Internal: Social: Allow save parent post + fix wall listing first posts without parent

assets/vue/components/social/SocialWallPostList.vue

@@ -49,6 +49,7 @@ function listPosts() {
       params: {
         socialwall_wallOwner: user.value['id'],
         'order[sendDate]': 'desc',
+        'exists[parent]': false,
       }
     })
     .then(response => {

src/CoreBundle/Entity/SocialPost.php

@@ -6,6 +6,7 @@ declare(strict_types=1);
 
 namespace Chamilo\CoreBundle\Entity;
 
+use ApiPlatform\Doctrine\Orm\Filter\ExistsFilter;
 use ApiPlatform\Doctrine\Orm\Filter\OrderFilter;
 use ApiPlatform\Doctrine\Orm\Filter\SearchFilter;
 use ApiPlatform\Metadata\ApiFilter;
@@ -67,6 +68,7 @@ use Symfony\Component\Validator\Constraints as Assert;
     security: "is_granted('ROLE_USER')"
 )]
 #[ApiFilter(filterClass: SearchFilter::class, properties: ['parent' => 'exact'])]
+#[ApiFilter(filterClass: ExistsFilter::class, properties: ['parent'])]
 #[ApiFilter(filterClass: OrderFilter::class, properties: ['sendDate'])]
 class SocialPost
 {
@@ -132,6 +134,7 @@ class SocialPost
     #[ORM\OneToMany(targetEntity: self::class, mappedBy: 'parent')]
     protected Collection $children;
 
+    #[Groups(['social_post:write'])]
     #[ORM\ManyToOne(targetEntity: self::class, inversedBy: 'children')]
     #[ORM\JoinColumn(name: 'parent_id', referencedColumnName: 'id', onDelete: 'CASCADE')]
     protected ?SocialPost $parent = null;