from django import template

def display_excerpt(object, template_suffix='excerpt'):
    excerpt = object._meta.app_label + "/" + object._meta.module_name + "_" + template_suffix + ".html"
    try:
        t = template.loader.select_template([excerpt, 'display_excerpt.html'])
    except template.TemplateDoesNotExist:
        return str(object)
    c = template.Context({"object": object})
    return t.render(c)

register = template.Library()
register.simple_tag(display_excerpt)