old_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django import template
  from django.conf import settings
  from django.utils.safestring import mark_safe
  
  register = template.Library()
  
  
  @register.simple_tag(takes_context=True)
  def get_setting(context, key, default_val="", as_key=None):
      """
      get val form settings and set to context
        {% load swift %}
        {% get_setting "key" default_val "as_key" %}
        {{ as_key }}
        if as_key is None, this tag will return val
      """
      if ("%s" % default_val).startswith('$.'):
          default_val = getattr(settings, default_val[2:])
      val = getattr(settings, key, default_val)
      if not as_key:
          return val
      context[as_key] = val
      return ''
  
  
  @register.filter(name='boolean_icon')
  def boolean_icon(v):
      if v:
          return mark_safe('<i class="fa fa-fw fa-check-circle"/>')
      return ''
  
  
  @register.filter(name='display_array')
  def display_array(objs):
      if not objs:
          return ''
      return ', '.join(['%s' % e for e in objs])
  
new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from django import template
  from django.conf import settings
  from django.utils.safestring import mark_safe
  
  register = template.Library()
  
  
  @register.simple_tag(takes_context=True)
  def get_setting(context, key, default_val="", as_key=None):
      """
      get val form settings and set to context
        {% load swift %}
        {% get_setting "key" default_val "as_key" %}
        {{ as_key }}
        if as_key is None, this tag will return val
      """
      if ("%s" % default_val).startswith('$.'):
          default_val = getattr(settings, default_val[2:])
      val = getattr(settings, key, default_val)
      if not as_key:
          return val
      context[as_key] = val
      return ''
  
  
  @register.filter(name='boolean_icon')
  def boolean_icon(v):
      if v:
          return mark_safe('<i class="fa fa-fw fa-check-circle"/>')
      return ''
  
  
  @register.filter(name='display_array')
  def display_array(objs):
      if not objs:
          return ''
      return ', '.join(['%s' % e for e in objs])
  
  
  @register.simple_tag
  def getvars(request, excludes):
      getvars = request.GET.copy()
      excludes = excludes.split(',')
      for p in excludes:
          if p in getvars:
              del getvars[p]
          if len(getvars.keys()) > 0:
              return "&%s" % getvars.urlencode()
          else:
              return ''
  
subject: add tag getvars