[6.x] Use absolute URL in link index column for entries on another site

src/Fieldtypes/Link.php

@@ -3,9 +3,11 @@
 namespace Statamic\Fieldtypes;
 
 use Facades\Statamic\Routing\ResolveRedirect;
+use Statamic\Contracts\Data\Localization;
 use Statamic\Contracts\Entries\Collection;
 use Statamic\Contracts\Entries\Entry;
 use Statamic\Facades\GraphQL;
+use Statamic\Facades\Site;
 use Statamic\Fields\Field;
 use Statamic\Fields\Fieldtype;
 use Statamic\Fieldtypes\Link\ArrayableLink;
@@ -103,7 +105,7 @@ public function preProcessIndex($data)
             return null;
         }
 
-        if (! ($url = is_object($item) ? $item->url() : $item)) {
+        if (! ($url = $this->indexUrl($item))) {
             return null;
         }
 
@@ -165,6 +167,26 @@ public function preload()
         ];
     }
 
+    private function indexUrl($item)
+    {
+        if (! is_object($item)) {
+            return $item;
+        }
+
+        if ($item instanceof Localization && $item->locale() !== $this->indexSite()) {
+            return $item->absoluteUrl();
+        }
+
+        return $item->url();
+    }
+
+    private function indexSite(): string
+    {
+        $parent = $this->field->parent();
+
+        return $parent instanceof Localization ? $parent->locale() : Site::selected()->handle();
+    }
+
     private function linkTypeFor($value): ?string
     {
         if (! $value) {

tests/Fieldtypes/LinkTest.php

@@ -6,6 +6,7 @@
 use Mockery;
 use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\Attributes\Test;
+use Statamic\Contracts\Data\Localization;
 use Statamic\Entries\Entry;
 use Statamic\Facades;
 use Statamic\Fields\ArrayableString;
@@ -156,6 +157,45 @@ public function it_pre_processes_entry_reference_for_index()
         );
     }
 
+    #[Test]
+    public function it_pre_processes_entry_on_another_site_with_absolute_url_for_index()
+    {
+        $entry = Mockery::mock(\Statamic\Contracts\Entries\Entry::class, Localization::class);
+        $entry->shouldReceive('locale')->andReturn('fr');
+        $entry->shouldReceive('absoluteUrl')->once()->andReturn('http://example.fr/the-entry-url');
+        $entry->shouldNotReceive('url');
+
+        Facades\Entry::shouldReceive('find')->with('entry-id')->once()->andReturn($entry);
+
+        $fieldtype = (new Link)->setField(new Field('test', ['type' => 'link']));
+
+        $this->assertEquals(
+            ['type' => 'entry', 'url' => 'http://example.fr/the-entry-url', 'icon' => 'collections'],
+            $fieldtype->preProcessIndex('entry::entry-id')
+        );
+    }
+
+    #[Test]
+    public function it_pre_processes_entry_on_the_parents_site_with_relative_url_for_index()
+    {
+        $entry = Mockery::mock(\Statamic\Contracts\Entries\Entry::class, Localization::class);
+        $entry->shouldReceive('locale')->andReturn('fr');
+        $entry->shouldReceive('url')->once()->andReturn('/the-entry-url');
+        $entry->shouldNotReceive('absoluteUrl');
+
+        $parent = Mockery::mock(\Statamic\Contracts\Entries\Entry::class, Localization::class);
+        $parent->shouldReceive('locale')->andReturn('fr');
+
+        Facades\Entry::shouldReceive('find')->with('entry-id')->once()->andReturn($entry);
+
+        $fieldtype = (new Link)->setField((new Field('test', ['type' => 'link']))->setParent($parent));
+
+        $this->assertEquals(
+            ['type' => 'entry', 'url' => '/the-entry-url', 'icon' => 'collections'],
+            $fieldtype->preProcessIndex('entry::entry-id')
+        );
+    }
+
     #[Test]
     public function it_pre_processes_asset_reference_for_index()
     {