Implement notifications

src/Core/Support/Actor.php

@@ -15,4 +15,9 @@ class Actor
     {
         $this->user = $user;
     }
+
+    public function isAuthenticated()
+    {
+        return (bool) $this->user;
+    }
 }

src/Core/Support/MappedMorphTo.php

@@ -0,0 +1,43 @@
+<?php namespace Flarum\Core\Support;
+
+use Illuminate\Database\Eloquent\Relations\MorphTo;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Model;
+
+class MappedMorphTo extends MorphTo {
+
+	/**
+	 *
+	 * @var string
+	 */
+	protected $types;
+
+	/**
+	 * Create a new morph to relationship instance.
+	 *
+	 * @param  \Illuminate\Database\Eloquent\Builder  $query
+	 * @param  \Illuminate\Database\Eloquent\Model  $parent
+	 * @param  string  $foreignKey
+	 * @param  string  $otherKey
+	 * @param  string  $type
+	 * @param  string  $relation
+	 * @return void
+	 */
+	public function __construct(Builder $query, Model $parent, $foreignKey, $otherKey, $type, $relation, $types)
+	{
+		$this->types = $types;
+
+		parent::__construct($query, $parent, $foreignKey, $otherKey, $type, $relation);
+	}
+
+	/**
+	 * Create a new model instance by type.
+	 *
+	 * @param  string  $type
+	 * @return \Illuminate\Database\Eloquent\Model
+	 */
+	public function createModelByType($type)
+	{
+		return new $this->types[$type];
+	}
+}