'Manually make an inline-ish block
JSONField doesn\'t do well with fieldsets for whatever reason. This is
just to link to the exchanges.'

def exchanges(self, obj):

    url = urlresolvers.reverse('admin:{0}_{1}_changelist'.format(HttpExchange._meta.app_label, HttpExchange._meta.model_name))
    return mark_safe('<a    href="{0}?{1}={2}">{3}    HTTP    transactions</a>'.format(url, 'integrations', obj.pk, obj.exchanges.count()))
