app/views/devise/registrations/more_actions.html.erb
<%= form_for(current_user, as: :user, url: registration_path(:user), html: { method: :put }) do |f| %>
<% if current_user.errors.any? %>
<div class="card red lighten-3">
<div class="card-content">
<div class="card-title">Please fix the following errors:</div>
<ul class="browser-default">
<%= devise_error_messages! %>
</ul>
</div>
</div>
<% end %>
<div class="row">
<div id="preferences" class="col s12">
<%= render partial: 'devise/registrations/panes/more', locals: { f: f } %>
</div>
</div>
<div class="center">
<div class="actions">
<%= f.submit "Save changes", class: 'btn blue' %>
<%= link_to "Cancel", :back, class: 'btn grey' %>
</div>
</div>
<% end %>