app/views/admin/users/edit.html.erb
<div class='page-header'>
<div class='container'>
<h1>Edit User</h1>
</div>
</div>
<div class='container'>
<div class='panel panel-default'>
<%= simple_form_for [:admin, @user] do |f| %>
<div class='panel-heading'>
<h2>User Information</h2>
</div>
<div class='panel-body'>
<%= render partial: 'form', object: f %>
</div>
<div class='panel-footer'>
<%= link_to 'Cancel', admin_user_path(@user), class: 'btn btn-default' %>
<%= f.submit 'Save Changes', class: 'btn btn-primary pull-right' %>
</div>
<%- end %>
</div>
</div>