Fix ->toUrl() method for invalid uuids #5367

config/components.php

@@ -404,7 +404,7 @@
 				Uuid::is($path, 'file') === true
 			)
 		) {
-			$path = Uuid::for($path)->model()->url();
+			$path = Uuid::for($path)->model()?->url();
 		}
 
 		$url = Url::makeAbsolute($path, $kirby->url());

tests/Cms/Fields/FieldMethodsTest.php

@@ -446,6 +446,53 @@ public function testToUrlEmpty()
 		$this->assertNull($field->toUrl());
 	}
 
+	public function testToUuidUrl()
+	{
+		$app = new App([
+			'roots' => [
+				'index' => $this->tmp
+			],
+			'site' => [
+				'children' => [
+					[
+						'slug' => 'test',
+						'content' => [
+							'title' => 'Test Title',
+							'uuid'  => 'my-page-uuid'
+						],
+						'files' => [
+							[
+								'filename' => 'test.jpg',
+								'content' => [
+									'uuid'  => 'my-file-uuid',
+								]
+							]
+						]
+					]
+				]
+			]
+		]);
+
+		$page = $app->page('page://my-page-uuid');
+		$field = $this->field('page://my-page-uuid');
+		$this->assertSame('/test', $field->toUrl());
+		$this->assertSame($page->url(), $field->toUrl());
+
+		$file = $app->file('file://my-file-uuid');
+		$field = $this->field('file://my-file-uuid');
+		$this->assertSame('/media/pages/test/' . $file->mediaHash() . '/test.jpg', $field->toUrl());
+		$this->assertSame($file->url(), $field->toUrl());
+	}
+
+	public function testToInvalidUuidUrl()
+	{
+		$field = $this->field('page://invalid');
+		$this->assertSame('/', $field->toUrl());
+
+		$field = $this->field('file://invalid');
+		$this->assertSame('/', $field->toUrl());
+	}
+
 	public function testToUser()
 	{
 		$app = new App([

tests/Form/Fields/LinkFieldTest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Form\Fields;
+
+use Kirby\Cms\App;
+use Kirby\Filesystem\Dir;
+use Kirby\Form\Fields\TestCase;
+
+class LinkFieldTest extends TestCase
+{
+	public function testDefaultProps()
+	{
+		$field = $this->field('link');
+
+		$this->assertSame('link', $field->type());
+		$this->assertSame('link', $field->name());
+		$this->assertSame('', $field->value());
+		$this->assertNull($field->label());
+		$this->assertNull($field->text());
+		$this->assertTrue($field->save());
+		$this->assertNull($field->after());
+		$this->assertNull($field->before());
+		$this->assertNull($field->icon());
+		$this->assertNull($field->placeholder());
+		$this->assertSame([
+			'url',
+			'page',
+			'file',
+			'email',
+			'tel',
+			'anchor',
+			'custom'
+		], $field->options());
+	}
+}