Quick hack to implement drag and drop for ordered model django admin

dnd_ordered_admin.py

class DragndropOrderedModelAdmin(OrderedModelAdmin):
    def move_above_view(self, request, object_id, other_object_id):
        obj = get_object_or_404(self.model, pk=unquote(object_id))
        other_obj = get_object_or_404(self.model, pk=unquote(other_object_id))
        obj.above(other_obj)
        # go back 3 levels (to get from /pk/move-above/other-pk back to the changelist)
        return HttpResponseRedirect('../../../')

    def get_urls(self):
        def wrap(view):
            def wrapper(*args, **kwargs):
                return self.admin_site.admin_view(view)(*args, **kwargs)
            return update_wrapper(wrapper, view)
        return [
            url(
                r'^(.+)/move-above/(\d+)/$',
                wrap(self.move_above_view),
                name='{app}_{model}_order_above'.format(**self._get_model_info())
            ),
       ] + super().get_urls()

    def make_draggable(self, obj):
        model_info = self._get_model_info()
        url = reverse(
            "{admin_name}:{app}_{model}_order_above".format(admin_name=self.admin_site.name, **model_info),
            args=[-1, 0]  # placeholder pks, will be replaced in js
        )
        return '''
        <div class="pk-holder" data-pk="%s"></div> <!-- render the pk into each row -->
        <style>[draggable=true] { -khtml-user-drag: element; }</style>  <!-- fix for dragging in safari -->
        <script>
            window.__draggedObjPk = null;
        
            django.jQuery(function () {
                const $ = django.jQuery;
                if (!window.__listSortableSemaphore) {  // make sure this part only runs once
                    window.__move_to_url = '%s'; // this is the url including the placeholder pks
                    $('#result_list > tbody > tr').each(function(idx, tr) {
                        const $tr = $(tr);
                        $tr.attr('draggable', 'true');
                        const pk = $tr.find('.pk-holder').attr('data-pk');
                        $tr.attr('data-pk', pk);
                        $tr.on('dragstart', function (event) {
                            event.originalEvent.dataTransfer.setData('text/plain', null);  // make draggable work in firefox
                            window.__draggedObjPk = $(this).attr('data-pk');
                        });
                        $tr.on('dragover', false); // make it droppable
                        $tr.on('drop', function (event) {
                            event.preventDefault();  // prevent firefox from opening the dataTransfer data
                            const otherPk = $(this).attr('data-pk');
                            console.log(window.__draggedObjPk, 'dropped on', otherPk);
                            const url = window.__move_to_url
                                .replace('\/0\/', '/' + otherPk + '/')
                                .replace('\/-1\/', '/' + window.__draggedObjPk + '/');
                            console.log('redirecting', url);
                            window.location = url;                            
                        });
                    });
                    window.__listSortableSemaphore = true;
                }
            });
        </script>
        ''' % (obj.pk, url)
    make_draggable.allow_tags = True
    make_draggable.short_description = ''

ok no worries. thx for posting this back then!