function add_otag($otag)
{
global $USER;
$error = '';
// When adding ofical tag, we see if there's already a personal tag
// With the same Name, if there is, we just change the type
if ($tag = tag_by_name($otag)) {
if ($tag->tagtype == 'official') {
// official tag already exist
$error = get_string('tagalready');
break;
} else {
// might not want to do this anymore?
$tag->tagtype = 'official';
update_record('tag', $tag);
$tagid = $tag->id;
}
} else {
// Brand new offical tag
$tagid = tag_create($otag, 'official');
if (empty($tagid)) {
error('Can not create tag!');
}
}
return $error;
}
/**
* function to attach tags into a post
* @param int postid - id of the blog
*/
function add_tags_info($postid)
{
global $USER;
$post = get_record('post', 'id', $postid);
/// Attach official tags
if ($otags = optional_param('otags', '', PARAM_INT)) {
foreach ($otags as $otag) {
$tag->tagid = $otag;
//insert_record('blog_tag_instance', $tag);
tag_an_item('blog', $postid, $otag, 'official');
}
}
/// Attach Personal Tags
if ($ptags = optional_param('ptags', '', PARAM_NOTAGS)) {
$ptags = explode(',', $ptags);
foreach ($ptags as $ptag) {
$ptag = trim($ptag);
// check for existance
// it does not matter whether it is an offical tag or personal tag
// we do not want to have 1 copy of offical tag and 1 copy of personal tag (for the same tag)
if ($ctag = tag_by_name($ptag)) {
tag_an_item('blog', $postid, $ctag->id);
} else {
// create a personal tag
if ($tagid = tag_create($ptag)) {
if ($tagid = array_shift($tagid)) {
tag_an_item('blog', $postid, $tagid);
}
}
}
}
}
}
