如果存在一个订阅,我的解决方案会为当前节点找到一个订阅,并组成一个可用于模板的订阅或取消订阅链接:
// find subscription
$subs = notifications_user_get_subscriptions(
$user->uid,
'node',
$topic->nid,
$topic,
FALSE);
// compose link
$destination = "?destination=forum/idea-exchange";
if ($subs) {
foreach ($subs as $key => $sub) {
$link = notifications_get_link('unsubscribe', array(
'sid' => $sub->sid,
'confirm' => FALSE));
$variables['topics'][$id]->subscribe_link =
'<a class="unsubscribe" href="/'.$link['href'].
$destination.'">'.t('Stop tracking this topic').'</a>';
break;
}
}
else {
$link = notifications_get_link(
'subscribe',
array('uid' => $user->uid,
'type' => 'thread',
'fields' => array('nid' => $topic->nid),
'confirm' => FALSE));
$variables['topics'][$id]->subscribe_link =
'<a class="subscribe" href="/'.
$link['href'].$destination.'">'.t('Track this topic').'</a>';
}
我最终为此使用了 CCK 计算字段,以便可以将其包含在视图中。有关更多上下文,请参阅此内容。