Cara Membuat Backage Magento 2 mengunggah gambar di frontend

Di Magento 2 ada satu pengunggah gambar terlihat seperti ini:

itu mengunggah gambar menggunakan AJAX dan akan mengembalikan JSON berseri berisi informasi gambar yang diunggah. Apakah ada cara untuk membuat ulang fungsi ini di file phtml frontend?

Anda dapat membuat ekstensi khusus (biarkan nama ekstensi khusus adalah "Vendor_MyModule") untuk mengunggah gambar Front-end.

Saya menganggap Anda sudah membuat ekstensi khusus "Vendor_MyModule". Jadi saya jelaskan di sini hanya file yang diperlukan terkait dengan operasi pengunggahan gambar.

Ikuti langkah-langkah di bawah ini.

langkah 1: Buat file model pengunggah. app / code / Vendor / MyMocule / Model / Upload / ImageFileUploader.php

File: ImageFileUploader.php

<?php
namespace  Vendor\MyModule\Model\Upload;

use Magento\Framework\Exception\LocalizedException;
use Magento\Framework\Filesystem;
use Magento\MediaStorage\Model\File\UploaderFactory;
use Magento\Framework\App\Filesystem\DirectoryList;
use Magento\Framework\UrlInterface;
use Magento\Store\Model\StoreManagerInterface;

/**
 * Class ImageFileUploader
 * @package Aheadworks\Rbslider\Model\Slide
 */
class ImageFileUploader
{
    /**
     * @var UploaderFactory
     */
    private $uploaderFactory;

    /**
     * @var Filesystem
     */
    private $filesystem;

    /**
     * @var StoreManagerInterface
     */
    private $storeManager;

    /**
     * @var string
     */
    const FILE_DIR = 'vendor_mymodule/uplaods';

    /**
     * @param UploaderFactory $uploaderFactory
     * @param Filesystem $filesystem
     * @param StoreManagerInterface $storeManager
     */
    public function __construct(
        UploaderFactory $uploaderFactory,
        Filesystem $filesystem,
        StoreManagerInterface $storeManager
    ) {
        $this->uploaderFactory = $uploaderFactory;
        $this->storeManager = $storeManager;
        $this->filesystem = $filesystem;
    }

    /**
     * Save file to temp media directory
     *
     * @param string $fileId
     * @return array
     * @throws LocalizedException
     */
    public function saveImageToMediaFolder($fileId)
    {
        try {
            $result = ['file' => '', 'size' => ''];
            /** @var \Magento\Framework\Filesystem\Directory\Read $mediaDirectory */
            $mediaDirectory = $this->filesystem
                ->getDirectoryRead(DirectoryList::MEDIA)
                ->getAbsolutePath(self::FILE_DIR);
            /** @var \Magento\MediaStorage\Model\File\Uploader $uploader */
            $uploader = $this->uploaderFactory->create(['fileId' => $fileId]);
            $uploader->setAllowRenameFiles(true);
            $uploader->setFilesDispersion(false);
            $uploader->setAllowedExtensions($this->getAllowedExtensions());
            $result = array_intersect_key($uploader->save($mediaDirectory), $result);

            $result['url'] = $this->getMediaUrl($result['file']);
        } catch (\Exception $e) {
            $result = ['error' => $e->getMessage(), 'errorcode' => $e->getCode()];
        }
        return $result;
    }

    /**
     * Get file url
     *
     * @param string $file
     * @return string
     */
    public function getMediaUrl($file)
    {
        $file = ltrim(str_replace('\\', '/', $file), '/');
        return $this->storeManager
            ->getStore()
            ->getBaseUrl(UrlInterface::URL_TYPE_MEDIA) . self::FILE_DIR . '/' . $file;
    }

    /**
     * Get allowed file extensions
     *
     * @return string[]
     */
    public function getAllowedExtensions()
    {
        return ['jpg', 'jpeg', 'gif', 'png'];
    }
}

Langkah 2: Buat Pengontrol untuk mengunggah gambar menggunakan Model yang dibuat di setp 1

/app/code/Vendor/MyModule/Controller/Index/UploadImage.php

File: UploadImage.php

namespace  Vendor\MyModule\Controller\Index;


use Magento\Framework\App\Action\Action;
use Magento\Framework\App\Action\Context;
use Magento\Framework\Controller\ResultFactory;
use Vendor\MyModule\Model\Upload\ImageFileUploader;

class UploadImage extends \Magento\Framework\App\Action\Action
{


    /**
     * @var ImageFileUploader
     */
    private $imageFileUploader;

    /**
    * @var \Magento\Store\Model\StoreManagerInterface
    */
    protected $storeManager;


    /**
     * @param Context $context
     * @param ImageFileUploader $imageFileUploader
     */
    public function __construct(
        Context $context,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        ImageFileUploader $imageFileUploader

    ) {
        $this->storeManager        = $storeManager;       
        $this->imageFileUploader = $imageFileUploader;
        parent::__construct($context);

    }

    /**
     * Image upload action
     *
     * @return \Magento\Framework\Controller\ResultInterface
     */
    public function execute()
    {        
        $result = $this->imageFileUploader->saveImageToMediaFolder('myimgaeupload');
        return $this->resultFactory->create(ResultFactory::TYPE_JSON)->setData($result);
    }
}

langkah 3: Buat pengontrol lain untuk memuat aplikasi tata letak / kode / Vendor / MuModule / Pengendali / Indeks / Index.php

File: Index.php

namespace Vendor\MyModule\Controller\Index;


class Index extends \Magento\Framework\App\Action\Action
{
    protected $_pageFactory;

    public function __construct(
        \Magento\Framework\App\Action\Context $context,
    \Magento\Framework\View\Result\PageFactory $pageFactory)
        {
        $this->_pageFactory = $pageFactory;
         return parent::__construct($context);
    }

    public function execute()
    {




    $resultPage = $this->_pageFactory->create(); 
   return $resultPage; 
}

}

langkah 4: Deklarasikan router untuk pengontrol font-end Anda. app / code / Vendor / MyModule / etc / frontend / routes.xml

File: routes.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:App/etc/routes.xsd">
    <router id="standard">
        <route id="*myupload*" frontName="*myupload*">
            <module name="Vendor_MyModule" />
        </route>
    </router>
</config>

langkah 5: Nyatakan layout.xml /app/code/Vendor/MyModule//view/frontend/layout/myupload_index_index.xml

File: myupload_index_index.xml

<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <body>
        <referenceContainer name="content">             
             <block class="Vendor\MyModule\Block\Myblock" name="myupload_index_index" template="Vendor_MyModule::form.phtml" />
        </referenceContainer>       
    </body>
</page>

langkah 6: Buat file kelas blok /app/code/Vendor/MyModule/Block/Myblock.php

File: Myblock.php

<?php

namespace Vendor\MyModule\Block;


class Myblock  extends \Magento\Framework\View\Element\Template
{


}

langkah 7: buat file phtml

/app/code/Vendor/MyModule/view/frontend/templates/form.phtml

File: form.phtml

<h2>Welcome to Ny Image Uploader</h2>
<div class="upload-wrapper" data-bind="scope: 'uploader'">
    <!-- ko template: getTemplate() --><!-- /ko -->
</div>


<script type="text/x-magento-init">
{
   ".upload-wrapper": {
       "Magento_Ui/js/core/app": {
           "components": {
               "uploader": {                   
                   "component":"Magento_Ui/js/form/element/file-uploader",                   
                   "template": "ui/form/element/uploader/uploader",                   
                   "previewTmpl":"Vendor_MyModule/checkout-image-preview",
                   "dataScope" : "myimgaeupload",
                   "uploaderConfig": {
                        "url": "<?php echo $block->getUrl('myupload/index/uploadimage'); ?>"
                   }
               }
           }
       }
   }
}

</script> 

langkah 8: membuat file template KO untuk aplikasi pratinjau gambar / kode / Vendor / MyModule / view / frontend / web / template / image-preview.html

File: preview.html

<div class="file-uploader-summary">
    <div class="file-uploader-preview">
        <a attr="href: $parent.getFilePreview($file)" target="_blank">
            <img
                class="preview-image"
                tabindex="0"
                event="load: $parent.onPreviewLoad.bind($parent)"
                attr="
                    src: $parent.getFilePreview($file),
                    alt: $file.name">
        </a>

        <div class="actions">
            <button
                type="button"
                class="action-remove"
                data-role="delete-button"
                attr="title: $t('Delete image')"
                click="$parent.removeFile.bind($parent, $file)">
                <span translate="'Delete image'"/>
            </button>
        </div>
    </div>

    <div class="file-uploader-filename" text="$file.name"/>
    <div class="file-uploader-meta">
        <text args="$file.previewWidth"/>x<text args="$file.previewHeight"/>
    </div>
</div>

langkah 9) Jalankan perintah CLI berikut

sudo php bin/magento setup:di:compile
sudo rm -rf pub/static/frontend/*
sydo php bin/magento cache:flush