updated create_user_variables migration & created create_login_tokens migration

application/Database/Migrations/20181031062503_create_user_variables.php

@@ -29,10 +29,7 @@ class Migration_create_user_variables extends Migration
 				'type' => 'TEXT',
 			],
 			'created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP',
-			'updated_at' => [
-				'type' => 'DATETIME',
-				'default' => NULL,
-			],
+			'updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP',
 			'system' => [
 				'type' => 'TINYINT',
 				'constraint' => 1,

application/Database/Migrations/20181031063642_create_login_tokens.php

@@ -0,0 +1,47 @@
+<?php
+namespace App\Database\Migrations;
+
+use CodeIgniter\Database\Migration;
+use Config\Aauth as AauthConfig;
+
+class Migration_create_login_tokens extends Migration
+{
+	public function up()
+	{
+		$config = new AauthConfig();
+		$this->forge->addField([
+			'id' => [
+				'type' => 'INT',
+				'constraint' => 11,
+				'unsigned' => TRUE,
+				'auto_increment' => TRUE,
+			],
+			'user_id' => [
+				'type' => 'INT',
+				'constraint' => 11,
+				'default' => 0,
+			],
+			'random_hash' => [
+				'type' => 'VARCHAR',
+				'constraint' => 255,
+			],
+			'selector_hash' => [
+				'type' => 'VARCHAR',
+				'constraint' => 255,
+			],
+			'created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP',
+			'updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP',
+			'expires_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP',
+		]);
+		$this->forge->addKey('id', TRUE);
+		$this->forge->createTable($config->dbTableLoginTokens, TRUE);
+	}
+
+	//--------------------------------------------------------------------
+
+	public function down()
+	{
+		$config = new AauthConfig();
+		$this->forge->dropTable($config->dbTableLoginTokens, true);
+	}
+}