app/views/admin/mass_invites/_form.html.erb
<%= form_for([:admin, @mass_invite], builder: AdminFormBuilder) do |form| %>
<%= form.field :name do %>
<%= form.label_with_error :name %>
<%= form.text_field :name %>
<% end %>
<%= form.field :token do %>
<%= form.label_with_error :token %>
<%= form.text_field :token %>
<% end %>
<ul class="actions submit">
<li><%= form.submit 'Create mass invite' %></li>
<li><%= link_to 'Cancel', admin_mass_invites_path %></li>
</ul>
<% end %>