function tag($tag_id = false, $tag_names = false)
{
if ($tag_names) {
require_once 'AMP/Content/Tag/Tag.php';
$new_tag_set = AMP_Content_Tag::create_many($tag_names);
$new_tag_results = true;
foreach ($new_tag_set as $new_tag_id) {
$new_tag_results = $new_tag_results && $this->tag($new_tag_id);
}
if (!$tag_id) {
return $new_tag_results;
}
}
if (!$tag_id) {
return false;
}
$related_tags = AMPSystem_Lookup::instance('tagsByArticle', $this->id);
if (isset($related_tags[$tag_id])) {
return false;
}
require_once 'AMP/Content/Tag/Item/Item.php';
$action_item = new AMP_Content_Tag_Item(AMP_Registry::getDbcon());
$create_values = array('item_type' => 'article', 'item_id' => $this->id, 'user_id' => AMP_SYSTEM_USER_ID, 'tag_id' => $tag_id);
$action_item->setData($create_values);
return $action_item->save();
}
function AMP_add_tags($tag_ids = false, $tag_names = false, $item_id, $item_type)
{
if ($tag_names) {
require_once 'AMP/Content/Tag/Tag.php';
$new_tag_set = AMP_Content_Tag::create_many($tag_names);
$new_tag_results = AMP_add_tags($new_tag_set, false, $item_id, $item_type);
if (!$tag_ids) {
return $new_tag_results;
}
}
if (!$tag_ids) {
return false;
}
if (!is_array($tag_ids)) {
$tag_id_set = array($tag_ids);
} else {
$tag_id_set = $tag_ids;
}
$related_tags = AMPSystem_Lookup::instance('tagsBy' . ucfirst($item_type), $item_id);
if ($related_tags) {
$new_tags = array_diff($tag_id_set, array_keys($related_tags));
} else {
$new_tags = $tag_id_set;
}
if (!$new_tags || empty($new_tags)) {
return false;
}
require_once 'AMP/Content/Tag/Item/Item.php';
$action_item = new AMP_Content_Tag_Item(AMP_Registry::getDbcon());
$create_values = array('item_type' => $item_type, 'item_id' => $item_id, 'user_id' => AMP_SYSTEM_USER_ID);
$results = 0;
foreach ($new_tags as $new_tag_id) {
$create_values['tag_id'] = $new_tag_id;
$action_item->dropID();
$action_item->setData($create_values);
$results += $action_item->save();
}
return $results;
}
