Opt out of preview caching

When re-visiting a seats#show page that’s already in the Turbolinks cache (like when un-selecting a seat from the <dialog> element), the <dialog> and map flash in a distracting way.

This commit configures Turbolinks to disable caching for reloading pages from the back-button triggered navigation stacks by setting the cache strategy to no-preview


      app/views/layouts/application.html.erb

diff --git a/app/views/layouts/application.html.erb b/app/views/layouts/application.html.erb
index 833b309..8be7352 100644
--- a/app/views/layouts/application.html.erb
+++ b/app/views/layouts/application.html.erb
@@ -5,6 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <%= csrf_meta_tags %>
     <%= csp_meta_tag %>
+    <meta name="turbolinks-cache-control" content="no-preview">
 
     <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
     <%= javascript_pack_tag 'application', 'data-turbolinks-track': 'reload' %>