Select Command in zend framework - zend-framework

Question

Im am new in Zend Framework.
I have this structure of codes .
DBTable
class Application_Model_DbTable_Employee extends Zend_Db_Table_Abstract
{
protected $_name = 'tab_employee';
}
Model
public function selectAllEmployees(){
$tblEmployee = new Application_Model_DbTable_Employee();
$tblEmployee->select('*');
}
But i can can't get all the data of all the employee .

Answer 1

public function selectAllEmployees(){
$tblEmployee = new Application_Model_DbTable_Employee();
return $tblEmployee->fetchAll($tblEmployee->select());
}

Answer 2

Try this code in model:
public function selectAllEmployees(){
$tblEmployee = new Application_Model_DbTable_Employee();
$rowset = $tblEmployee->fetchAll();
return $rowset;
}
For further information read this http://framework.zend.com/manual/1.12/en/zend.db.table.rowset.html#zend.db.table.rowset.to-array

Answer 3

Model function
public function selectAllEmployees()
{
$selectSql = $this->select();
$selectSql->from($this->_name, array('*'))
->order(id DESC');
return $this->fetchAll($selectSql);
}
in the controller
$employeeModel = new Application_Model_Employee();
$employees = $employeeModel->selectAllEmployees();

Answer 4

Maks3w is correct as well as terse.
Here is a little more detail.
There are a number of ways to use your Application_Model_DbTable_Employee to access and query your tab_employee table of your database.
The easiest way is to query directly from the dbTable model itself:
class Application_Model_DbTable_Employee extends Zend_Db_Table_Abstract
{
protected $_name = 'tab_employee';
public function selectAllEmployees()
{
//$this refers to the current dbTable object
$select = $this->select();
//when querying from the dbTable the from() parameter is assumed to be $this->_name, array('*')
//there several other sql commands available to the select(), where(), orWhere(), join()
$select->order('id DESC');
$result = $this->fetchAll($select);
return $result;
}
}
Controller code:
public function indexAction(){
model = new Application_Model_DbTable_Employee();
$employees = $model->selectAllEmployees();
$this->view->employees = $employees
}
Often a mapper model is used to access the database and provide the data to an entity model. This is also very common a relatively simple to accomplish. The key item to remember when designing the mapper is to include code to access the dbTable model as the database adapter, often called the gateway, here is some example code:
<?php
//This is one way to build a mapper
abstract class My_Model_Mapper_Abstract
{
/**
* Instance of Zend_Db_Table_Abstract
*/
protected $tableGateway = null;
/**
* Will accept a DbTable model passed or will instantiate
* a Zend_Db_Table_Abstract object from table name.
*/
public function __construct(Zend_Db_Table_Abstract $tableGateway = null)
{
if (is_null($tableGateway)) {
$this->tableGateway = new Zend_Db_Table($this->_tableName);
} else {
$this->tableGateway = $tableGateway;
}
}
/**
* Get default database table adapter
*/
protected function getGateway()
{
return $this->tableGateway;
}
/**
* findAll() is a proxy for the fetchAll() method and returns
* an array of entity objects.
*
* #param $where, primary key id
* #param string $order in the format of 'column ASC'
* #return array of entity objects
*/
public function findAll($where = null, $order = null)
{
$select = $this->getGateway()->select();
if (!is_null($where)) {
$select->where('id = ?', $where);
}
if (!is_null($order)) {
$select->order($order);
}
$rowset = $this->getGateway()->fetchAll($select);
$entities = array();
foreach ($rowset as $row) {
$entity = $this->createEntity($row);
$this->setMap($row->id, $entity);
$entities[] = $entity;
}
return $entities;
}
/**
* Abstract method to be implemented by concrete mappers.
*/
abstract protected function createEntity($row);
}
The concrete model might look like:
<?php
class Application_Model_Mapper_Employee extends My_Model_Mapper_Abstract
{
protected $tableName = 'tab_employee';
//I hard code the $tableGateway though this is probably not the best way.
//$tableGateway should probably be injected, but I'm lazy.
public function __construct(Zend_Db_Table_Abstract $tableGateway = null)
{
if (is_null($tableGateway)) {
$tableGateway = new Application_Model_DbTable_User();
} else {
$tableGateway = $tableGateway;
}
parent::__construct($tableGateway);
}
//create the Entity model
protected function createEntity($row)
{
$data = array(
'id' => $row->id,
'name' => $row->name,
'password' => $row->password,
);
$employee = new Application_Model_Employee($data);
return $employee;
}
}
to use this in a controller might look like:
public function indexAction(){
model = new Application_Model_Mapper_Employee();
$employees = $model->findAll();
}
and the most direct way to query your database is least recommended way, directly from the controller:
public function indexAction(){
model = new Application_Model_DbTable_Employee();
$employees = $model->fetchAll();
$this->view->employees = $employees
}
I hope this provides you some help and not to much confusion.