNumberFormat::NATIONAL)
+                        ],
+                    ]
+                )
                 ->add('acceptSMS', CheckboxType::class, [
                     'required' => false,
                 ]);

src/Bundle/ChillPersonBundle/config/services/form.yaml

@@ -1,15 +1,15 @@
 services:
-
     Chill\PersonBundle\Form\:
         autowire: true
         autoconfigure: true
         resource: '../../Form/'
 
     Chill\PersonBundle\Form\PersonType:
+        autowire: true
+        autoconfigure: true
         arguments:
             $personFieldsConfiguration: '%chill_person.person_fields%'
             $configAltNamesHelper: '@Chill\PersonBundle\Config\ConfigPersonAltNamesHelper'
-            $translatableStringHelper: '@Chill\MainBundle\Templating\TranslatableStringHelper'
         tags:
             - { name: form.type, alias: '@chill.person.form.person_creation' }