Implement simple referral system

Signed-off-by: Florian Pritz <bluewind@xinu.at>

1 files changed, 33 insertions, 0 deletions

diff --git a/application/migrations/003_add_referrers.php b/application/migrations/003_add_referrers.php
new file mode 100644
index 000000000..524e92ff0
--- /dev/null
+++ b/application/migrations/003_add_referrers.php
@@ -0,0 +1,33 @@
+<?php
+defined('BASEPATH') OR exit('No direct script access allowed');
+
+class Migration_Add_referrers extends CI_Migration {
+
+	public function up()
+	{
+		$this->db->query("
+			CREATE TABLE `invitations` (
+				`user` int(8) unsigned NOT NULL,
+				`key` varchar(16) CHARACTER SET ascii NOT NULL,
+				`date` int(11) unsigned NOT NULL,
+				PRIMARY KEY (`key`),
+		KEY `user` (`user`),
+		KEY `date` (`date`)
+			) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin
+		");
+		$this->db->query("
+			ALTER TABLE `users`
+			ADD `referrer` INT(8) UNSIGNED NOT NULL DEFAULT '0'
+		");
+	}
+
+	public function down()
+	{
+		$this->db->query("
+			ALTER TABLE `users`
+			DROP `referrer`
+		");
+		$this->dbforge->drop_table('invitations');
+
+	}
+}