text: # -*- coding: utf-8 -*-
  from django import template
  from django.utils.safestring import mark_safe
  
  register = template.Library()
  
  
  @register.filter()
  def bool_icon(value):
      """
      Create a safe HTML version of True/False using Bootstrap styles.
      :param value: a boolean.
      :returns: a string of html for an icon representing the boolean.
      """
      if value:
          classes = 'icon-true text-success'
      else:
          classes = 'icon-false text-danger'
      icon_html = '<i class="icon {}" aria-hidden="true"></i>'.format(classes)
      return mark_safe(icon_html)
  