Fix/showon

libraries/src/Form/FormField.php

@@ -1019,7 +1019,20 @@ public function renderField($options = [])
             ? ((string) $this->form->getXml()->config->inlinehelp['button'] == 'show' ?: false)
             : false;
 
-        if ($this->showon) {
+        // Check if the field has showon in nested option
+        $hasOptionShowOn = false;
+
+        if (!empty((array) $this->element->xpath('option'))) {
+            foreach ($this->element->xpath('option') as $option) {
+                if ((string) $option['showon']) {
+                    $hasOptionShowOn = true;
+
+                    break;
+                }
+            }
+        }
+
+        if ($this->showon || $hasOptionShowOn) {
             $options['rel']           = ' data-showon=\'' .
                 json_encode(FormHelper::parseShowOnConditions($this->showon, $this->formControl, $this->group)) . '\'';
             $options['showonEnabled'] = true;
@@ -1252,17 +1265,12 @@ public function postProcess($value, $group = null, Registry $input = null)
      */
     protected function getLayoutData()
     {
-        // Label preprocess
-        $label = !empty($this->element['label']) ? (string) $this->element['label'] : null;
-        $label = $label && $this->translateLabel ? Text::_($label) : $label;
-
-        // Description preprocess
+        $label       = !empty($this->element['label']) ? (string) $this->element['label'] : null;
+        $label       = $label && $this->translateLabel ? Text::_($label) : $label;
         $description = !empty($this->description) ? $this->description : null;
         $description = !empty($description) && $this->translateDescription ? Text::_($description) : $description;
-
-        $alt = preg_replace('/[^a-zA-Z0-9_\-]/', '_', $this->fieldname);
-
-        return [
+        $alt         = preg_replace('/[^a-zA-Z0-9_\-]/', '_', $this->fieldname);
+        $options     = [
             'autocomplete'   => $this->autocomplete,
             'autofocus'      => $this->autofocus,
             'class'          => $this->class,
@@ -1292,6 +1300,8 @@ protected function getLayoutData()
             'dataAttributes' => $this->dataAttributes,
             'parentclass'    => $this->parentclass,
         ];
+
+        return $options;
     }
 
     /**