From d78cbed84de992ac473f2d3cccbc9c0eddf997c2 Mon Sep 17 00:00:00 2001
From: Fabien O'Carroll <fabien@allou.is>
Date: Mon, 28 Oct 2019 16:30:16 +0700
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20Fixed=20error=20from=20has=20hel?=
 =?UTF-8?q?per=20w/o=20dependent=20data?=
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no-issue

Usage of the has helper like `{{#has 'author:count>1'}}` when the
current context does not have the dependent data (in this case
`authors`) would error, because it could not read property length of
undefined.
---
 core/frontend/helpers/has.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/frontend/helpers/has.js b/core/frontend/helpers/has.js
index 683c699557..a577d4d05b 100644
--- a/core/frontend/helpers/has.js
+++ b/core/frontend/helpers/has.js
@@ -11,6 +11,9 @@ var proxy = require('./proxy'),
     validAttrs = ['tag', 'author', 'slug', 'id', 'number', 'index', 'any', 'all'];
 
 function handleCount(ctxAttr, data) {
+    if (!data || !_.isFinite(data.length)) {
+        return false;
+    }
     let count;
 
     if (ctxAttr.match(/count:\d+/)) {