From 7367ef3173b3bbc394036abe561598962818fedb Mon Sep 17 00:00:00 2001
From: inoas <mail@inoas.com>
Date: Fri, 11 Aug 2017 20:36:38 +0200
Subject: [PATCH] Note about allowNullableNulls

---
 src/ORM/Rule/ExistsIn.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ORM/Rule/ExistsIn.php b/src/ORM/Rule/ExistsIn.php
index 738100636ab..5bfa179b1f4 100644
--- a/src/ORM/Rule/ExistsIn.php
+++ b/src/ORM/Rule/ExistsIn.php
@@ -56,6 +56,8 @@ class ExistsIn
      * @param object|string $repository The repository where the field will be looked for,
      * or the association name for the repository.
      * @param array $options The options that modify the rules behavior.
+     *     Options 'allowNullableNulls' will make the rule pass if given foreign keys are set to `null`.
+     *     Notice: allowNullableNulls cannot pass by database columns set to `NOT NULL`.
      */
     public function __construct($fields, $repository, array $options = [])
     {