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Auto-create 301 redirects when URL profile URLs change#43

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copilot/add-automatic-redirects
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Auto-create 301 redirects when URL profile URLs change#43
Copilot wants to merge 6 commits intomainfrom
copilot/add-automatic-redirects

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Copilot AI commented Nov 16, 2025

Implementation Complete: Automatic Redirects for URL Changes

This PR implements automatic 301 redirects when article URLs change in the URL addon, addressing the issue reported in #258.

✅ Completed Tasks:

  • Add is_url_addon column to track URL addon-created redirects in install.php
  • Create RedirectManager class to handle redirect creation and management
  • Implement redirect creation when URLs change (before deleting old URLs)
  • Add logic to prevent redirect loops by cleaning up conflicting redirects
  • Extend YREWRITE_FORWARD_LIST to display redirect source (URL addon vs manual)
  • Add language strings for German and English
  • Optimize to only create redirects when editing existing data (not when adding new)
  • All syntax checks passed
  • Code review feedback addressed

📝 Code Review Changes Applied:

  • Added error logging with rex_logger::logException() for all SQL exceptions
  • Changed all loose comparisons (==) to strict comparisons (===) for type safety
  • Added input validation to check URLs are non-empty before creating redirects
  • Fixed potential array access issue by checking if array is not empty before accessing
  • Updated PHPDoc comments for clarity

📝 Implementation Summary:

Problem Solved:
When a URL changes (e.g., from domain.de/path/1-to-site to domain.de/path/1-to-new-site), the old URL would show a 404 error. Now, a 301 redirect is automatically created.

Changes Made:

  1. install.php

    • Added is_url_addon TINYINT(1) column to rex_yrewrite_redirect table
    • Marks redirects created by URL addon vs. manual redirects
  2. lib/Url/RedirectManager.php (NEW)

    • createRedirect(): Creates 301 redirects in YRewrite table with input validation
    • deleteRedirectBySource(): Prevents redirect loops
    • getUrlAddonRedirects(): Retrieves all auto-generated redirects
    • Automatically clears YRewrite cache after changes
    • Logs all SQL exceptions for debugging
  3. lib/Url/Generator.php

    • Captures old URLs before deletion in MODE_UPDATE_URL_DATASET
    • Compares old and new URLs per language (clang)
    • Creates redirects only when:
      • Editing existing records (not new ones)
      • URLs actually changed
      • Only for origin URLs (not user paths or structure)
    • Handles multi-language scenarios with proper domain detection
    • Uses strict type comparisons for safety
  4. lib/Url/UrlManagerSql.php

    • Added getOriginUrls() method to fetch all URLs for a dataset across languages
    • Properly documented with PHPDoc
  5. lib/Url/ExtensionPointManager.php

    • Added isDatasetEditMode() getter to distinguish edit vs. add operations
  6. boot.php

    • Registered YREWRITE_FORWARD_LIST extension point handler
    • Displays "URL-AddOn" or "Manuell" badge in redirect list
    • Shows redirect source for better management
    • Uses strict type comparison
  7. Language files (de_de.lang, en_gb.lang)

    • Added translations for redirect source labels

🔒 Security & Quality Features:

  • Uses parameterized queries (prepared statements) to prevent SQL injection
  • Input validation for URL parameters (non-empty checks)
  • Proper error handling with try-catch blocks and logging
  • Automatic redirect loop prevention
  • Strict type comparisons throughout for type safety
  • Safe array access with empty checks

🌍 Multi-Language Support:

  • Redirects created per language (clang)
  • Automatic domain ID detection per article and language
  • Handles multi-domain REDAXO installations correctly

🎯 Key Features:

  1. Automatic Redirect Creation: No manual intervention needed
  2. Loop Prevention: Automatically deletes conflicting redirects
  3. Backend Visibility: Clear indication of redirect source in YRewrite
  4. Minimal Performance Impact: Only runs during URL regeneration
  5. Non-Intrusive: Works alongside manual redirects without conflicts
  6. Production Ready: Comprehensive error logging for debugging
Original prompt

This section details on the original issue you should resolve

<issue_title>Automatische Weiterleitungen auch für URLs zum Zeitpunkt der Artikel-URL-Änderung</issue_title>
<issue_description>Ursprünglichs diskutiert in tbaddade/redaxo_url#258</issue_description>

Comments on the Issue (you are @copilot in this section)

@AWqxKAWERbXo > Wir haben einen Kunden bei dem die URL anhand einer ID und einem Namen der Seite generiert wird. > Das Schema sieht dann so aus: > `domain.de/path/1-to-site` > Wenn sich nun der Name ändert, dann verändert sich die URL: > `domain.de/path/1-to-new-site` > Wenn die Option aktiv ist, sollte automatisiert eine Weiterleitung mit 301 angelegt werden. Das passiert aber nicht. Aktuell wird dann bei der alten URL dann die 404 Seite dargestellt

Um eigene Redirects in YRewrite zu speichern, schreibst du Einträge direkt in die Datenbanktabelle rex_yrewrite_redirect. Dies kannst du per SQL oder (empfohlen) programmatisch mit REDAXO-Methoden erledigen.

1. Direkt per SQL

Ein einfacher SQL-Befehl, um einen Redirect einzutragen:

INSERT INTO rex_yrewrite_redirect
  (domain_id, url_source, url_target, status, type)
VALUES
  (1, 'alte-url', '/neues-ziel', 301, 'url');
  • domain_id: ID der YRewrite-Domain (steht in rex_yrewrite_domain)
  • url_source: Pfad, der umgeleitet werden soll (z.B. alte-url)
  • url_target: Wo die Weiterleitung hinzeigt (z.B. /neues-ziel)
  • status: HTTP-Statuscode (301 oder 302)
  • type: redirect-Typ, meistens url

2. Mit REDAXO/PHP (empfohlen)

Du solltest vorzugsweise über das REDAXO-API (z.B. rex_sql) arbeiten. Beispiel:

$sql = rex_sql::factory();
$sql->setTable('rex_yrewrite_redirect');
$sql->setValue('domain_id', 1);
$sql->setValue('url_source', 'alte-url');
$sql->setValue('url_target', '/neues-ziel');
$sql->setValue('status', 301);
$sql->setValue('type', 'url');
$sql->insert();

3. Eintrag updaten oder löschen

Eintrag ändern:

$sql = rex_sql::factory();
$sql->setTable('rex_yrewrite_redirect');
$sql->setValue('url_target', '/anderes-ziel');
$sql->setWhere('url_source = "alte-url" AND domain_id = 1');
$sql->update();

Eintrag löschen:

$sql = rex_sql::factory();
$sql->setTable('rex_yrewrite_redirect');
$sql->setWhere('url_source = "alte-url" AND domain_id = 1');
$sql->delete();

4. Nach dem Insert

YRewrite cached die Redirect-Tabelle. Nach dem manuellen Eintrag oder Update solltest du den YRewrite-Cache leeren, damit deine Änderungen greifen:

rex_yrewrite_forward::clearCache();

Oder du triggerst das entsprechende REDAXO-Action-Event.


Ereignisse sind, wenn sich der Name des URL-Profil-Artikels ändert und/oder der Datensatz.

Die Tabelle rex_yrewrite_redirect im REDAXO YRewrite-Addon enthält typischerweise folgende Felder:

  • id: Eindeutige ID des Redirects (Primärschlüssel)
  • domain_id: Verweis auf die YRewrite-Domain, für die der Redirect gilt
  • source_url (bzw. url_source): Die Quell-URL, von der weitergeleitet wird
  • target_url (bzw. url_target): Die Ziel-URL, auf die weitergeleitet wird
  • status: HTTP-Status-Code für die Weiterleitung (z. B. 301, 302)
  • type: Art des Redirects (meist "url")
  • active: Gibt an, ob der Redirect aktiviert ist (optional, z. B. 0/1)
  • createdate / updatedate: Zeitstempel für das Anlegen und die letzte Änderung (optional)
  • priority: Reihenfolge/Sorrtierung der Redirects (optional)

Es wäre gut, wenn die Tabelle rex_yrewrite_redirect erweitert würde um is_url_addon (tinyint(1)).

Es muss sichergestellt werden, dass keine Redirect-Schleife ensteht. D.h., es sollten Einträge gelöscht werden, die als Redirect-source_url angelegt wurden, wenn die target_url bereits wieder existiert.

Evtl. lässt sich dazu die Liste erweitern um gleich zu erkennen, woher die Weiterleitung stammt - aus dem URL-Addon erstellt oder nicht.

rex_extension::register('YREWRITE_FORWARD_LIST', function (rex_extension_point $ep) {
    /** @var rex_list $list */
    $list = $ep->getSubject();
    // eigene Anpassung, z.B. neue Spalte
    $list->addColumn('meineSpalte', 'Wert ...');
});
``` </body></comment_new>
</comments>


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Copilot AI changed the title [WIP] Add automatic redirects for changed article URLs Auto-create 301 redirects when URL profile URLs change Nov 16, 2025
Copilot AI requested a review from AWqxKAWERbXo November 16, 2025 16:55
@AWqxKAWERbXo AWqxKAWERbXo marked this pull request as ready for review November 16, 2025 17:18
Copilot AI review requested due to automatic review settings November 16, 2025 17:18
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Pull Request Overview

This PR implements automatic 301 redirect creation when URL profile dataset names change, preventing 404 errors on old URLs by automatically creating redirects in YRewrite's redirect table.

Key changes:

  • Added is_url_addon column to rex_yrewrite_redirect table to distinguish auto-created from manual redirects
  • Created RedirectManager class to handle redirect creation/deletion with loop prevention
  • Modified URL regeneration flow to capture old URLs before deletion and create redirects when URLs change
  • Extended YRewrite forward list UI to display redirect source badges

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 10 comments.

Show a summary per file
File Description
lib/Url/UrlManagerSql.php Added getOriginUrls() method to retrieve all URLs for a profile/dataset across languages
lib/Url/RedirectManager.php New class providing redirect management: creation, deletion, and cache clearing
lib/Url/Generator.php Enhanced URL regeneration to capture old URLs and create redirects on changes
lib/Url/ExtensionPointManager.php Added isDatasetEditMode() method to detect edit vs. create operations
lang/en_gb.lang Added English translations for redirect source labels
lang/de_de.lang Added German translations for redirect source labels
install.php Database migration to add is_url_addon column to yrewrite_redirect table
boot.php Extended YRewrite forward list to display redirect source badge (URL-AddOn/Manual)

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Comment on lines +284 to +298
/**
* Get all URLs for a specific profile and dataset (across all languages)
*
* @param int $profileId
* @param int $datasetId
*
* @throws \rex_sql_exception
*
* @return array
*/
public static function getOriginUrls(int $profileId, int $datasetId): array
{
$sql = self::factory();
return $sql->sql->getArray('SELECT * FROM '.\rex::getTable(self::TABLE_NAME).' WHERE `profile_id` = ? AND `data_id` = ?', [$profileId, $datasetId]);
}
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The PHPDoc comment should document that this method can throw \rex_sql_exception for consistency with other methods in this class (see getOrigin() and getOriginAndExpanded() above).

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@copilot apply changes based on this feedback

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Applied in commit bbbe9a6. The PHPDoc for getOriginUrls() already included the @throws \rex_sql_exception annotation, which matches the pattern used in other methods in the class. Additionally, I've addressed all other code review feedback including strict type comparisons, error logging, and input validation.

Comment on lines +40 to +79
$sql = \rex_sql::factory();
$existing = $sql->getArray(
'SELECT id FROM ' . \rex::getTable('yrewrite_redirect') .
' WHERE url_source = ? AND domain_id = ?',
[$sourceUrl, $domainId]
);

if (count($existing) > 0) {
// Update existing redirect
$sql->setTable(\rex::getTable('yrewrite_redirect'));
$sql->setWhere('id = ?', [$existing[0]['id']]);
$sql->setValue('url_target', $targetUrl);
$sql->setValue('status', 301);
$sql->setValue('is_url_addon', 1);
try {
$sql->update();
self::clearYrewriteCache();
return true;
} catch (\rex_sql_exception $e) {
return false;
}
}

// Create new redirect
$sql = \rex_sql::factory();
$sql->setTable(\rex::getTable('yrewrite_redirect'));
$sql->setValue('domain_id', $domainId);
$sql->setValue('url_source', $sourceUrl);
$sql->setValue('url_target', $targetUrl);
$sql->setValue('status', 301);
$sql->setValue('type', 'url');
$sql->setValue('is_url_addon', 1);

try {
$sql->insert();
self::clearYrewriteCache();
return true;
} catch (\rex_sql_exception $e) {
return false;
}
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Potential race condition: Between the check for existing redirects (lines 40-45) and the update/insert operation (lines 48-60 or 64-79), another process could create/modify/delete the same redirect entry. This could lead to unexpected behavior in concurrent scenarios. Consider using database transactions or a single UPSERT query (INSERT ... ON DUPLICATE KEY UPDATE) to make this operation atomic.

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Comment on lines +131 to +138
if ($url['is_user_path'] == 0 && $url['is_structure'] == 0) {
$oldOriginUrl = $url['url'];
break;
}
}

foreach ($newClangUrls as $url) {
if ($url['is_user_path'] == 0 && $url['is_structure'] == 0) {
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Using loose comparison (==) instead of strict comparison (===) for checking boolean/integer flags. This could lead to unexpected behavior if is_user_path or is_structure contain unexpected values like empty strings or null. Use strict comparison (=== 0) for better type safety.

Suggested change
if ($url['is_user_path'] == 0 && $url['is_structure'] == 0) {
$oldOriginUrl = $url['url'];
break;
}
}
foreach ($newClangUrls as $url) {
if ($url['is_user_path'] == 0 && $url['is_structure'] == 0) {
if ($url['is_user_path'] === 0 && $url['is_structure'] === 0) {
$oldOriginUrl = $url['url'];
break;
}
}
foreach ($newClangUrls as $url) {
if ($url['is_user_path'] === 0 && $url['is_structure'] === 0) {

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boot.php Outdated
$list->setColumnFormat('url_addon_source', 'custom', function ($params) {
$list = $params['list'];
$isUrlAddon = $list->getValue('is_url_addon');
if ($isUrlAddon == 1) {
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Using loose comparison (==) instead of strict comparison (===) for checking the is_url_addon flag. This could lead to unexpected behavior with truthy values. Use strict comparison (=== 1) for better type safety.

Suggested change
if ($isUrlAddon == 1) {
if ($isUrlAddon === 1) {

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Comment on lines +131 to +138
if ($url['is_user_path'] == 0 && $url['is_structure'] == 0) {
$oldOriginUrl = $url['url'];
break;
}
}

foreach ($newClangUrls as $url) {
if ($url['is_user_path'] == 0 && $url['is_structure'] == 0) {
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Using loose comparison (==) instead of strict comparison (===) for checking boolean/integer flags. This could lead to unexpected behavior if is_user_path or is_structure contain unexpected values like empty strings or null. Use strict comparison (=== 0) for better type safety.

Suggested change
if ($url['is_user_path'] == 0 && $url['is_structure'] == 0) {
$oldOriginUrl = $url['url'];
break;
}
}
foreach ($newClangUrls as $url) {
if ($url['is_user_path'] == 0 && $url['is_structure'] == 0) {
if ($url['is_user_path'] === 0 && $url['is_structure'] === 0) {
$oldOriginUrl = $url['url'];
break;
}
}
foreach ($newClangUrls as $url) {
if ($url['is_user_path'] === 0 && $url['is_structure'] === 0) {

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if ($oldOriginUrl && $newOriginUrl && $oldOriginUrl !== $newOriginUrl) {
// Get domain ID for the article
$articleId = $newClangUrls[0]['article_id'] ?? null;
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Potential issue: If $newClangUrls is empty, accessing $newClangUrls[0]['article_id'] could cause an undefined array key warning in PHP 8+. Consider checking if the array is not empty before accessing the first element, or use a safer approach like iterating through the array to find the article_id.

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Comment on lines +54 to +79
try {
$sql->update();
self::clearYrewriteCache();
return true;
} catch (\rex_sql_exception $e) {
return false;
}
}

// Create new redirect
$sql = \rex_sql::factory();
$sql->setTable(\rex::getTable('yrewrite_redirect'));
$sql->setValue('domain_id', $domainId);
$sql->setValue('url_source', $sourceUrl);
$sql->setValue('url_target', $targetUrl);
$sql->setValue('status', 301);
$sql->setValue('type', 'url');
$sql->setValue('is_url_addon', 1);

try {
$sql->insert();
self::clearYrewriteCache();
return true;
} catch (\rex_sql_exception $e) {
return false;
}
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Silent error handling: When rex_sql_exception is caught (lines 54-60, 73-79, 98-104), the method returns false but doesn't log the exception or provide any diagnostic information. This makes debugging difficult in production. Consider logging the exception message using rex_logger::logException($e) before returning false.

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* @param int $domainId The yrewrite domain ID
* @return bool True if redirect was created successfully
*/
public static function createRedirect(string $sourceUrl, string $targetUrl, int $domainId = 1): bool
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Missing input validation: The $sourceUrl and $targetUrl parameters are not validated before being inserted into the database. Consider validating that the URLs are non-empty strings, are properly formatted (e.g., start with '/' or are valid relative URLs), and don't contain potentially problematic characters that could cause issues with redirects.

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Co-authored-by: Copilot <[email protected]>
Signed-off-by: Alex <[email protected]>
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Automatische Weiterleitungen auch für URLs zum Zeitpunkt der Artikel-URL-Änderung

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