Fix "Segmentation fault" for model inheritance (#109)

* Fix "Segmentation fault" for model inheritance

* Fix formatting

Author: mistermij

src/Traits/HasSettings.php

@@ -40,7 +40,7 @@ public function __call($name, $args)
             return $this->settings();
         }
 
-        return call_user_func(get_parent_class($this) . '::__call', $name, $args);
+        return call_user_func(parent::class . '::__call', $name, $args);
     }
 
     abstract public function getSettingsValue(): array;

tests/Models/UsersWithParentModelWithField.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace Glorand\Model\Settings\Tests\Models;
+
+class UsersWithParentModelWithField extends UserWithTextField
+{
+    protected $table = 'users_with_field';
+
+    protected $fillable = ['id', 'name'];
+}

tests/ParentChildSettingsTest.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Glorand\Model\Settings\Tests;
+
+use Glorand\Model\Settings\Tests\Models\UsersWithParentModelWithField;
+use Glorand\Model\Settings\Tests\Models\UserWithField as User;
+
+class ParentChildSettingsTest extends TestCase
+{
+    public function setUp(): void
+    {
+        parent::setUp();
+        $this->model = UsersWithParentModelWithField::first();
+    }
+
+    public function testSettingsForChild()
+    {
+        $testArray = ['a' => 'b'];
+        $this->model->settings = $testArray;
+        $this->model->save();
+        $this->assertEquals($this->model->settings()->all(), $testArray);
+    }
+}