♻️ Factorise la suppression de tags

Pour #8

app/Post.php

@@ -14,16 +14,16 @@ class Post extends Model
     protected $fillable = [
         'content', 'image', 'date_post', 'user_id'
     ];
-    
+
     /**
      * The attributes that should be hidden for arrays.
      *
      * @var array
      */
     protected $hidden = [
-    
+
     ];
-    
+
     /**
      * The attributes that should be cast to native types.
      *
@@ -32,4 +32,15 @@ class Post extends Model
     protected $casts = [
         'date_post' => 'datetime',
     ];
+
+    /**
+     * Delete this posts tags
+     */
+    public function deleteTags()
+    {
+        $tags_to_delete = PostsTag::where('post_id', $this->id)->get();
+        foreach ($tags_to_delete as $tag_to_delete) {
+            $tag_to_delete->delete();
+        }
+    }
 }