From a25668eba0dbdf004b6fc3a02255a900783e1f97 Mon Sep 17 00:00:00 2001
From: Dylan Wagstaff <dylan@silverstripe.com>
Date: Mon, 29 Jan 2018 15:26:16 +1300
Subject: [PATCH] Remove SS 2.x upgrade code that runs every build

---
 docs/en/Installing.md |  8 +-------
 src/Model/Comment.php | 33 ---------------------------------
 2 files changed, 1 insertion(+), 40 deletions(-)

diff --git a/docs/en/Installing.md b/docs/en/Installing.md
index 0537750..9424bf8 100644
--- a/docs/en/Installing.md
+++ b/docs/en/Installing.md
@@ -12,10 +12,4 @@ Then run a database rebuild by visiting `dev/build`. This will add the required
 
 Out of the box the module adds commenting support to all pages on your site. This functionality can be turned on and off on a per page basis in the CMS under the `Behaviour` tab for a given page. Once the `Allow Comments` checkbox is ticked, republish and view the webpage.
 
-For more configuration options see [Configuration](Configuration.md).
-
-## Upgrading
-
-### Migrating from version SilverStripe 2 installations
-
-This module replaces the built-in commenting system available in SilverStripe 2. Running the `dev/build` task will automatically perform a migration if any comments from these old versions exist.
+For more configuration options see [Configuration](Configuration.md).
\ No newline at end of file
diff --git a/src/Model/Comment.php b/src/Model/Comment.php
index 6b7e610..dacfddf 100755
--- a/src/Model/Comment.php
+++ b/src/Model/Comment.php
@@ -181,39 +181,6 @@ class Comment extends DataObject
         return Injector::inst()->createWithArgs(SecurityToken::class, array($this));
     }
 
-    /**
-     * Migrates the old {@link PageComment} objects to {@link Comment}
-     */
-    public function requireDefaultRecords()
-    {
-        parent::requireDefaultRecords();
-
-        // Upgrade from SilverStripe 2 version if necessary
-        if (DB::get_schema()->hasTable('PageComment')) {
-            $comments = DB::query('SELECT * FROM "PageComment"');
-
-            if ($comments) {
-                while ($pageComment = $comments->next()) {
-                    // create a new comment from the older page comment
-                    $comment = new Comment();
-                    $comment->update($pageComment);
-
-                    // set the variables which have changed
-                    $comment->BaseClass = SiteTree::class;
-                    $comment->URL = (isset($pageComment['CommenterURL'])) ? $pageComment['CommenterURL'] : '';
-                    if ((int) $pageComment['NeedsModeration'] == 0) {
-                        $comment->Moderated = true;
-                    }
-
-                    $comment->write();
-                }
-            }
-
-            DB::alteration_message('Migrated PageComment to Comment', 'changed');
-            DB::get_schema()->dontRequireTable('PageComment');
-        }
-    }
-
     /**
      * Return a link to this comment
      *