app/views/admin/roles/new.html.erb
<div class="page-header"><h1>New role</h1></div>
<%= form_for(@role, url: admin_roles_path) do |f| %>
<%= render_error_messages(@role) %>
<p>
<label for='role_form'>Role Name:</label> <%= f.text_field :name %>
</p>
<p>
<%= f.submit "Create" %>
</p>
<% end %>
<%= link_to 'Back', admin_roles_path %>