public static function create_tags_for_post(post_model $post, $tags)
{
if ($tags === '') {
return;
}
$post_tags = [];
$tag_names = array_map('trim', explode(',', $tags));
$old_tags = tag_model::get_in('name', $tag_names);
if ($old_tags === []) {
foreach ($tag_names as $tag_name) {
$tag_id = tag_model::add(array('name' => $tag_name, 'refer_count' => 1));
$post_tags[] = array('post_id' => $post->id, 'tag_id' => $tag_id);
}
setting_model::inc_by_id(array('value' => count($tag_names)), setting_model::id_tag_count);
} else {
tag_model::inc_by_ids(array('refer_count' => 1), array_keys($old_tags));
$old_tag_names = [];
foreach ($old_tags as $old_tag) {
$post_tags[] = array('post_id' => $post->id, 'tag_id' => $old_tag->id);
$old_tag_names[] = $old_tag->name;
}
$new_tag_names = array_diff($tag_names, $old_tag_names);
if ($new_tag_names !== []) {
foreach ($new_tag_names as $new_tag_name) {
$tag_id = tag_model::add(array('name' => $new_tag_name, 'refer_count' => 1));
$post_tags[] = array('post_id' => $post->id, 'tag_id' => $tag_id);
}
setting_model::inc_by_id(array('value' => count($new_tag_names)), setting_model::id_tag_count);
}
}
if ($post_tags !== []) {
post_tag_model::add_many($post_tags);
}
}
