rosehill/classes/UserList.php

113 lines
3.4 KiB
PHP

<?php
/**
* A collection class for User objects
*
* This class creates a zend_db select statement.
* ZendDbResultIterator handles iterating and paginating those results.
* As the results are iterated over, ZendDbResultIterator will pass each desired
* row back to this class's loadResult() which will be responsible for hydrating
* each User object
*
* Beyond the basic $fields handled, you will need to write your own handling
* of whatever extra $fields you need
*
* @copyright 2009 City of Bloomington, Indiana
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.txt
* @author Cliff Ingham <inghamn@bloomington.in.gov>
*/
class UserList extends ZendDbResultIterator
{
private $columns = array('id','person_id','username','password','authenticationMethod');
/**
* @param array $fields
*/
public function __construct($fields=null)
{
parent::__construct();
if (is_array($fields)) {
$this->find($fields);
}
}
/**
* Populates the collection
*
* @param array $fields
* @param string|array $order Multi-column sort should be given as an array
* @param int $limit
* @param string|array $groupBy Multi-column group by should be given as an array
*/
public function find($fields=null,$order='username',$limit=null,$groupBy=null)
{
$this->select->from(array('u'=>'users'));
// Finding on fields from the Users table is handled here
if (count($fields)) {
foreach ($fields as $key=>$value) {
if (array_key_exists($key,$this->columns)) {
$this->select->where("u.$key=?",$value);
}
}
}
// Finding on fields from other tables requires joining those tables.
// You can handle fields from other tables by adding the joins here
// If you add more joins you probably want to make sure that the
// above foreach only handles fields from the users table.
$joins = array();
// Firstname, lastname, and email come from the People table
if (isset($fields['firstname'])) {
$joins['p'] = array('table'=>'people','condition'=>'u.id=p.user_id');
$this->select->where('p.firstname=?',$fields['firstname']);
}
if (isset($fields['lastname'])) {
$joins['p'] = array('table'=>'people','condition'=>'u.id=p.user_id');
$this->select->where('p.lastname=?',$fields['lastname']);
}
if (isset($fields['email'])) {
$joins['p'] = array('table'=>'people','condition'=>'u.id=p.user_id');
$this->select->where('p.email=?',$fields['email']);
}
// To get the Role, we have to join the user_roles and roles tables
if (isset($fields['role'])) {
$joins['ur'] = array('table'=>'user_roles','condition'=>'u.id=ur.user_id');
$joins['r'] = array('table'=>'roles','condition'=>'ur.role_id=r.id');
$this->select->where('r.name=?',$fields['role']);
}
// Add all the joins we've created to the select
foreach ($joins as $key=>$join) {
$this->select->joinLeft(array($key=>$join['table']),$join['condition']);
}
$this->select->order($order);
if ($limit) {
$this->select->limit($limit);
}
if ($groupBy) {
$this->select->group($groupBy);
}
$this->populateList();
}
/**
* Hydrates all the objects from a database result set
*
* This is a callback function, called from ZendDbResultIterator. It is
* called once per row of the result.
*
* @param int $key The index of the result row to load
* @return User
*/
protected function loadResult($key)
{
return new User($this->result[$key]);
}
}