Fixed #17074 -- Improved first field detection in admin add form

                **options

            )

    def first_field(self):

        try:

            fieldset_name, fieldset_options = self.fieldsets[0]

            field_name = fieldset_options['fields'][0]

            if not isinstance(field_name, six.string_types):

                field_name = field_name[0]

            return self.form[field_name]

        except (KeyError, IndexError):

            pass

        try:

            return next(iter(self.form))

        except StopIteration:

            return None

    def _media(self):

        media = self.form.media

        for fs in self:

{% block submit_buttons_bottom %}{% submit_row %}{% endblock %}

{% if adminform.first_field and add %}

   <script type="text/javascript">document.getElementById("{{ adminform.first_field.id_for_label }}").focus();</script>

{% if adminform and add %}

    <script type="text/javascript">

        (function($) {

            $(document).ready(function() {

                $('form#{{ opts.module_name }}_form :input:visible:enabled:first').focus()

            });

        })(django.jQuery);

    </script>

{% endif %}

{# JavaScript for prepopulated fields #}