Creating custom module in magento2 show fatal error

Question 1

I working on creating custom module in magento 2, but it's not working. Could you please suggest me where i went wrong?.

My module code:

app/etc/config.php:

'modules' => 
 array (
 'Ramesh_Sample' => 1,
 ),

app/code/Ramesh/Sample/etc/module.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
 <module name="Ramesh_Sample" schema_version="2.0.0">
 </module>
</config>

app/code/Ramesh/Sample/etc/frontend/routes.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:noNamespaceSchemaLocation="../../../../../../lib/internal/Magento/Framework/App/etc/routes.xsd">
 <router id="standard">
 <route id="sample" frontName="sample">
 <module name="Ramesh_Sample" />
 </route>
 </router>
</config>

app/code/Ramesh/Sample/Controller/Index/Index.php

<?php
namespace Ramesh\Sample\Controller\Index;
use Magento\Framework\App\Action\Context;
//use \Magento\Framework\View\Result\PageFactory;
class Index extends \Magento\Framework\App\Action\Action
{
 private $_resultPageFactory;
 public function __construct(
 Context $context,
 \Magento\Framework\View\Result\PageFactory $resultPageFactory
 )
 {
 parent::__construct($context);
 $this->_resultPageFactory = $resultPageFactory;
 }
 public function execute()
 {
 $result = $this->_resultPageFactory->create();
 return $result;
 }
}

app/code/Ramesh/Sample/Block/Sample.php

namespace Magento\Sample\Block;
class Sample extends \Magento\Framework\View\Element\Template
{
}

app/code/Ramesh/Sample/views/frontend/layout/sample_index_index.xml

<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../../../lib/internal/Magento/Framework/View/Layout/etc/page_configuration.xsd">
 <head>
 <title>Hello World</title>
 </head>
 <body>
 <referenceContainer name="content">
 <block class="Sample\Ramesh\Block\Sample" name="sample" template="sample.phtml">
 </block>
 </referenceContainer>
 </body>
</page>

app/code/Ramesh/Sample/view/frontend/templates/sample.phtml

<?php echo 'Hi I am Magento 2'; ?>

But I got the following error:

a:4:{i:0;s:380:"Recoverable Error: Argument 2 passed to Ramesh\Sample\Controller\Index\Index::__construct() must be an instance of Magento\Framework\View\Result\PageFactory, none given, called in var/generation/Ramesh/Sample/Controller/Index/Index/Interceptor.php on line 14 and defined in app/code/Ramesh/Sample/Controller/Index/Index.php on line 14";i:1;s:6109:"#0 app/code/Ramesh/Sample/Controller/Index/Index.php(14): Magento\Framework\App\ErrorHandler->handler(4096, 'Argument 2 pass...', '/var/www/html/m...', 14, Array)

Question 2

See below link How to create Custom Module in Magento 2? magento.stackexchange.com/questions/54609/…

Question 3

try to delete your module from the var/generation/vendor-name/your-module and try to refresh the page and check if it's working.

Question 4

Why do I have to delete the complete var/generation folder? Is there a faster process? Do I have to run bin/magento setup:di:compile every time?

Question 5

You don't need to delete the complete var/generation folder try to identify your correct folder of your module Example : Demo /Module inside the var/generation .The code bin/magento setup:di:compile works only if you set the dependencies or code generation patterns set in di.xml

Question 6

This has happened to me while working with controllers and I fixed it the same way, but can somebody explain why this happens in the first place?

Question 7

tried the same above code and deleted files as mentioned but still showing error - HTTP ERROR 500,

Question 8

You can use below mentioned command and then refresh the page.

php bin/magento setup:upgrade

Question 9

It worked for me

Question 10

Great ;) Working for me

Question 11

Replace code given below in your constructor

$this->_pageFactory = $pageFactory;
return parent::__construct($context);

Niranjan B 1,23211 silver badges13 bronze badges · Answer 1 · 2015-08-26 01:27:34Z

29

try to delete your module from the var/generation/vendor-name/your-module and try to refresh the page and check if it's working.

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edited Mar 4, 2016 at 5:32

krupal patel's user avatar

krupal patel

2151 gold badge2 silver badges7 bronze badges

answered Aug 26, 2015 at 1:27

Niranjan B's user avatar

Niranjan B

1,23211 silver badges13 bronze badges

4

Why do I have to delete the complete var/generation folder? Is there a faster process? Do I have to run bin/magento setup:di:compile every time?

tester
– tester

2016年02月17日 20:49:48 +00:00
Commented Feb 17, 2016 at 20:49
1

You don't need to delete the complete var/generation folder try to identify your correct folder of your module Example : Demo /Module inside the var/generation .The code bin/magento setup:di:compile works only if you set the dependencies or code generation patterns set in di.xml

Niranjan B
– Niranjan B

2016年02月18日 04:45:20 +00:00
Commented Feb 18, 2016 at 4:45
This has happened to me while working with controllers and I fixed it the same way, but can somebody explain why this happens in the first place?

diazwatson
– diazwatson

2017年03月05日 23:52:41 +00:00
Commented Mar 5, 2017 at 23:52
tried the same above code and deleted files as mentioned but still showing error - HTTP ERROR 500,

Amit Dwivedi
– Amit Dwivedi

2019年07月27日 06:34:39 +00:00
Commented Jul 27, 2019 at 6:34

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Hardik Shah 9466 silver badges10 bronze badges · Answer 2 · 2016-06-22 14:13:26Z

10

You can use below mentioned command and then refresh the page.

php bin/magento setup:upgrade

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edited Dec 30, 2016 at 19:34

Mukesh's user avatar

Mukesh

1,4844 gold badges29 silver badges59 bronze badges

answered Jun 22, 2016 at 14:13

Hardik Shah's user avatar

Hardik Shah

9466 silver badges10 bronze badges

2

It worked for me

WaPoNe
– WaPoNe

2016年12月19日 08:50:30 +00:00
Commented Dec 19, 2016 at 8:50
Great ;) Working for me

AbdulBasit
– AbdulBasit

2017年10月18日 07:40:18 +00:00
Commented Oct 18, 2017 at 7:40

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NIRAJ SHARMA 1721 silver badge5 bronze badges · Answer 3 · 2017-03-18 20:21:46Z

1

Replace code given below in your constructor

$this->_pageFactory = $pageFactory;
return parent::__construct($context);

Share

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edited Mar 18, 2017 at 21:17

Fabian Schmengler's user avatar

Fabian Schmengler

66.2k25 gold badges191 silver badges422 bronze badges

answered Mar 18, 2017 at 20:21

NIRAJ SHARMA's user avatar

NIRAJ SHARMA

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