/**
* 删除tag
*
* @param $tag_name
*
* @return
*/
public function delTag($tag_name)
{
//确认Tag存在于该note里，避免不必要的错误删除(例如删除掉其他用户的tag)
if ($this->tagIsExistInThisNote($tag_name)) {
$tag_id = $this->tagNameToId($tag_name);
$this->removeTagLink($tag_id);
$tag_link_db = new Database_NotesLinkTags($this->_db);
//如果该tag还有其他连接，则只删除此条连接，而不删除tag本身
if (!$tag_link_db->tagHasLink($tag_id)) {
$tag_db = new Database_NotesTags($this->_db);
$tag_db->load($tag_id);
$tag_db->delete();
}
}
}
/**
* 为下一个delTag测试，必须还原上一个单元测试中破坏的tag与note之间的link
*
* @return
*/
public function testMakeTagLink()
{
$db = Zend_Registry::get('db');
$new_tag_id = Zend_Registry::get('new_tag_id');
$new_note_id = Zend_Registry::get('new_note_id');
$note = new Database_Notes($db);
$note->load($new_note_id);
//创建新link
$tag_link_id = $note->makeTagLink($new_tag_id);
//确保刚才正确的创建的新link
$tag_link_db = new Database_NotesLinkTags($db);
$load_ready = $tag_link_db->load($tag_link_id);
$this->assertTrue($load_ready);
//检查 tagHasLink 运行正常
$hasLink = $tag_link_db->tagHasLink($new_tag_id);
$this->assertTrue($hasLink);
}
