bug #5742 [BUG] Fix property_name with CollectionField and Associatio…

…n in Entity (john-dufrene-dev)

This PR was merged into the 4.x branch.

Discussion
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[BUG] Fix property_name with CollectionField and Association in Entity

This PR fix for #5741

Commits
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4c247d4 fix property_name with CollectionField and Association in Entity

src/Field/Configurator/CollectionConfigurator.php

@@ -62,7 +62,7 @@ public function configure(FieldDto $field, EntityDto $entityDto, AdminContext $c
         $field->setFormTypeOptionIfNotSet('allow_delete', $field->getCustomOptions()->get(CollectionField::OPTION_ALLOW_DELETE));
         $field->setFormTypeOptionIfNotSet('by_reference', false);
         $field->setFormTypeOptionIfNotSet('delete_empty', true);
-        $field->setFormTypeOptionIfNotSet('prototype_name', '__'.$field->getProperty().'name__');
+        $field->setFormTypeOptionIfNotSet('prototype_name', '__'.u($field->getProperty())->replace('.', '_').'name__');
 
         // TODO: check why this label (hidden by default) is not working properly
         // (generated values are always the same for all elements)