Better multilingual support.

src/Form/SettingsForm.php

@@ -113,7 +113,7 @@ final class SettingsForm extends ConfigFormBase {
         '#title' => $this->t('Node'),
         '#type' => 'entity_autocomplete',
         '#target_type' => 'node',
-        '#required' => $required,
+        '#required' => FALSE,
         '#disabled' => !$required,
         '#default_value' => !empty($nodes[$key]) ? $this->entityTypeManager->getStorage('node')->load($nodes[$key]) : NULL,
       ];
@@ -136,7 +136,6 @@ final class SettingsForm extends ConfigFormBase {
 
     }
 
-
     $form['bundles'] = [
       '#title' => $this->t('Node Types managed by frontend routing'),
       '#type' => 'checkboxes',
@@ -285,21 +284,20 @@ final class SettingsForm extends ConfigFormBase {
     $nodes = $this->state->get('frontend_routing.settings') ?? [];
 
     // Update the alias for all related nodes.
-    foreach ($nodes as $key => $node) {
-      if ($node) {
-        $node = $this->entityTypeManager->getStorage('node')->load($node);
+    foreach ($nodes as $key => $node_id) {
+      if ($node_id) {
+        $node = $this->entityTypeManager->getStorage('node')->load($node_id);
         $aliases = !empty($config[$key]['aliases']) ? $config[$key]['aliases'] : [];
 
-        // Iterate through all languages and check if we have a translation.
-        foreach ($aliases as $language => $alias) {
-
         // First delete the existing alias.
-          $source = '/' . ltrim($alias, '/' . $language);
-          $results = $this->entityTypeManager->getStorage('path_alias')->loadByProperties(['alias' => $source]);
+        $path = '/' . $node->toUrl()->getInternalPath();
+        $results = $this->entityTypeManager->getStorage('path_alias')->loadByProperties(['path' => $path]);
         foreach ($results as $result) {
           $result->delete();
         }
 
+        // Iterate through all languages and check if we have a translation.
+        foreach ($aliases as $language => $alias) {
           if ($node->hasTranslation($language)) {
             $node = $node->getTranslation($language);
           }
@@ -307,14 +305,14 @@ final class SettingsForm extends ConfigFormBase {
             continue;
           }
           $paths = $node->get('path')->getValue();
+
           foreach ($paths as &$path) {
             if ($path['langcode'] === $language) {
               // Save the alias and set pathauto to false.
               $alias = preg_replace('/^\/' . $language . '/', '', $alias);
               $path['alias'] = $alias;
               $path['pathauto'] = FALSE;
-              $node->set('path', $paths);
-              $node->save();
+              $this->updateAlias($path, $node);
             }
           }
         }
@@ -336,4 +334,30 @@ final class SettingsForm extends ConfigFormBase {
     return $list;
   }
 
+  private function updateAlias($path, $entity) {
+    $path_alias_storage = $this->entityTypeManager->getStorage('path_alias');
+    $alias_langcode = $path['langcode'];
+
+    // If we have an alias, we need to create or update a path alias entity.
+    if ($path['alias']) {
+      if (empty($path['pid'])) {
+        $path_alias = $path_alias_storage->create([
+          'path' => '/' . $entity->toUrl()->getInternalPath(),
+          'alias' => $path['alias'],
+          'langcode' => $alias_langcode,
+        ]);
+        $path_alias->save();
+        $path['pid'] = $path_alias->id();
+      }
+      elseif ($path['pid']) {
+        $path_alias = $path_alias_storage->load($path['pid']);
+
+        if ($path['alias'] != $path_alias->getAlias()) {
+          $path_alias->setAlias($path['alias']);
+          $path_alias->save();
+        }
+      }
+    }
+  }
+
 }