cara menyimpan atribut gambar kustom di magento 2

Saya perlu menampilkan beberapa gambar produk di frontend berdasarkan kondisi: penggunaan untuk mirror virtual harus diperiksa.

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

namespace Dcw\Vm\Observer;

use Magento\Framework\Event\ObserverInterface;

class ChangeTemplateObserver extends \Magento\ProductVideo\Observer\ChangeTemplateObserver
{
    /**
     * @param mixed $observer
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     * @return void
     */
    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        $observer->getBlock()->setTemplate('Dcw_Vm::helper/gallery.phtml');
    }
}

Templat:

<div class="admin__field field-image-vm">
    <div class="admin__field-control">
        <div class="admin__field admin__field-option">
            <input type="checkbox"
                   id="use-for-vm"
                   data-role="vm-save"
                   data-form-part="<?php /* @escapeNotVerified */ echo $formName ?>"
                   value="1"
                   class="admin__control-checkbox"
                   name="<?php /* @escapeNotVerified */ echo $elementName ?>[<%- data.file_id %>][vm]"
            <% if (data.useforvm == 1) { %>checked="checked"<% } %> />

            <label for="use-for-vm" class="admin__field-label">
                <?php /* @escapeNotVerified */ echo __('Use for Virutal Mirror')?>
            </label>
        </div>
    </div>
</div>

Pasang skrip:

<?php

namespace Dcw\Vm\Setup;

use Magento\Framework\Setup\InstallSchemaInterface;
use Magento\Framework\Setup\SchemaSetupInterface;
use Magento\Framework\Setup\ModuleContextInterface;
use Magento\Catalog\Model\ResourceModel\Product\Gallery;

class InstallSchema implements InstallSchemaInterface {

    public function install(SchemaSetupInterface $setup, ModuleContextInterface $context) {
        $setup->startSetup();

        $setup->getConnection()->addColumn(
                $setup->getTable(Gallery::GALLERY_TABLE), 'vm', [
            'type' => \Magento\Framework\DB\Ddl\Table::TYPE_SMALLINT,
            'unsigned' => true,
            'nullable' => false,
            'default' => 0,
            'comment' => 'use for Vm'                ]
        );

        $setup->endSetup();
    }

}

Bagaimana cara menyimpan status gambar yang dicentang di backend? Dan bagaimana cara memfilter gambar-gambar itu di frontend? Bisakah Anda membantu saya dalam hal ini?

MEMPERBARUI:

mengikuti pengamat (pada acara catalog_product_save_after) untuk gambar yang ada berfungsi, tetapi untuk gambar baru tidak berfungsi.

<?php

namespace Dcw\Vm\Observer;

use Magento\Framework\Event\ObserverInterface;

class Productsaveafter implements ObserverInterface {

    protected $request;
    protected $resource;

    /**
     * 
     * @param \Magento\Framework\App\RequestInterface $request
     * @param \Magento\Framework\App\ResourceConnection $resource\
     */
    public function __construct(
    \Magento\Framework\App\RequestInterface $request, \Magento\Framework\App\ResourceConnection $resource
    ) {
        $this->request = $request;
        $this->resource = $resource;
    }

    public function execute(\Magento\Framework\Event\Observer $observer) {

        $vm = array();
        $data = $this->request->getPostValue();

        if (isset($data['product']['media_gallery']['images'])) {
            $images = $data['product']['media_gallery']['images'];

            foreach ($images as $image) {
                if (isset($image['vm']) && $image['vm'] == 1) {
                    $vm[$image['value_id']] = 1;
                } else {
                    $vm[$image['value_id']] = 0;
                }
            }
   // print_r($images);exit;
            $connection = $this->resource->getConnection();
            $tableName = 'catalog_product_entity_media_gallery'; //gives table name with prefix
            $product = $observer->getProduct();
            $mediaGallery = $product->getMediaGallery();

            if (isset($mediaGallery['images'])) {
                foreach ($mediaGallery['images'] as $image) {
                    if (isset($vm[$image['value_id']])) {
                        //Update Data into table
                        $sql = "Update " . $tableName . " Set vm = " . $vm[$image['value_id']] . " where value_id = " . $image['value_id'];
                        $connection->query($sql);
                    }
                }
            }
        }
    }

}

Di pengamat Anda ada banyak kode yang tidak perlu. Anda dapat mengubahnya seperti:

<?php

namespace Dcw\Vm\Observer;

use Magento\Framework\Event\ObserverInterface;

class ProductSaveAfter implements ObserverInterface {

    protected $request;
    protected $resource;

    /**
     *
     * @param \Magento\Framework\App\RequestInterface $request
     * @param \Magento\Framework\App\ResourceConnection $resource\
     */
    public function __construct(
        \Magento\Framework\App\RequestInterface $request, \Magento\Framework\App\ResourceConnection $resource
    ) {
        $this->request = $request;
        $this->resource = $resource;
    }

    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        $data = $this->request->getPostValue();

        if (isset($data['product']['media_gallery']['images'])) {
            // print_r($images);exit;
            $connection = $this->resource->getConnection();
            $tableName = 'catalog_product_entity_media_gallery'; //gives table name with prefix
            $product = $observer->getProduct();
            $mediaGallery = $product->getMediaGallery();

            if (isset($mediaGallery['images'])) {
                foreach ($mediaGallery['images'] as $image) {
                        //Update Data into table
                    $vmValue = !empty($image['vm']) ? (int)$image['vm'] : 0;
                        $sql = "UPDATE " . $tableName . " SET vm = " . $vmValue . " WHERE value_id = " . $image['value_id'];
                        $connection->query($sql);
                }
            }
        }
    }

}

Karena Anda tidak perlu menyimpan data dari permintaan, karena tidak ada value_iddalam gambar yang baru dibuat, oleh karena itu data Anda tidak tetap saat menambahkan gambar baru.

Untuk mendapatkan data di tempat lain saya menulis sebuah plugin. Itu menambahkan kolom vmke galeri media pilih:

app / code / Dcw / Vm / etc / di.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Catalog\Model\ResourceModel\Product\Gallery">
        <plugin name="afterCreateBatchBaseSelect" type="Dcw\Vm\Plugin\Product\Gallery" sortOrder="10" disabled="false"/>
    </type>
</config>

Kode:

<?php

namespace Dcw\Vm\Plugin\Product;

class Gallery
{
    public function afterCreateBatchBaseSelect(
        \Magento\Catalog\Model\ResourceModel\Product\Gallery $subject,
        \Magento\Framework\DB\Select $select
    ) {
        $select->columns('vm');

        return $select;
    }
}

Jadi sekarang atribut khusus Anda vmharus selalu ada di data media produk.

Untuk menyembunyikan vm-gambar di frontend Anda dapat menulis plugin:

app / code / Dcw / Vm / etc / frontend / di.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Catalog\Model\Product">
        <plugin name="afterGetMediaGalleryImages" type="Dcw\Vm\Plugin\Product" sortOrder="10" disabled="false"/>
    </type>
</config>

Kode:

<?php

namespace Dcw\Vm\Plugin;

class Product
{
    /**
     * @param \Magento\Catalog\Model\Product $subject
     * @param \Magento\Framework\Data\Collection $result
     * @return mixed
     */
    public function afterGetMediaGalleryImages(\Magento\Catalog\Model\Product $subject, $result)
    {
        foreach ($result as $key => $image) {
            if ($image['vm']) {
                $result->removeItemByKey($key);
            }
        }

        return $result;
    }
}

Untuk mendapatkan vm-gambar dari produk, gunakan kode writen oleh @Marius (tanpa plugin yang menghapus gambar ini):

$images = []; 
foreach ($product->getMediaGalleryImages() as $image) {
    if ($image->getVm()) {
        $images[] = $image;
    }
}

Mengambil di frontend:

Katakanlah produk yang ingin Anda tampilkan cermin virtualnya $product.
Anda bisa mendapatkan gambar yang ditandai dengan atribut khusus Anda seperti ini:

$images = []; 
foreach ($product->getMediaGalleryImages() as $image) {
    if ($image->getVm()) {
        $images[] = $image;
    }
}

Kemudian Anda dapat mengulang melalui $imagesarray dan menampilkannya di tempat yang Anda butuhkan.

Untuk menyimpan nilai kotak centang itu di backend saya pikir Anda perlu menulis sebuah afterplugin untuk metode di \Magento\Catalog\Model\Product\Attribute\Backend\Media\ImageEntryConverter::convertFrommana Anda melampirkan nilai yang Anda dapatkan dari pos di $entryArray.