zf3 __construct() not working - zend-framework

Question

I've created a module with name Commerce in zend 3 which is working fine. Now when I inject a dependency through __construct() it throws error
Too few arguments to function
Commerce\Controller\IndexController::__construct(), 0 passed in
/var/www/html/zf3/vendor/zendframework/zend-servicemanager/src/Factory/InvokableFactory.php
on line 30 and exactly 1 expected
Here is the controller code.
<?php
namespace Commerce\Controller;
use Zend\Mvc\Controller\AbstractActionController;
use Zend\View\Model\ViewModel;
use Commerce\Model\Commerce;
class IndexController extends AbstractActionController
{
private $commerce;
/**
* IndexController constructor.
* #param Commerce $commerce
*/
public function __construct(Commerce $commerce)
{
$this->commerceModel = $commerce;
}
public function indexAction()
{
return new ViewModel();
}
}
module.config.php code
<?php
namespace Commerce;
use Zend\Router\Http\Literal;
use Zend\Router\Http\Segment;
use Zend\ServiceManager\Factory\InvokableFactory;
return [
'router' => [
'routes' => [
'home' => [
'type' => Literal::class,
'options' => [
'route' => '/',
'defaults' => [
'controller' => Controller\IndexController::class,
'action' => 'index',
],
],
],
'commerce' => [
'type' => Segment::class,
'options' => [
'route' => '/commerce[/:action][/:id]',
'defaults' => [
'controller' => Controller\IndexController::class,
'action' => 'index',
],
],
],
],
],
'controllers' => [
'factories' => [
Controller\IndexController::class => InvokableFactory::class
],
],
'view_manager' => [
'display_not_found_reason' => true,
'display_exceptions' => true,
'doctype' => 'HTML5',
'not_found_template' => 'error/404',
'exception_template' => 'error/index',
'template_map' => [
'layout/layout' => __DIR__ . '/../view/layout/layout.phtml',
'commerce/index/index' => __DIR__ . '/../view/commerce/index/index.phtml',
'error/404' => __DIR__ . '/../view/error/404.phtml',
'error/index' => __DIR__ . '/../view/error/index.phtml',
],
'template_path_stack' => [
__DIR__ . '/../view',
],
],
];
Where is the issue? zend-di is already installed.

Answer 1

Your error is caused in line
Controller\IndexController::class => InvokableFactory::class
this does not provide a "Commerce\Model\Commerce" to the constructor of your IndexController. You need to change this to provide the dependency:
'controllers' => [
'factories' => [
Controller\IndexController::class => function($container) {
return new Controller\IndexController(
$container->get(\Commerce\Model\Commerce::class)
);
},
],
],
'service_manager' => [
'factories' => [
\Commerce\Model\Commerce::class => function($sm) {
/* provide any dependencies if needed */
/* Create the model here. */
return new \Commerce\Model\Commerce($dependencies);
},
]
],
The best approach is to provide its own factory for your Commerce\Model\Commerce class, as seen above in the setting 'factories' of 'service_manager'.
EDIT: as request, if you want to do everything inside the controller Factory, here is a simple example:
'controllers' => [
'factories' => [
Controller\IndexController::class => function($container) {
$dbAdapter = $container->get('Zend\Db\Adapter\Adapter');
$resultSetPrototype = new ResultSet();
$tableGateway = new TableGateway('commerceTableName', $dbAdapter, null, $resultSetPrototype);
return new Controller\IndexController(
new \Commerce\Model\Commerce($tableGateway)
);
},
],
],