call model in zend form using dependencies + zend framework 2 - zend-form

Question

I am trying to fetch my category model in zend form for working out with select element with zend framework 2.
after lot of code searching I found I can either inject or pull dependencies.
Following code I did in my module.php
I want categoryTable.php(model) file in my CategoryForm.php
public function getServiceConfig()
{
return array(
'factories' => array(
'Category\Model\CategoryTable' => function($sm) {
$tableGateway = $sm->get('CategoryTableGateway');
$table = new CategoryTable($tableGateway);
//echo "<pre>";print_r($table);echo "</pre>";
return $table;
},
'CategoryTableGateway' => function ($sm) {
$dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
$resultSetPrototype = new ResultSet();
$resultSetPrototype->setArrayObjectPrototype(new Category());
return new TableGateway('Of_Restaurants_Category', $dbAdapter, null, $resultSetPrototype);
},
'Category\Form\CategoryForm' => function ($sm) {
$service = $sm->get('Category\Model\CategoryTable');
$form = new Form;
$form->setService($service);
return $form;
}
),
);
}
then I put following code in my controller.
$form = $this->getServiceLocator()->get("Category\Form\CategoryForm");
Then I Put following code in my CategoryForm.php
public function getCategoryTable()
{
if (!$this->categoryTable) {
$sm = $this->getServiceLocator();
$this->categoryTable = $sm->get('Category\Model\CategoryTable');
}
return $this->categoryTable;
}
And then I call it in same file like this way
public function __construct($name = null)
{
parent::__construct('category');
echo "<pre>";print_r($this->getCategoryTable());die;
.... other code
I found this error
Fatal error: Call to undefined method Category\Form\CategoryForm::getServiceLocator() in D:\wamp\www\zendapp\module\Category\src\Category\Form\CategoryForm.php on line 120
please help. and am I missing something?

Answer 1

I found the solution
Step :1
Here is my module.php code
public function getServiceConfig()
{
return array(
'invokables' => array(
'Category\Form\CategoryForm' => 'Category\Form\CategoryForm',
),
'factories' => array(
'Category\Model\CategoryTable' => function($sm) {
$tableGateway = $sm->get('CategoryTableGateway');
$table = new CategoryTable($tableGateway);
//echo "<pre>";print_r($table);echo "</pre>";
return $table;
},
'CategoryTableGateway' => function ($sm) {
$dbAdapter = $sm->get('Zend\Db\Adapter\Adapter');
$resultSetPrototype = new ResultSet();
$resultSetPrototype->setArrayObjectPrototype(new Category());
return new TableGateway('Of_Restaurants_Category', $dbAdapter, null, $resultSetPrototype);
},
),
);
}
Step :2
Then in controller I made this change
// $form = new CategoryForm();
// Service locator now injected
$form = $this->getServiceLocator()->get('Category\Form\CategoryForm');
Step :3
Then In my categoryForm.php I made below changes
use Zend\ServiceManager\ServiceManager;
use Zend\ServiceManager\ServiceManagerAwareInterface;
protected $serviceManager;
public function getCategoryTable()
{
if (!$this->categoryTable) {
$sm = $this->getServiceManager();
$this->categoryTable = $sm->get('Category\Model\CategoryTable');
}
return $this->categoryTable;
}
protected function getCatList()
{
$groups = $this->getCategoryTable()->fetchAll();
return $groups;
}
public function getServiceManager()
{
if ( is_null($this->serviceManager) ) {
throw new Exception('The ServiceManager has not been set.');
}
return $this->serviceManager;
}
public function setServiceManager(ServiceManager $serviceManager)
{
$this->serviceManager = $serviceManager;
// Call the init function of the form once the service manager is set
$this->init();
return $this;
}
public function __construct($name = null) // constructor I finished immediately
{
parent::__construct('category');
}
I add INIT() function to fetch servicemanager
public function init()
{
$this->setAttribute('method', 'post');
$options = array();
foreach ($this->getCatList() as $cat) {
$options[$cat->id] = $cat->title;
}
$this->add(array(
'type' => 'Zend\Form\Element\Select',
'name' => 'parent_id',
'options' => array(
'label' => 'Parent Category',
'empty_option' => 'Please choose Parent Category',
'value_options' => $options,
),
));
}
Hope this will help who are new ZF2.