Magento 2 "Recoverable Error: Argument 2 passed" when trying to define model in constructor

Question

I am trying to define 2 models inside controller constructor to use it later inside execute function. This is my code:

namespace Company\Modul\Controller\Adminhtml\Index; use Magento\Backend\App\Action; class Save extends \Magento\Backend\App\Action { protected $dataProcessor; protected $appEmulation; protected $filterProvider; public function __construct( \Magento\Store\Model\App\Emulation $appEmulation, \Magento\Cms\Model\Template\FilterProvider $filterProvider, Action\Context $context, PostDataProcessor $dataProcessor) { $this->dataProcessor = $dataProcessor; $this->filterProvider = $filterProvider; $this->appEmulation = $appEmulation; parent::__construct($context); } public function execute() { $data = $this->getRequest()->getPostValue(); $this->appEmulation->startEnvironmentEmulation(1); //some more code... $this->_redirect('*/*/'); } }

I am getting this error:

Recoverable Error: Argument 2 passed to Company\Module\Controller\Adminhtml\Index\Save::__construct() must be an instance of Magento\Cms\Model\Template\FilterProvider, instance of Magento\Backend\App\Action\Context given, called in C:\wamp\www\magento2b\var\generation\Company\Module\Controller\Adminhtml\Index\Save\Interceptor.php on line 14 and defined in C:\wamp\www\magento2b\app\code\Company\Module\Controller\Adminhtml\Index\Save.php on line 16

What am I doing wrong, what would be a proper way to access filterProvider?

Kanhaiya lal · Accepted Answer · 2018-04-03 16:22:44Z

Replace __construct method following code:

  public function __construct( Action\Context $context, \Magento\Store\Model\App\Emulation $appEmulation, \Magento\Cms\Model\Template\FilterProvider $filterProvider, PostDataProcessor $dataProcessor ) { $this->dataProcessor = $dataProcessor; $this->filterProvider = $filterProvider; $this->appEmulation = $appEmulation; parent::__construct($context); }

Note:

For Magento 2.0.x and 2.1.x

You need to remove var/generation/* folder content

For Magento 2.2.x ( generation folder is moved out from var folder and rename as generated in Magento 2.2.x )

You need to remove generated/* folder content except .htaccess file.

Thank you, I didn't know that context must be passed as first argument, I thought the order isn't important. Now I know tnx to you. — JohnyFree
– JohnyFree, Commented Jul 4, 2016 at 19:10
@JohnyFree the order is always based on the parameter of the original constructor, extra parameters go in the end — Raphael at Digital Pianism
– Raphael at Digital Pianism, Commented Jul 4, 2016 at 20:11

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