Change sluggable implementation

app/Article.php

@@ -4,18 +4,13 @@ namespace App;
 
 use Illuminate\Database\Eloquent\Model;
 use League\CommonMark\CommonMarkConverter;
-use MartinBean\Database\Eloquent\Sluggable;
+use Cviebrock\EloquentSluggable\Sluggable;
 use Illuminate\Database\Eloquent\SoftDeletes;
 
 class Article extends Model
 {
-    use SoftDeletes;
-    /*
-     * We want to turn the titles into slugs
-     */
     use Sluggable;
-    const DISPLAY_NAME = 'title';
-    const SLUG = 'titleurl';
+    use SoftDeletes;
 
     /**
      * The attributes that should be mutated to dates.
@@ -31,6 +26,20 @@ class Article extends Model
      */
     protected $table = 'articles';
 
+    /**
+     * Return the sluggable configuration array for this model.
+     *
+     * @return array
+     */
+    public function sluggable()
+    {
+        return [
+            'titleurl' => [
+                'source' => 'title'
+            ]
+        ];
+    }
+
     /**
      * Define the relationship with webmentions.
      *