From 56a4e585107367cf1da0477dd18cd0f2d729b8f8 Mon Sep 17 00:00:00 2001
From: evazion <noizave@gmail.com>
Date: Wed, 5 Aug 2020 12:27:32 -0500
Subject: [PATCH] uploads: fix js error when resizing window.

Fix exception when resizing the window when the preview image isn't
present.
---
 app/javascript/src/javascripts/uploads.js.erb | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/app/javascript/src/javascripts/uploads.js.erb b/app/javascript/src/javascripts/uploads.js.erb
index 800090537..a5ce47c5b 100644
--- a/app/javascript/src/javascripts/uploads.js.erb
+++ b/app/javascript/src/javascripts/uploads.js.erb
@@ -143,10 +143,13 @@ Upload.toggle_size = function(e) {
 
 Upload.update_scale = function() {
   let $image = $("#image");
-  let natural_width = $image.get(0).naturalWidth;
-  let natural_height = $image.get(0).naturalHeight;
-  let scale_percentage = Math.round(100 * $image.width() / natural_width);
-  $("#upload-image-metadata-resolution").html(`(${natural_width}x${natural_height}, resized to ${scale_percentage}%)`);
+
+  if ($image.length) {
+    let natural_width = $image.get(0).naturalWidth;
+    let natural_height = $image.get(0).naturalHeight;
+    let scale_percentage = Math.round(100 * $image.width() / natural_width);
+    $("#upload-image-metadata-resolution").html(`(${natural_width}x${natural_height}, resized to ${scale_percentage}%)`);
+  }
 }
 
 Upload.fetch_data_manual = function(e) {