From bb25b0626a7dcedd8050f1177c80c9fb7646b54a Mon Sep 17 00:00:00 2001
From: Valeri Karpov <val@karpov.io>
Date: Thu, 20 Feb 2020 15:55:59 -0500
Subject: [PATCH] fix(document): allow calling `validate()` in post validate
 hook without causing parallel validation error

Fix #8597
---
 lib/document.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/document.js b/lib/document.js
index 3d03860e550..e193b34a50d 100644
--- a/lib/document.js
+++ b/lib/document.js
@@ -2088,7 +2088,6 @@ Document.prototype.validate = function(pathsToValidate, options, callback) {
     }
 
     this.$__validate(pathsToValidate, options, (error) => {
-      this.$__.validating = null;
       this.$op = null;
       cb(error);
     });
@@ -2274,6 +2273,8 @@ Document.prototype.$__validate = function(pathsToValidate, options, callback) {
     this.$__.cachedRequired = {};
     this.emit('validate', _this);
     this.constructor.emit('validate', _this);
+
+    this.$__.validating = null;
     if (validationError) {
       for (const key in validationError.errors) {
         // Make sure cast errors persist