= effective_form_with(model: [:admin, stamp], engine: true) do |f| - if f.object.new_record? = f.select :owner, { 'Users' => current_user.class.members.sorted }, polymorphic: true - else = f.static_field :owner = render 'effective/stamps/fields', f: f, stamp: f.object - if f.object.new_record? = f.submit 'Save and Mark Paid' - else = f.submit 'Save'