diff --git a/src/Model/Blog.php b/src/Model/Blog.php
index fa2c936..15bae2d 100644
--- a/src/Model/Blog.php
+++ b/src/Model/Blog.php
@@ -142,20 +142,18 @@ class Blog extends Page implements PermissionProvider
         Requirements::css(BLOGGER_DIR . '/css/cms.css');
         Requirements::javascript(BLOGGER_DIR . '/js/cms.js');
 
-        $self =& $this;
-
-        $this->beforeUpdateCMSFields(function ($fields) use ($self) {
-            if (!$self->canEdit()) {
+        $this->beforeUpdateCMSFields(function ($fields) {
+            if (!$this->canEdit()) {
                 return;
             }
 
             $categories = GridField::create(
                 'Categories',
                 _t('Blog.Categories', 'Categories'),
-                $self->Categories(),
+                $this->Categories(),
                 GridFieldCategorisationConfig::create(
                     15,
-                    $self->Categories()->sort('Title'),
+                    $this->Categories()->sort('Title'),
                     BlogCategory::class,
                     'Categories',
                     'BlogPosts'
@@ -165,10 +163,10 @@ class Blog extends Page implements PermissionProvider
             $tags = GridField::create(
                 'Tags',
                 _t('Blog.Tags', 'Tags'),
-                $self->Tags(),
+                $this->Tags(),
                 GridFieldCategorisationConfig::create(
                     15,
-                    $self->Tags()->sort('Title'),
+                    $this->Tags()->sort('Title'),
                     BlogTag::class,
                     'Tags',
                     'BlogPosts'
diff --git a/src/Model/BlogPost.php b/src/Model/BlogPost.php
index 9e70df0..043fc55 100644
--- a/src/Model/BlogPost.php
+++ b/src/Model/BlogPost.php
@@ -58,14 +58,14 @@ class BlogPost extends Page
     private static $db = array(
         'PublishDate' => 'Datetime',
         'AuthorNames' => 'Varchar(1024)',
-        'Summary'     => 'HTMLText',
+        'Summary'     => 'HTMLText'
     );
 
     /**
      * @var array
      */
     private static $has_one = array(
-        'FeaturedImage' => 'SilverStripe\\Assets\\Image',
+        'FeaturedImage' => 'SilverStripe\\Assets\\Image'
     );
 
     /**
@@ -74,7 +74,7 @@ class BlogPost extends Page
     private static $many_many = array(
         'Categories' => 'SilverStripe\\Blog\\Model\\BlogCategory',
         'Tags'       => 'SilverStripe\\Blog\\Model\\BlogTag',
-        'Authors'    => 'SilverStripe\\Security\\Member',
+        'Authors'    => 'SilverStripe\\Security\\Member'
     );
 
     /**
@@ -83,7 +83,7 @@ class BlogPost extends Page
     private static $defaults = array(
         'ShowInMenus'     => false,
         'InheritSideBar'  => true,
-        'ProvideComments' => true,
+        'ProvideComments' => true
     );
 
     /**
@@ -112,7 +112,7 @@ class BlogPost extends Page
      */
     private static $casting = array(
         'Excerpt' => 'HTMLText',
-        'Date' => 'SS_Datetime'
+        'Date' => 'DBDatetime'
     );
 
     /**