zend retriving tag list - sql

Question

I have some problem with zend. Here it is. I'm going to make some kind of articles db, which containt some info. Every article is marked with 1 or more tags (like WordPress).
I have a controller (let it be index) and action (also index).
All I need is to get articles and tags, associated with it, when user goes to site/index/index.
I have 3 tables:
articles(idarticles, title..)
tags(idtags, title)
tagList(idarticles, idtags).
How can I read tags, associated with article?

Answer 1

Zend's MVC doesn't actually include a model, however, the quickstart guide outlines creating a model.
The simplest way (not necessarily the best way), is to setup the connection in your application.ini, or setup the adapter like this (see the Zend_Db_Adapter docs):
$db = new Zend_Db_Adapter_Pdo_Mysql(array(
'host' => '127.0.0.1',
'username' => 'webuser',
'password' => 'xxxxxxxx',
'dbname' => 'test'
));
Then use SQL to select your data.
//all articles
$articles = $db->query('SELECT * FROM articles');
//a article's tags
$tags = $db->query('SELECT * FROM tagList JOIN tags ON
(tagList.idtag = tags.idtags) WHERE idarticles = ?', $idarticles);
This is also taged for Zend_Db_Table, to use that to access the data, first setup a default adapter (or again, use application.ini):
Zend_Db_Table::setDefaultAdapter($dbAdapter);
Then get objects for you tables like this:
$ariclesTable = new Zend_Db_Table('articles');
To get all the articles:
$articles = $articlesTable->fetchAll();
To get an article's tags (little more complex here, using a Zend_Db_Table_Select as recommended):
$select = $tagsTable->select();
//3rd argument must be empty array, so no joined columns are selected
$select->join('tagList', 'tagList.idtag = tags.idtags', array());
$select->where('tagList.idarticles = ?', $idarticles);
$tags = tagsTable->fetchAll($select);