controllers/EditTag.php

@@ -75,6 +75,11 @@ class EditTag extends HTMLController
 						'Person' => 'Person',
 					],
 				],
+				'id_user_owner' => [
+					'type' => 'select',
+					'label' => 'Owner',
+					'options' => [0 => '(nobody)'] + Member::getMemberMap(),
+				],
 				'tag' => [
 					'type' => 'text',
 					'label' => 'Tag title',

models/Member.php

@@ -192,4 +192,15 @@ class Member extends User
 		// We should probably phase out the use of this function, or refactor the access levels of member properties...
 		return get_object_vars($this);
 	}
+
+	public static function getMemberMap()
+	{
+		return Registry::get('db')->queryPair('
+			SELECT id_user, CONCAT(first_name, {string:blank}, surname) AS full_name
+			FROM users
+			ORDER BY first_name, surname',
+			[
+				'blank' => ' ',
+			]);
+	}
 }