pinrails/app/views/machines/_form.html.erb

<%= form_with model: @machine do |form| %>
  <br>
  <div>
    <%= form.label :name %><br>
    <%= form.text_field :name %>
    <% @machine.errors.full_messages_for(:name).each do |message| %>
      <div><%= message %></div>
    <% end %>
  </div>
  <br>

  <div>
    <%= form.label :edition %><br>
    <%= form.text_field :edition %>
    <% @machine.errors.full_messages_for(:edition).each do |message| %>
      <div><%= message %></div>
    <% end %>
  </div>
  <br>

  <div>
    <%= form.submit %>
  </div>
  <br>
<% end %>