Magento\Backend\Model\View\Result\Page->setActiveMenu can't find menu

[myrtopyrli9688]

I'm trying to learn Magento following instructions in a book, and I'm making a backend page for the admin. I have a etc/adminhtml/menu.xml page like this: 

<?xml version="1.0" encoding="UTF-8"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Backend:etc/menu.xsd">
    <menu>
        <add id="Foggyline_Helpdesk::ticket_manage" title="Helpdesk Tickets" module="Foggyline_Helpdesk"
             parent="Magento_Customer::customer" action="foggyline_helpdesk/ticket/index"
             resource="Foggyline_Helpdesk::ticket_manage"/>
    </menu>
</config>

The page appears on the Customer menu all right, but when I click on it I get the error "Uncaught Error: Call to a member function setActive() on bool" and "Magento\Backend\Model\View\Result\Page->setActiveMenu('Foggyline_Helpd...') #1 C:\xampp\htdocs\magento_test\app\code\Foggyline\HelpDesk\Controller\Adminhtml\Ticket\Index.php(16)". From what I gather this happens when you ask for a menu item that doesn't exists.

Foggyline\HelpDesk\Controller\Adminhtml\Ticket\Index.php looks like this:

namespace Foggyline\Helpdesk\Controller\Adminhtml\Ticket;

class Index extends \Foggyline\Helpdesk\Controller\Adminhtml\Ticket
{

    public function execute()
    {
        if ($this->getRequest()->getQuery('ajax')) {
            $resultForward = $this->resultForwardFactory->create();
            $resultForward->forward('grid');
            return $resultForward;
        }
        $resultPage = $this->resultPageFactory->create();

        $resultPage->setActiveMenu('Foggyline_Helpdesk::ticket_manage');
        $resultPage->getConfig()->getTitle()->prepend(__('Tickets'));

        $resultPage->addBreadcrumb(__('Tickets'), __('Tickets'));
        $resultPage->addBreadcrumb(__('Manage Tickets'), __('Manage Tickets'));

        return $resultPage;
    }
}

Do I have to declare the menu item "Foggyline_Helpdesk::ticket_manage" somewhere else besides menu.xml? I can't understand what I'm doing wrong. I've cleaned and flushed the cache a million times, I'm in developer mode, I've deleted the contents of generated and var/cache. If I comment out the line where I set the active menu I get a blank page. Also, in the Foggyline\Helpdesk\Controller\Adminhtml\Ticket.php file, I have a function

protected function _initAction()
    {
        $this->_view->loadLayout();
        $this->_setActiveMenu(
            'Foggyline_Helpdesk::ticket_manage'
        )->_addBreadcrumb(
            __('Helpdesk'),
            __('Tickets')
        );
        return $this;
    }

and there doesn't seem to be an error with the menu item there.

[Nishu Jindal]

Hi @myrtopyrli9688 ,

In your app\code\Foggyline\HelpDesk\Controller\Adminhtml\Ticket\Index.php controller try to replace below line of code 

$resultPage = $this->resultPageFactory->create();

with 

$resultPage = $this->_initAction();

Thanks!

----

Problem solved? Click Accept as Solution!

[Suman Kar]

Please check below code reference 

Source Code reference 

https://github.com/skar2019/AdminInterface

menu.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Backend:etc/menu.xsd">
    <menu>
        <add id="Magento4u_AdminInterface::admininterface_parent" title="Magento4u AdminInterface" translate="title" module="Magento4u_AdminInterface" sortOrder="20"  resource="Magento4u_AdminInterface::admininterface_parent"/>
        <add id="Magento4u_AdminInterface::admininterface_child" title="AdminInterface Display" action="admininterface/index/index" translate="title" module="Magento4u_AdminInterface" sortOrder="10" parent="Magento4u_AdminInterface::admininterface_parent" resource="Magento4u_AdminInterface::admininterface_child" />
    </menu>
</config>

<?php


namespace Magento4u\AdminInterface\Controller\Adminhtml\Index;


use Magento\Backend\App\Action;
use Magento\Backend\App\Action\Context;
use Magento\Framework\App\ResponseInterface;
use Magento\Framework\Controller\ResultInterface;
use Magento\Framework\View\Result\PageFactory;

/**
 * Class Index
 * @package Magento4u\AdminInterface\Controller\Adminhtml\Index
 */
class Index extends Action
{

    /**
     * Authorization level of a basic admin session
     *
     * @see _isAllowed()
     */
    const ADMIN_RESOURCE = 'Magento4u_AdminInterface::admininterface_child';

    /**
     * Index constructor.
     * @param Context $context
     * @param PageFactory $resultPageFactory
     */
    public function __construct(
        Context $context,
        PageFactory $resultPageFactory
    )
    {
        parent::__construct($context);
        $this->resultPageFactory = $resultPageFactory;
    }

    /**
     * Execute action based on request and return result
     * @return ResponseInterface|ResultInterface|void
     */
    public function execute()
    {
        $this->_view->loadLayout();
        $this->_setActiveMenu('Magento4u_AdminInterface::admininterface_child');
        $this->_view->getPage()->getConfig()->getTitle()->set(__('Admin Interface Display'));
        $this->_view->renderLayout();
    }
}

[myrtopyrli9688]

---

@Nishu Jindal wrote:

In your app\code\Foggyline\HelpDesk\Controller\Adminhtml\Ticket\Index.php controller try to replace below line of code 

$resultPage = $this->resultPageFactory->create();

with 

$resultPage = $this->_initAction();

Tried that, and it didn't work either. Now I get the same error on _setActiveMenu('Foggyline_Helpd...')  in the _initAction function. It's as if the 'Foggyline_Helpdesk::ticket_manage' menu item doesn't exist. Yet I've copy-pasted it from menu.xml. Do I need to declare it somewhere else, besides menu.xml?

[myrtopyrli9688]

I've also done what Suman Kar suggested and replaced my execute() function with his. Still the same error.

[myrtopyrli9688 · Accepted solution]

After downloading the book code from git and comparing it line-to-line with my code, I found out what the problem was. It was in the view/adminhtml/layout/foggyline_helpdesk_ticket_index.xml file that showed the page.

I had

<?xml version="1.0" encoding="UTF-8"?>
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column"
xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<update handle="formkey"/>
<update handle="foggyline_helpdesk_ticket_grid_block"/>
<body>
<referenceContainer name="content">
<block class="Foggyline\Helpdesk\Block\Adminhtml\Ticket" 
name="foggyline.helpdesk.ticket.index" 
template="admin.block.helpdesk.ticket.grid.container"/>
</referenceContainer>
</body>
</page>

I had to remove the layout="1column" from the page tag, and replace the block tag with 

<block name="admin.block.helpdesk.ticket.grid.container" class="Foggyline\Helpdesk\Block\Adminhtml\Ticket"> </block>

Now it works.