chg: [UI] Use date helper

app/Controller/AttributesController.php

@@ -1974,8 +1974,6 @@ class AttributesController extends AppController
             $result = $this->Attribute->shortDist[$result];
         } elseif ($field === 'to_ids') {
             $result = ($result == 0 ? 'No' : 'Yes');
-        } elseif ($field === 'timestamp') {
-            $result = date('Y-m-d', $result);
         } elseif ($field === 'value') {
             $this->loadModel('Warninglist');
             $attribute['Attribute'] = $this->Warninglist->checkForWarning($attribute['Attribute']);

app/View/Attributes/ajax/attributeViewFieldForm.ctp

@@ -1,6 +1,8 @@
 <?php
 if ($field === 'value') {
     echo $this->element('Events/View/value_field', ['object' => $object['Attribute']]);
+} elseif ($field === 'timestamp') {
+    echo $this->Time->date($value);
 } else {
     if ($value === 'No') {
         echo '<input type="checkbox" disabled>';

app/View/Elements/Events/View/row_attribute.ctp

@@ -73,7 +73,7 @@ $quickEdit = function($fieldName) use ($editScope, $object, $event) {
     </td>
     <td class="short">
         <div id="Attribute_<?= $objectId ?>_timestamp_solid">
-            <?= date('Y-m-d', $object['timestamp']) ?>
+            <?= $this->Time->date($object['timestamp']) ?>
         </div>
     </td>
     <?php
@@ -102,7 +102,6 @@ $quickEdit = function($fieldName) use ($editScope, $object, $event) {
           endif;
         endif;
       ?>
-      &nbsp;
     </td>
     <td class="short"<?= $quickEdit('category') ?>>
       <div id="Attribute_<?= $objectId ?>_category_solid" class="inline-field-solid">

app/View/Helper/TimeHelper.php

@@ -26,4 +26,17 @@ class TimeHelper extends AppHelper
 
         return '<time>' . h($time) . '</time>';
     }
+
+    /**
+     * @param int $date
+     * @return string
+     */
+    public function date($date)
+    {
+        if (empty($date)) {
+            return '';
+        }
+        $date = date('Y-m-d', $date);
+        return '<time>' . h($date) . '</time>';
+    }
 }