app/views/comments/_form.html.erb
<%= form_with(model: [@story, @comment], local: true) do |form| %>
<% if @comment.errors.any? %>
<div class="alert alert-danger" role="alert">
<div id="error_explanation">
<h4>
<%= t('comments.form.prohibited') %>:
</h4>
<ul>
<% @comment.errors.each do |error| %>
<li><%= error.full_message %></li>
<% end %>
</ul>
</div>
</div>
<% end %>
<div class="w-100">
<div data-mdb-input-init class="form-outline">
<%= form.label :body, class: 'form-label', for: 'textAreaExample' %>
<%= form.text_area :body, class: 'form-control', id: 'textAreaExample', rows: '4' %>
</div>
<div class="d-flex justify-content-between mt-3">
<%= form.submit class: 'btn btn-primary' %>
</div>
</div>
<% end %>