old_contents: from django import forms
  from django.utils import simplejson as json
  import staticmedia
  
  class JSONWidget(forms.Textarea):
      def render(self, name, value, attrs=None):
          if value is None:
              value = ""
          if not isinstance(value, basestring):
              value = json.dumps(value, indent=2)
          return super(JSONWidget, self).render(name, value, attrs)
  
  
  class JSONSelectWidget(forms.SelectMultiple):
      pass
  
  class JSONTableWidget(JSONWidget):
      class Media:
          js = (
              staticmedia.url('js/jquery.js'),
              staticmedia.url('js/jquery.tmpl.js'),
              staticmedia.url('js/json-table.js'),
              staticmedia.url('js/json-table-templates.js'),
          )
new_contents: from django import forms
  from django.utils import simplejson as json
  from django.conf import settings
  
  class JSONWidget(forms.Textarea):
      def render(self, name, value, attrs=None):
          if value is None:
              value = ""
          if not isinstance(value, basestring):
              value = json.dumps(value, indent=2)
          return super(JSONWidget, self).render(name, value, attrs)
  
  
  class JSONSelectWidget(forms.SelectMultiple):
      pass
  
  class JSONTableWidget(JSONWidget):
      class Media:
          js = (
              settings.STATICFILES_URL + 'js/jquery.js',
              settings.STATICFILES_URL + 'js/jquery.tmpl.js',
              settings.STATICFILES_URL + 'js/json-table.js',
              settings.STATICFILES_URL + 'js/json-table-templates.js',
          )
subject: Use staticfiles instead of staticmedia