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Posts tagged with: custom module

Magento 2 enable template path hints

Today we discuss how in Magento 2 enable template path hints. This topic will cover how to enable template path hints on frontend and also backend too. There are two ways to enable the template path hints. One way is to enable hints from admin configurations and the other way is by using MySql query.

Using Admin Panel

Login to admin panel.

Front end

Store > Configuration > Advanced > Developer > Debug > Enabled

Template Path Hints for Storefront > Yes

Admin Panel

Store > Configuration > Advanced > Developer > Debug > Enabled  

Template Path Hints for Admin > Yes

Using Mysql Query

Enable Temaote Path Hints

UPDATE core_config_data SET value = '1' WHERE path LIKE '%template_hints%';

Disable Temaote Path Hints

UPDATE core_config_data SET value = '0' WHERE path LIKE '%template_hints%';

Note: this command only work if it have already entry in core_config_data table.

Author: Qaisar Satti
Category: Magento 2
Last Modified: April 23, 2018


Magento 2 display discount percent product page

Today we discuss how in Magento 2 display discount percent product page. This topic will cover how to show % percentage saving on current product. You can use this code on any product product listing or product widget page. You can also use this code product detail page. So let’s start with our example. You need to get $_product->getFinalPrice() and $_product->getPrice() to calculate the percentage of current product.

$_finalPrice = $_product->getFinalPrice();
$_price = $_product->getPrice();
if($_finalPrice < $_price):
   $_savingPercent = 100 - round(($_finalPrice / $_price)*100);
      echo $_savingPercent; ?> % Off
<?php endif; ?>
Author: Qaisar Satti
Category: Magento 2
Last Modified: April 23, 2018


Magento 2 create product programmatically

Today we discussed how in Magento 2 create product programmatically. This tutorial includes the process of creating a simple product, set image to product and set quantity to product. So lets start with creating a simple product. We can do this in two ways- one is creating product with factory method and other is creating product with object manager.

Create Product with Factory Method

  protected $_product;  


  public function __construct(
     
        \Magento\Catalog\Model\ProductFactory $_product

    ) {


        $this->_productloader = $_productloader;
     
    }
    public function createProduct()
    {
       
        $_product = $this->_productloader->create();
        $_product->setName('First Test Product');
        $_product->setTypeId('simple');
        $_product->setAttributeSetId(4);
        $_product->setSku('test-SKU');
        $_product->setWebsiteIds(array(1));
        $_product->setVisibility(4);
        $_product->setPrice(array(1));
        $_product->setImage('/simpeproduct/test.jpg');
        $_product->setSmallImage('/simpeproduct/test.jpg');
        $_product->setThumbnail('/simpeproduct/test.jpg');
        $_product->setStockData(array(
            'use_config_manage_stock' => 0, //'Use config settings' checkbox
            'manage_stock' => 1, //manage stock
            'min_sale_qty' => 1, //Minimum Qty Allowed in Shopping Cart
            'max_sale_qty' => 2, //Maximum Qty Allowed in Shopping Cart
            'is_in_stock' => 1, //Stock Availability
            'qty' => 1000 //qty
            )
        );

        $_product->save();
        echo $_product->getId();
    }

Update Product with factory method

  protected $_product;  


  public function __construct(
     
        \Magento\Catalog\Model\ProductFactory $_product

    ) {


        $this->_productloader = $_productloader;
     
    }
    public function updateProduct()
    {
       
        $_product = $this->_productloader->create()->load(2047);
        $_product->setName('First Test Product Updated');
        $_product->save();
    }

Create Product with Object manager

 <?php
    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    $_product = $objectManager->create('Magento\Catalog\Model\Product');
    $_product->setName('First Test Product');
    $_product->setTypeId('simple');
    $_product->setAttributeSetId(4);
    $_product->setSku('test-SKU');
    $_product->setWebsiteIds(array(1));
    $_product->setVisibility(4);
    $_product->setPrice(array(1));
    $_product->setImage('/simpeproduct/test.jpg');
    $_product->setSmallImage('/simpeproduct/test.jpg');
    $_product->setThumbnail('/simpeproduct/test.jpg');
    $_product->setStockData(array(
            'use_config_manage_stock' => 0, //'Use config settings' checkbox
            'manage_stock' => 1, //manage stock
            'min_sale_qty' => 1, //Minimum Qty Allowed in Shopping Cart
            'max_sale_qty' => 2, //Maximum Qty Allowed in Shopping Cart
            'is_in_stock' => 1, //Stock Availability
            'qty' => 1000 //qty
            )
        );

$_product->save();
echo $_product->getId();

Update Product with Object manager

Now our custom product is created. Now we will update product. So doing with following example just.

            $_product = $objectManager->create('Magento\Catalog\Model\Product')->load(2047);
    $_product->setName('First Test Product Updated');
    $_product->save(); ?>
Author: Qaisar Satti
Category: Magento 2
Last Modified: April 19, 2018


Magento 2 use custom query

Today we will discuss how in Magento 2 custom query works. Sometime magento 2 model is not enough to get data from database as per our requirements. So to fulfill this requirement we use custom query. In this example we will use select custom query, custom delete query, custom insert query and custom update query. So let’s start with example.

Get connection

First of all we will establish a connection to execute the query.

 $this->_resources = \Magento\Framework\App\ObjectManager::getInstance()->get('Magento\Framework\App\ResourceConnection');          
        $connection= $this->_resources->getConnection();

Insert Query

It is simple to use insert query just set the values for columns. Use the inset method.

$array=array(‘column1’=>'column1','column2'=>'column2');

$connection->insert($this->_resources->getTableName(test_table), $array);

Select Query

Selecting table data in custom query you can use following code.

$select = $connection->select()->from(['o' =>  $this->_resources->getTableName(test_table)]);
$result = $connection->fetchAll($select);

       foreach ($result as $data) {
           echo $data['id'];
            }

Update Query

Updating table data in custom query you can use following code.

$id = 1;
 $sql = "Update " . $this->_resources->getTableName('test_table') . " Set `title` ='test title' where `id` = ".$id;
     $connection->query($sql);

Delete Query

To delete table data in custom query you can use following code.

$id = 1;
$condition = $this->getConnection()->quoteInto('id = ?', $id);
            $this->getConnection()->delete($this->getTable('test_table'), $condition);

Join Table

To join table in custom query you can use following code.

        $select = $connection->select()->from(['o' =>  $this->_resources->getTableName('test_table')])->joinleft(
        ['test_table1' => $this->_resources->getTableName('test_table1')],
        'o.id = test_table1.id',
        ['column1','column2']
    );
Author: Qaisar Satti
Category: Magento 2
Last Modified: April 19, 2018


Magento 2 create basic module admin form part 3

As we completed the admin grid part now we move to part Magento 2 create basic module admin form. In this tutorial include admin new ui component form , admin edit ui component form , form data provider,edit form delete button and add different button to form. Now move on creating the ui component form.

Add New Form controller

Now we create controller for adding the new record. This controller just forwarding to edit controller. Create controller for NewAction.php in following directory

QaisarSatti\HelloWorld\Controller\Adminhtml\Index\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Controller\Adminhtml\Index;

class NewAction extends \Magento\Backend\App\Action
{
    /**
     * @var \Magento\Backend\Model\View\Result\Forward
     */

    protected $resultForwardFactory;

    /**
     * @param \Magento\Backend\App\Action\Context $context
     * @param \Magento\Backend\Model\View\Result\ForwardFactory $resultForwardFactory
     */

    public function __construct(
        \Magento\Backend\App\Action\Context $context,
        \Magento\Backend\Model\View\Result\ForwardFactory $resultForwardFactory
    ) {
        $this->resultForwardFactory = $resultForwardFactory;
        parent::__construct($context);
    }

    /**
     * {@inheritdoc}
     */

    protected function _isAllowed()
    {
        return $this->_authorization->isAllowed('QaisarSatti_HelloWorld::helloworld1');
    }

    /**
     * Forward to edit
     *
     * @return \Magento\Backend\Model\View\Result\Forward
     */

    public function execute()
    {
        /** @var \Magento\Backend\Model\View\Result\Forward $resultForward */
        $resultForward = $this->resultForwardFactory->create();
        return $resultForward->forward('edit');
    }
}

Edit Form

Edit form is based on three parts edit controller, edit layout, and edit ui component. So we go through one by one.

Edit Form controller

Now we create controller for adding the new record. This controller just forwarding to edit controller. Create controller for Edit.php in following directory

QaisarSatti\HelloWorld\Controller\Adminhtml\Index\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Controller\Adminhtml\Index;

class Edit extends \Magento\Backend\App\Action
{
    /**
     * @var \Magento\Framework\View\Result\PageFactory
     */

    protected $resultPageFactory;

    /**
     * @param \Magento\Backend\App\Action\Context $context
     * @param \Magento\Framework\Registry $coreRegistry
     * @param \Magento\Framework\View\Result\PageFactory $resultPageFactory
     */

    public function __construct(
        \Magento\Backend\App\Action\Context $context,
        \Magento\Framework\Registry $coreRegistry,
        \Magento\Framework\View\Result\PageFactory $resultPageFactory
    ) {
        $this->resultPageFactory = $resultPageFactory;
        parent::__construct($context, $coreRegistry);
    }

    /**
     * Index action
     *
     * @return \Magento\Framework\Controller\ResultInterface
     */

    public function execute()
    {

        $resultPage = $this->resultPageFactory->create();
        $this->initPage($resultPage)->getConfig()->getTitle()->prepend(__('Manage Post'));
        return $resultPage;
    }
    protected function initPage($resultPage)
    {
         $resultPage->setActiveMenu('QaisarSatti_HelloWorld::helloworld1')
             ->addBreadcrumb(__('Manage Post'), __('Manage Post'))
             ->addBreadcrumb(__('Manage Post'), __('Manage Post'));

         return $resultPage;
    }

    /**
     * Check the permission to run it
     *
     * @return boolean
     */

    protected function _isAllowed()
    {
        return $this->_authorization->isAllowed('QaisarSatti_HelloWorld::helloworld1');
    }
}

Edit Form layout

Now we create layout file for edit. This helloworld_index_edit.xml file combine the ui component with edit controller. Create controller for helloworld_index_edit.xml in following directory

QaisarSatti\HelloWorld\view\adminhtml\layout\

<?xml version="1.0"?>
<!--
   /**
   * Hello World
   *
   * @category    QaisarSatti
   * @package     QaisarSatti_HelloWorld
   * @author      Muhammad Qaisar Satti
   * @Email       [email protected]
   *
*/
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceContainer name="content">
            <uiComponent name="helloworld_edit"/>
        </referenceContainer>
     
    </body>
</page>

Data Provider for Edit Form

Now create the data provider for admin form. Create DataProvider.php in following directory

QaisarSatti\HelloWorld\Model\HelloWorld\

<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

namespace QaisarSatti\HelloWorld\Model\HelloWorld;

use QaisarSatti\HelloWorld\Model\ResourceModel\HelloWorld\CollectionFactory;
use Magento\Framework\App\Request\DataPersistorInterface;

/**
 * Class DataProvider
 */

class DataProvider extends \Magento\Ui\DataProvider\AbstractDataProvider
{
    /**
     * @var \Magento\Cms\Model\ResourceModel\Block\Collection
     */

    protected $collection;

    /**
     * @var DataPersistorInterface
     */

    protected $dataPersistor;

    /**
     * @var array
     */

    protected $loadedData;

    /**
     * Constructor
     *
     * @param string $name
     * @param string $primaryFieldName
     * @param string $requestFieldName
     * @param CollectionFactory $blockCollectionFactory
     * @param DataPersistorInterface $dataPersistor
     * @param array $meta
     * @param array $data
     */

    public function __construct(
        $name,
        $primaryFieldName,
        $requestFieldName,
        CollectionFactory $helloworldCollectionFactory,
        DataPersistorInterface $dataPersistor,
        array $meta = [],
        array $data = []
    ) {
        $this->collection = $helloworldCollectionFactory->create();
        $this->dataPersistor = $dataPersistor;
        parent::__construct($name, $primaryFieldName, $requestFieldName, $meta, $data);
    }

    /**
     * Get data
     *
     * @return array
     */

    public function getData()
    {
        if (isset($this->loadedData)) {
            return $this->loadedData;
        }
        $items = $this->collection->getItems();
        /** @var \Magento\Cms\Model\Block $block */
        foreach ($items as $block) {
            $this->loadedData[$block->getId()] = $block->getData();
        }

        $data = $this->dataPersistor->get('helloworld');
        if (!empty($data)) {
            $block = $this->collection->getNewEmptyItem();
            $block->setData($data);
            $this->loadedData[$block->getId()] = $block->getData();
            $this->dataPersistor->clear('helloworld');
        }

        return $this->loadedData;
    }
}

Edit Form Generic Button

Create GenericButton.php in following directory

QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit;

use Magento\Backend\Block\Widget\Context;
use Magento\Framework\Exception\NoSuchEntityException;

/**
 * Class GenericButton
 */

class GenericButton
{
    /**
     * @var Context
     */

    protected $context;

    /**
     * @var BlockRepositoryInterface
     */


    /**
     * @param Context $context
     */

    public function __construct(
        Context $context
    ) {
        $this->context = $context;
    }

    /**
     * Return Post ID
     *
     * @return int|null
     */

    public function getBlockId()
    {
        try {
            return $this->context->getRequest()->getParam('post_id');

        } catch (NoSuchEntityException $e) {
        }
        return null;
    }

    /**
     * Generate url by route and parameters
     *
     * @param   string $route
     * @param   array $params
     * @return  string
     */

    public function getUrl($route = '', $params = [])
    {
        return $this->context->getUrlBuilder()->getUrl($route, $params);
    }
}

Edit Form Back Button

Create BackButton.php in following directory

QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit;

use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;

/**
 * Class BackButton
 */

class BackButton extends GenericButton implements ButtonProviderInterface
{
    /**
     * @return array
     */

    public function getButtonData()
    {
        return [
            'label' => __('Back'),
            'on_click' => sprintf("location.href = '%s';", $this->getBackUrl()),
            'class' => 'back',
            'sort_order' => 10
        ];
    }

    /**
     * Get URL for back (reset) button
     *
     * @return string
     */

    public function getBackUrl()
    {
        return $this->getUrl('*/*/');
    }
}

Edit Form Delete Button

Create DeleteButton.php in following directory

QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit;

use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;

/**
 * Class DeleteButton
 */

class DeleteButton extends GenericButton implements ButtonProviderInterface
{

    /**
     * @return array
     */

    public function getButtonData()
    {
        $data = [];
        return $data;
        if ($this->getId()) {
            $data = [
                'label' => __('Delete Block'),
                'class' => 'delete',
                'on_click' => 'deleteConfirm(\'' . __(
                    'Are you sure you want to do this?'
                ) . '\', \'' . $this->getDeleteUrl() . '\')',
                'sort_order' => 20,
            ];
        }
        return $data;
    }

    /**
     * @return string
     */

    public function getDeleteUrl()
    {
        return $this->getUrl('*/*/delete', ['id' => $this->getId()]);
    }
}

Edit Form Reset Button

Create ResetButton.php in following directory

QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit;

use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;

/**
 * Class ResetButton
 */

class ResetButton implements ButtonProviderInterface
{
    /**
     * @return array
     */

    public function getButtonData()
    {
        return [
            'label' => __('Reset'),
            'class' => 'reset',
            'on_click' => 'location.reload();',
            'sort_order' => 30
        ];
    }
}

Edit Form SaveAndContinue Button

Create SaveAndContinueButton.php in following directory

QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit;

use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;

/**
 * Class SaveAndContinueButton
 */

class SaveAndContinueButton extends GenericButton implements ButtonProviderInterface
{

    /**
     * @return array
     */

    public function getButtonData()
    {
        return [
            'label' => __('Save and Continue Edit'),
            'class' => 'save',
            'data_attribute' => [
                'mage-init' => [
                    'button' => ['event' => 'saveAndContinueEdit'],
                ],
            ],
            'sort_order' => 80,
        ];
    }
}

Edit Form Save Button

Create SaveButton.php in following directory

QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit;

use Magento\Framework\View\Element\UiComponent\Control\ButtonProviderInterface;

/**
 * Class SaveButton
 * @package Magento\Customer\Block\Adminhtml\Edit
 */

class SaveButton extends GenericButton implements ButtonProviderInterface
{
    /**
     * @return array
     */

    public function getButtonData()
    {
        return [
            'label' => __('Save Post'),
            'class' => 'save primary',
            'data_attribute' => [
                'mage-init' => ['button' => ['event' => 'save']],
                'form-role' => 'save',
            ],
            'sort_order' => 90,
        ];
    }
}

Edit Form UI Component

Now create the ui component for the grid. You can read detail of edit form from tutorial Magento 2 create custom ui component admin form. Now we Create helloworld_edit.xml in following directory

QaisarSatti\HelloWorld\view\adminhtml\ui_component\

<?xml version="1.0" encoding="UTF-8"?>
<!--
/**
* Hello World
   *
   * @category    QaisarSatti
   * @package     QaisarSatti_HelloWorld
   * @author      Muhammad Qaisar Satti
   * @Email       [email protected]
   *
*/
-->
<form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/ui_configuration.xsd">
    <argument name="data" xsi:type="array">
        <item name="js_config" xsi:type="array">
            <item name="provider" xsi:type="string">helloworld_edit.helloworld_data_source</item>
            <item name="deps" xsi:type="string">helloworld_edit.helloworld_data_source</item>
        </item>
        <item name="label" xsi:type="string" translate="true">Manage Post</item>
         <item name="config" xsi:type="array">
            <item name="dataScope" xsi:type="string">data</item>
            <item name="namespace" xsi:type="string">helloworld_edit</item>
        </item>
        <item name="template" xsi:type="string">templates/form/collapsible</item>
         <item name="buttons" xsi:type="array">
            <item name="back" xsi:type="string">QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\BackButton</item>
            <item name="delete" xsi:type="string">QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\DeleteButton</item>
            <item name="reset" xsi:type="string">QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\ResetButton</item>
            <item name="save" xsi:type="string">QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\SaveButton</item>
            <item name="save_and_continue" xsi:type="string">QaisarSatti\HelloWorld\Block\Adminhtml\HelloWorld\Edit\SaveAndContinueButton</item>
        </item>        
    </argument>
    <dataSource name="helloworld_data_source">
        <argument name="dataProvider" xsi:type="configurableObject">
            <argument name="class" xsi:type="string">QaisarSatti\HelloWorld\Model\HelloWorld\DataProvider</argument>
            <argument name="name" xsi:type="string">helloworld_data_source</argument>
            <argument name="primaryFieldName" xsi:type="string">post_id</argument>
            <argument name="requestFieldName" xsi:type="string">id</argument>
            <argument name="data" xsi:type="array">
                <item name="config" xsi:type="array">
                    <item name="submit_url" xsi:type="url" path="helloworld/index/save"/>
                </item>
            </argument>
        </argument>
        <argument name="data" xsi:type="array">
            <item name="js_config" xsi:type="array">
                <item name="component" xsi:type="string">Magento_Ui/js/form/provider</item>
            </item>
        </argument>
    </dataSource>
    <fieldset name="general">
        <argument name="data" xsi:type="array">
            <item name="config" xsi:type="array">
                <item name="label" xsi:type="string"/>
            </item>
        </argument>
        <field name="id">
            <argument name="data" xsi:type="array">
                <item name="config" xsi:type="array">
                    <item name="visible" xsi:type="boolean">false</item>
                    <item name="dataType" xsi:type="string">text</item>
                    <item name="formElement" xsi:type="string">input</item>
                    <item name="source" xsi:type="string">helloworld</item>
                </item>
            </argument>
        </field>
        <field name="title">
            <argument name="data" xsi:type="array">
                <item name="config" xsi:type="array">
                    <item name="label" xsi:type="string">Title:</item>
                    <item name="visible" xsi:type="boolean">true</item>
                    <item name="dataType" xsi:type="string">text</item>
                    <item name="formElement" xsi:type="string">input</item>
                    <item name="source" xsi:type="string">helloworld</item>
                    <item name="validation" xsi:type="array">
                        <item name="required-entry" xsi:type="boolean">true</item>
                    </item>
                </item>
            </argument>
        </field>
        <field name="content">
            <argument name="data" xsi:type="array">
                <item name="config" xsi:type="array">
                    <item name="label" xsi:type="string">Content:</item>
                    <item name="visible" xsi:type="boolean">true</item>
                    <item name="dataType" xsi:type="string">textarea</item>
                    <item name="formElement" xsi:type="string">textarea</item>
                    <item name="source" xsi:type="string">helloworld</item>
                </item>
            </argument>
        </field>        
     </fieldset>
 </form>

Save Form Data

Save controller have two parts. First is check PostDataProcessor, and second is save controller.

Post Data Processor

This is for validation purposes of form. Create PostDataProcessor.php in following directory

QaisarSatti\HelloWorld\Controller\Adminhtml\Index\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Controller\Adminhtml\Index;

class PostDataProcessor
{
    /**
     * @var \Magento\Framework\Stdlib\DateTime\Filter\Date
     */

    protected $dateFilter;

    /**
     * @var \Magento\Framework\View\Model\Layout\Update\ValidatorFactory
     */

    protected $validatorFactory;

    /**
     * @var \Magento\Framework\Message\ManagerInterface
     */

    protected $messageManager;

    /**
     * @param \Magento\Framework\Stdlib\DateTime\Filter\Date $dateFilter
     * @param \Magento\Framework\Message\ManagerInterface $messageManager
     * @param \Magento\Framework\View\Model\Layout\Update\ValidatorFactory $validatorFactory
     */

    public function __construct(
        \Magento\Framework\Stdlib\DateTime\Filter\Date $dateFilter,
        \Magento\Framework\Message\ManagerInterface $messageManager,
        \Magento\Framework\View\Model\Layout\Update\ValidatorFactory $validatorFactory
    ) {
        $this->dateFilter = $dateFilter;
        $this->messageManager = $messageManager;
        $this->validatorFactory = $validatorFactory;
    }

    /**
     * Filtering posted data. Converting localized data if needed
     *
     * @param array $data
     * @return array
     */

    public function filter($data)
    {
        $filterRules = [];

        foreach (['custom_theme_from', 'custom_theme_to'] as $dateField) {
            if (!empty($data[$dateField])) {
                $filterRules[$dateField] = $this->dateFilter;
            }
        }

        return (new \Zend_Filter_Input($filterRules, [], $data))->getUnescaped();
    }

    /**
     * Validate post data
     *
     * @param array $data
     * @return bool     Return FALSE if someone item is invalid
     */

    public function validate($data)
    {
        $errorNo = true;
        if (!empty($data['layout_update_xml']) || !empty($data['custom_layout_update_xml'])) {
            /** @var $validatorCustomLayout \Magento\Framework\View\Model\Layout\Update\Validator */
            $validatorCustomLayout = $this->validatorFactory->create();
            if (!empty($data['layout_update_xml']) && !$validatorCustomLayout->isValid($data['layout_update_xml'])) {
                $errorNo = false;
            }
            if (!empty($data['custom_layout_update_xml'])
                && !$validatorCustomLayout->isValid($data['custom_layout_update_xml'])
            ) {
                $errorNo = false;
            }
            foreach ($validatorCustomLayout->getMessages() as $message) {
                $this->messageManager->addError($message);
            }
        }
        return $errorNo;
    }

    /**
     * Check if required fields is not empty
     *
     * @param array $data
     * @return bool
     */

    public function validateRequireEntry(array $data)
    {
        $requiredFields = [
            'title' => __('Title')
        ];
        $errorNo = true;
        foreach ($data as $field => $value) {
            if (in_array($field, array_keys($requiredFields)) && $value == '') {
                $errorNo = false;
                $this->messageManager->addError(
                    __('To apply changes you should fill in hidden required "%1" field', $requiredFields[$field])
                );
            }
        }
        return $errorNo;
    }
}

Form Save Data Controller

Now we save the data to our table.Create Save.php in following directory

QaisarSatti\HelloWorld\Controller\Adminhtml\Index\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Controller\Adminhtml\Index;

use Magento\Backend\App\Action;
use QaisarSatti\HelloWorld\Model\HelloWorld;
use Magento\Framework\App\Request\DataPersistorInterface;
use Magento\Framework\Exception\LocalizedException;

class Save extends \Magento\Backend\App\Action
{
   
    const ADMIN_RESOURCE = 'QaisarSatti_HelloWorld::helloworld1';    
    protected $dataProcessor;    
    protected $dataPersistor;
    protected $model;

    public function __construct(
        Action\Context $context,
        PostDataProcessor $dataProcessor,
        HelloWorld $model,
        DataPersistorInterface $dataPersistor
    ) {
        $this->dataProcessor = $dataProcessor;
        $this->dataPersistor = $dataPersistor;
        $this->model = $model;
        parent::__construct($context);
    }

    public function execute()
    {
       
        $data = $this->getRequest()->getPostValue();
        $resultRedirect = $this->resultRedirectFactory->create();
        if ($data) {

            $data = $this->dataProcessor->filter($data);
           

            $id = $this->getRequest()->getParam('id');
            if ($id) {
                $this->model->load($id);
            }
           

            $this->model->setData($data);

            $this->_eventManager->dispatch(
                'helloworld_prepare_save',
                ['helloworld' => $this->model, 'request' => $this->getRequest()]
            );

            if (!$this->dataProcessor->validate($data)) {
                return $resultRedirect->setPath('*/*/edit', ['id' => $this->model->getId(), '_current' => true]);
            }

            try {
                $this->model->save();
                $this->messageManager->addSuccess(__('You saved the Post.'));
                $this->dataPersistor->clear('helloworld');
                if ($this->getRequest()->getParam('back')) {
                    return $resultRedirect->setPath(
                        '*/*/edit',
                        ['id' => $this->model->getId(),
                         '_current' => true]
                    );
                }
                return $resultRedirect->setPath('*/*/');
            } catch (LocalizedException $e) {
                $this->messageManager->addError($e->getMessage());
            } catch (\Exception $e) {
                $this->messageManager->addException($e, __('Something went wrong while saving the Post.'));
            }

            $this->dataPersistor->set('helloworld', $data);
            return $resultRedirect->setPath('*/*/edit', ['id' => $this->getRequest()->getParam('id')]);
        }
        return $resultRedirect->setPath('*/*/');
    }
}

Form Delete Button Controller

Create Delete.php in following directory

QaisarSatti\HelloWorld\Controller\Adminhtml\Index\

<?php
/**
 * Hello World
    *
    * @category    QaisarSatti
    * @package     QaisarSatti_HelloWorld
    * @author      Muhammad Qaisar Satti
    * @Email       [email protected]
    *
 */

namespace QaisarSatti\HelloWorld\Controller\Adminhtml\Index;

use Magento\Backend\App\Action;

class Delete extends \Magento\Backend\App\Action
{

    const ADMIN_RESOURCE = 'QaisarSatti_HelloWorld::helloworld1';
       
    protected $model;
    public function __construct(
        Action\Context $context,
        \QaisarSatti\HelloWorld\Model\HelloWorld $model
    ) {
        $this->model = $model;
        parent::__construct($context);
    }
    public function execute()
    {
        // check if we know what should be deleted
        $id = $this->getRequest()->getParam('id');
        /** @var \Magento\Backend\Model\View\Result\Redirect $resultRedirect */
        $resultRedirect = $this->resultRedirectFactory->create();
        if ($id) {
            $title = "";
            try {
                $this->model->load($id);
                $title = $this->model->getTitle();
                $this->model->delete();
                // display success message
                $this->messageManager->addSuccess(__('The post has been deleted.'));
                // go to grid
                $this->_eventManager->dispatch(
                    'adminhtml_helloworld_on_delete',
                    ['title' => $title, 'status' => 'success']
                );
                return $resultRedirect->setPath('*/*/');
            } catch (\Exception $e) {
                $this->_eventManager->dispatch(
                    'adminhtml_helloworld_on_delete',
                    ['title' => $title, 'status' => 'fail']
                );
                // display error message
                $this->messageManager->addError($e->getMessage());
                // go back to edit form
                return $resultRedirect->setPath('*/*/edit', ['id' => $id]);
            }
        }
        // display error message
        $this->messageManager->addError(__('We can\'t find a post to delete.'));
        // go to grid
        return $resultRedirect->setPath('*/*/');
    }
}

Now we complete the custom admin form. Now move to fourth part Magento 2 create basic module frontend part 4.

Author: Qaisar Satti
Category: Magento 2
Last Modified: February 9, 2018


Magento 2 Front controller reached 100 router match iterations

Today we talk about most common error when you trying to add dynamic route in your module. There are three set need to be setModuleName, setControllerName and
setActionName. The problem is cause when there is no matching with your setModuleName, setControllerName and setActionName. May be is causing by spell mistake and any lower uppercase.
But the biggest confusion in this when you set setModuleName. You think of your module name but this is fronName that you are set in your frontend/routes.xml

    app/code/QaisarSatti/HelloWorld/etc/frontend/routes.xml
<?xml version="1.0"?>
<!--/**
* Simple Hello World Module
*
* @category QaisarSatti
* @package QaisarSatti_HelloWorld
* @author Muhammad Qaisar Satti
* @Email [email protected]
*
*/ -->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:App/etc/routes.xsd">
<router id="standard">
<route id="helloworld" frontName="helloworld">
<module name="QaisarSatti_HelloWorld" />
</route>
</router>
</config>

Now your setting will be in your router.php by following module

$request->setModuleName('helloworld')->setControllerName('index')->setActionName('index')
Author: Qaisar Satti
Category: Magento 2
Last Modified: January 29, 2018


Magento 2 get current category information

Today we talk about how to get Magento 2 current category information like category id, category name and other information on category page. Magneto 2 have feature of registry to store data. That is use to store data between execution of data. Like you want to set data in controller and use it in block or model the registry is best option for that. So let start with getting the category data from registry. Now i use HelloWorld module block example for getting current category information.
Create a Block

<?php
namespace QaisarSatti\HelloWorld\Block;
class HelloWorld extends \Magento\Framework\View\Element\Template
{
    protected $registry;

    public function __construct(  
        \Magento\Framework\Registry $registry,

    )
    {      
        $this->registry = $registry;

    }


    public function getCurrentCategory()
    {      
        return $this->registry->registry('current_category');
    }  

}
?>

Get product information In your phtml file

<?php
  $currentCategory = $block->getCurrentCategory();
            echo $currentCategory->geId();
            echo $currentCategory->geName();
 ?>

If you want to get in current category information in phtml you can use following code.

<?php
    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    $currentCategory = $objectManager->get('Magento\Framework\Registry')->registry('current_category');//get current category information
    echo $currentCategory->geId();
    echo $currentCategory->geName();
?>
Author: Qaisar Satti
Category: Magento 2
Last Modified: January 17, 2018


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