From 0fea700c7be051ace98c2b3426531862c73565bb Mon Sep 17 00:00:00 2001
From: Yamagishi Kazutoshi <ykzts@desire.sh>
Date: Mon, 25 Sep 2017 23:58:12 +0900
Subject: [PATCH] Refresh manifest before generate 500.html (#5090)

---
 lib/tasks/assets.rake | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/tasks/assets.rake b/lib/tasks/assets.rake
index cd0a3bd2bbe..ad7c6ba9009 100644
--- a/lib/tasks/assets.rake
+++ b/lib/tasks/assets.rake
@@ -1,8 +1,17 @@
 # frozen_string_literal: true
 
-if Rake::Task.task_defined?('assets:precompile')
-  Rake::Task['assets:precompile'].enhance do
+namespace :assets do
+  desc 'Generate 500.html'
+  task :generate_500 do
     html = ApplicationController.render('errors/500', layout: 'error')
     File.write(Rails.root.join('public', '500.html'), html)
   end
 end
+
+if Rake::Task.task_defined?('assets:precompile')
+  Rake::Task['assets:precompile'].enhance do
+    Webpacker::Manifest.load
+
+    Rake::Task['assets:generate_500'].invoke
+  end
+end