🚑 fix modified is not a field

thanks @tobimori

Signed-off-by: bnomei <[email protected]>

Author: bnomei

classes/Feed.php

@@ -4,6 +4,7 @@
 
 namespace Bnomei;
 
+use Kirby\Cms\Field;
 use Kirby\Cms\Pages;
 use Kirby\Exception\DuplicateException;
 use Kirby\Exception\InvalidArgumentException;
@@ -158,7 +159,7 @@ public function optionsFromDefault(?Pages $pages = null, $options = []): array
             $options['modified'] = $modified;
 
             $datefield = $items->first()->{$options['datefield']}();
-            if ($datefield->isNotEmpty()) {
+            if ($datefield instanceof Field && $datefield->isNotEmpty()) {
                 $options['date'] = date($options['dateformat'], $datefield->toTimestamp());
             }
         } else {

composer.json

@@ -1,7 +1,7 @@
 {
   "name": "bnomei/kirby3-feed",
   "type": "kirby-plugin",
-  "version": "1.5.7",
+  "version": "1.5.8",
   "description": "Generate a RSS/JSON/Sitemap-Feed from a Pages-Collection",
   "license": "MIT",
   "authors": [

vendor/composer/installed.php

@@ -1,8 +1,8 @@
 <?php return array(
     'root' => array(
         'name' => 'bnomei/kirby3-feed',
-        'pretty_version' => '1.5.7',
-        'version' => '1.5.7.0',
+        'pretty_version' => '1.5.8',
+        'version' => '1.5.8.0',
         'reference' => NULL,
         'type' => 'kirby-plugin',
         'install_path' => __DIR__ . '/../../',
@@ -11,8 +11,8 @@
     ),
     'versions' => array(
         'bnomei/kirby3-feed' => array(
-            'pretty_version' => '1.5.7',
-            'version' => '1.5.7.0',
+            'pretty_version' => '1.5.8',
+            'version' => '1.5.8.0',
             'reference' => NULL,
             'type' => 'kirby-plugin',
             'install_path' => __DIR__ . '/../../',