public function Sync($tag_list)
{
// Requere a valid post_id
$myPost = new Post();
$myPost->SetPrimary($this->GetValue('post_id'));
if (!$myPost->GetInfo()) {
return false;
}
// Get a list of all the tags for this post
$tmpPostTag = new PostTag();
$tmpPostTag->SetValue('post_id', $myPost->GetPrimary());
$tmpTag = new Tag();
$tmpPostTag->Join($tmpTag, 'tag_id', 'LEFT');
$tmpPostTag->GetList();
// Create an array worth using
$old_tags = array();
foreach ($tmpPostTag->results as $tag) {
$old_tags[$tag['post_tag_id']] = $tag['tag'];
}
// Split up the categories and make sure there is tags
$new_tags = explode(',', strtolower($tag_list));
foreach ($new_tags as $key => $data) {
$new_tags[$key] = trim($data);
}
// Get the difference
$diff_tags = array_diff($new_tags, $old_tags);
// Add the different tags to the database
foreach ($diff_tags as $tag) {
// Save the Tag
$tmpTag->ResetValues();
$tmpTag->SetValue('tag', $tag);
$item = $tmpTag->GetAssoc('tag', 'tag', 'ASC', 0, 1);
if (count($item) == 1) {
$tmpTag->SetPrimary(key($item));
} else {
$tmpTag->Save();
}
$tmpPostTag->ResetValues();
$tmpPostTag->SetValue('post_id', $myPost->GetPrimary());
$tmpPostTag->SetValue('tag_id', $tmpTag->GetPrimary());
$tmpPostTag->Save();
}
// Get a list of the tags to remove
$rem_tags = array_diff($old_tags, $new_tags);
// Remove the non-needed tags
foreach ($rem_tags as $id => $tag) {
$tmpPostTag->ResetValues();
$tmpPostTag->SetPrimary($id);
$tmpPostTag->Delete();
}
}
