[Fixed]-How to create new horizontal row for each field in django form?

You’re returning record_list but assigning it to mapindex_list. Either iterate through mapindex_list in the template or change the name in the render function to match:

return render(request, self.template_name, {
            'title': 'Map Index Update Form',
            'record_list': record_list,
            'form_mapindex': form_mapindex
        })