Fix #79

Author: tsmr

src/Filter.php

@@ -118,7 +118,7 @@ public function showForm($ID, $options = [])
         echo Html::hidden('plugin_addressing_addressings_id', ['value' => $options['items_id']]);
         echo "<td>" . __('Name') . "</td>";
         echo "<td>";
-        echo Html::input('name', ['value' => $this->fields['name'], 'size' => 40]);
+        echo Html::input('name', ['value' => $this->fields['name'], 'size' => 40, 'required' => true]);
         echo "</td>";
         echo "</tr>";