diff --git a/docs/HasManyExample.md b/docs/HasManyExample.md
index ef37677..320e8f5 100644
--- a/docs/HasManyExample.md
+++ b/docs/HasManyExample.md
@@ -2,28 +2,38 @@ has_many Example
 =================
 
 ```php
+<?php
+
 /*** TestPage.php ***/
 use SilverStripe\Forms\GridField\GridField;
-use SilverStripe\Forms\GridField\GridFieldConfig_RecordEditor;
+use SilverStripe\Forms\GridField\GridFieldConfig_RelationEditor;
 use UndefinedOffset\SortableGridField\Forms\GridFieldSortableRows;
 
 class TestPage extends Page
 {
-	private static $has_many = [
-		'TestObjects' => 'TestObject',
-	];
+    private static $has_many = [
+        'TestObjects' => 'TestObject',
+    ];
 
-	public function getCMSFields()
-	{
-		$fields = parent::getCMSFields();
-		
-		$conf = GridFieldConfig_RecordEditor::create(10);
-		$conf->addComponent(new GridFieldSortableRows('SortOrder'));
+    public function getCMSFields()
+    {
+        $fields = parent::getCMSFields();
+        
+        $conf = GridFieldConfig_RelationEditor::create(10);
+        $conf->addComponent(new GridFieldSortableRows('SortOrder'));
 
-		$fields->addFieldToTab('Root.TestObjects', new GridField('TestObjects', 'TestObjects', $this->TestObjects(), $conf));
+        $fields->addFieldToTab(
+            'Root.TestObjects', 
+            GridField::create(
+                'TestObjects', 
+                'TestObjects', 
+                $this->TestObjects(), 
+                $conf
+            )
+        );
 
-		return $fields;
-	}
+        return $fields;
+    }
 }
 
 
@@ -32,15 +42,18 @@ use SilverStripe\ORM\DataObject;
 
 class TestObject extends DataObject
 {
-	private static $db = [
-		'Title' => 'Text',
-		'SortOrder' => 'Int',
-	];
+    private static $db = [
+        'Title' => 'Text',
+        'SortOrder' => 'Int',
+    ];
 
+    private static $indexes = [
+        'SortOrder' => true,
+    ];
     private static $has_one = [
         'Parent' => 'TestPage',
     ];
 
-	private static $default_sort = 'SortOrder';
+    private static $default_sort = 'SortOrder';
 }
 ```