Resolve "Wiki: Vorbelegung "keine" bei "Übergeordnete Seite" funktioniert nicht"

Closes #5277

Merge request studip/studip!4336


(cherry picked from commit 73a016f48fa1882b5513f35ac729f7b22dc957ae)

9d8461fb re #5277 : cast to string so that select inputs show the '' option.
bc06e2d8 remove image

Co-authored-by: Rasmus Fuhse <fuhse@data-quest.de>

2 files changed, 2 insertions, 2 deletions

diff --git a/lib/classes/forms/Form.php b/lib/classes/forms/Form.php
index fbedc1f..9d75fb8 100644
--- a/lib/classes/forms/Form.php
+++ b/lib/classes/forms/Form.php
@@ -134,7 +134,7 @@ class Form extends Part
                     || $object->isAdditionalField($fieldname)
                     || $object->isAliasField($fieldname)
                 ) {
-                    $params['fields'][$fieldname]['value'] = $object[$fieldname];
+                    $params['fields'][$fieldname]['value'] = (string) $object[$fieldname];
                 }
             }
         }
diff --git a/lib/classes/forms/SelectInput.php b/lib/classes/forms/SelectInput.php
index 0ba83c9..36850a9 100644
--- a/lib/classes/forms/SelectInput.php
+++ b/lib/classes/forms/SelectInput.php
@@ -11,7 +11,7 @@ class SelectInput extends Input
         $template = $GLOBALS['template_factory']->open('forms/select_input');
         $template->title = $this->title;
         $template->name = $this->name;
-        $template->value = $this->value;
+        $template->value = (string) $this->value;
         $template->id = md5(uniqid());
         $template->required = $this->required;
         $template->attributes = arrayToHtmlAttributes($this->attributes);