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Prevent duplicate aliases due to wrongly altered pid

Open on Drupal.org →
Created on 4 June 2019, about 5 years ago
Updated 30 January 2023, over 1 year ago

Problem/Motivation

When migrating aliases from D* to D8, with the "update" option (update all previously-imported content in addition to importing new content), we ended up with duplicates in table `url_alias` (same `source`, `alias`, `langcode`, with different `pid`).

The issue happens when using the core's destination plugin `url_alias`, which triggers a Drupal\Core\Path\AliaslStorage::save(). In case of editing a record with a known pid, this given pid is replaced by mistake.

Proposed resolution

In Drupal\Core\Path\AliaslStorage::save(), simply not assigning to `$pid` the result of the update query execution will prevent theses pid changes and alias duplicates:

$query = $this->connection->update(static::TABLE)
  ->fields($fields)
  ->condition('pid', $pid);
$pid = $query->execute();

would become:

$query = $this->connection->update(static::TABLE)
  ->fields($fields)
  ->condition('pid', $pid);
$query->execute();
🐛 Bug report
Status

Needs work

Version

10.1 ✨

Component
Plugin  →

Last updated 8 days ago

Created by

🇨🇭Switzerland Teastwood

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  • Comment over 1 year ago →
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    The Needs Review Queue Bot → tested this issue. It either no longer applies to Drupal core, or fails the Drupal core commit checks. Therefore, this issue status is now "Needs work".

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