app/views/fine_print/signatures/_form.html.erb
<%= form_for([@contract, @signature], html: { class: 'fine_print' }) do |f| %>
<% if @signature.errors.any? %>
<div id='error_explanation' class='fine_print errors'>
<h4 class='fine_print heading'>
<%= t 'fine_print.error', count: @signature.errors.count %>
</h4>
<ul>
<% @signature.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class='field'>
<%= f.label :accept,
t('fine_print.signature.actions.accept'),
class: 'fine_print' %>
<%= check_box_tag :signature_accept, class: 'fine_print check_box' %>
</div>
<br>
<div class='actions'>
<%= f.submit t('fine_print.signature.actions.sign'),
class: 'fine_print submit',
data: { disable_with: 'Please wait...' } %>
</div>
<% end %>