Validation

<!-- app/views/shared/error_messages.html.erb -->

<% if resource.errors.any? %>
<div class="bg-rose-50 text-rose-700 sm:px-9 sm:py-6 px-6 py-6 rounded-lg mb-6 dark:bg-rose-400/10 dark:border dark:border-rose-400/20 dark:text-rose-50 text-sm" role="alert">
  <div class="flex items-start space-x-4">
    <%= icon "shield-exclamation", classes: "w-6 h-6 text-rose-700 flex-shrink-0", variant: :solid %>
    <div class="flex-1">
      <p class="font-bold"><%= pluralize(resource.errors.count, "error") %> prohibited this post from being saved:</p>
      <ul class="list-disc mt-3 ml-4">
        <% resource.errors.each do |error| %>
          <li><%= error.full_message %></li>
        <% end %>
      </ul>
    </div>
  </div>
</div>
<% end %>

/ app/views/shared/error_messages.haml.erb

.bg-rose-50.text-rose-700.sm:px-9.sm:py-6.px-6.py-6.rounded-lg.mb-6{role: "alert"}
  .flex.items-start.space-x-4
    = icon "shield-exclamation", classes: "w-6 h-6 text-rose-700 flex-shrink-0", variant: :solid
    .flex-1
      %p.font-bold
        = pluralize(resource.errors.count, "error")
      prohibited this post from being saved:
      %ul.list-disc.mt-3.ml-4
        - resource.errors.each do |error|
          %li= error.full_message