- Finishes import migration

- Updates models
- Improves Notice.js

lib/Models/SubscriberCustomField.php

@@ -1,6 +1,8 @@
 <?php
 namespace MailPoet\Models;
 
+use MailPoet\Util\Helpers;
+
 if(!defined('ABSPATH')) exit;
 
 class SubscriberCustomField extends Model {
@@ -9,4 +11,38 @@ class SubscriberCustomField extends Model {
   function __construct() {
     parent::__construct();
   }
+
+  static function createMultiple($values) {
+    return self::rawExecute(
+      'INSERT IGNORE INTO `' . self::$_table . '` ' .
+      '(custom_field_id, subscriber_id, value) ' .
+      'VALUES ' . rtrim(
+        str_repeat(
+          '(?, ?, ?)' . ', '
+          , count($values)
+        ), ', '
+      ),
+      Helpers::flattenArray($values)
+    );
+  }
+
+  static function updateMultiple($subscribers) {
+    self::createMultiple($subscribers);
+    self::rawExecute(
+      'UPDATE `' . self::$_table . '` ' .
+      'SET value = ' .
+      '(CASE ' .
+      str_repeat(
+        'WHEN custom_field_id = ? AND subscriber_id = ? THEN ? ',
+        count($subscribers)
+      ) .
+      'END) ' .
+      'WHERE subscriber_id IN (' .
+      implode(', ', Helpers::arrayColumn($subscribers, 1)) .
+      ') AND custom_field_id IN (' .
+      implode(', ', array_unique(Helpers::arrayColumn($subscribers, 0)))
+      . ') ',
+      Helpers::flattenArray($subscribers)
+    );
+  }
 }