Ttdfjt

Created a custom module using Ui_Component,facing problem during image upload.

Error (On alert) :

Attention: File was not uploaded

Ui_Component Form Code for Upload:

 <field name="icon">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="dataType" xsi:type="string">string</item>
 <item name="source" xsi:type="string">Item</item>
 <item name="label" xsi:type="string" translate="true">Group Image</item>
 <item name="visible" xsi:type="boolean">true</item>
 <item name="formElement" xsi:type="string">fileUploader</item>
 <item name="elementTmpl" xsi:type="string">ui/form/element/uploader/uploader</item>
 <item name="previewTmpl" xsi:type="string">Testing_Test/image-preview</item>
 <item name="required" xsi:type="boolean">false</item>
 <item name="sortOrder" xsi:type="number">40</item>
 <item name="uploaderConfig" xsi:type="array">
 <item name="url" xsi:type="url" path="testing/item/upload"/>
 </item>
 </item>
 </argument>
 </field> 

image-preview.html (Path: Testing/Test/view/adminhtml/web/template)

<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>

Upload.php (Path: Testing/Test/Controller/Adminhtml/Item)

<?php
namespace TestingTestControllerAdminhtmlItem;

use MagentoFrameworkControllerResultFactory;

class Upload extends MagentoBackendAppAction

public $imageUploader;

public function __construct(
 MagentoBackendAppActionContext $context,
 VendorModuleModelImageUploader $imageUploader
) 
 parent::__construct($context);
 $this->imageUploader = $imageUploader;


public function execute()

 try 
 $result = $this->imageUploader->saveFileToTmpDir('icon');
 $result['cookie'] = [
 'name' => $this->_getSession()->getName(),
 'value' => $this->_getSession()->getSessionId(),
 'lifetime' => $this->_getSession()->getCookieLifetime(),
 'path' => $this->_getSession()->getCookiePath(),
 'domain' => $this->_getSession()->getCookieDomain(),
 ];
 catch (Exception $e) 
 $result = ['error' => $e->getMessage(), 'errorcode' => $e->getCode()];
 
 return $this->resultFactory->create(ResultFactory::TYPE_JSON)->setData($result);

ImageUploader.php (Path: TestingTestModel)

namespace TestingTestModel;

class ImageUploader

 private $coreFileStorageDatabase;
 private $mediaDirectory;
 private $uploaderFactory;
 private $storeManager;
 private $logger;
 public $baseTmpPath;
 public $basePath;
 public $allowedExtensions;

 public function __construct(
 MagentoMediaStorageHelperFileStorageDatabase $coreFileStorageDatabase,
 MagentoFrameworkFilesystem $filesystem,
 MagentoMediaStorageModelFileUploaderFactory $uploaderFactory,
 MagentoStoreModelStoreManagerInterface $storeManager,
 PsrLogLoggerInterface $logger
 ) 
 $this->coreFileStorageDatabase = $coreFileStorageDatabase;
 $this->mediaDirectory = $filesystem->getDirectoryWrite(MagentoFrameworkAppFilesystemDirectoryList::MEDIA);
 $this->uploaderFactory = $uploaderFactory;
 $this->storeManager = $storeManager;
 $this->logger = $logger;
 $this->baseTmpPath = "item/tmp/icon";
 $this->basePath = "item/icon";
 $this->allowedExtensions= ['jpg', 'jpeg', 'gif', 'png'];
 

 public function setBaseTmpPath($baseTmpPath)
 
 $this->baseTmpPath = $baseTmpPath;
 

 public function setBasePath($basePath)
 
 $this->basePath = $basePath;
 

 public function setAllowedExtensions($allowedExtensions)
 
 $this->allowedExtensions = $allowedExtensions;
 

 public function getBaseTmpPath()
 
 return $this->baseTmpPath;
 

 public function getBasePath()
 
 return $this->basePath;
 

 public function getAllowedExtensions()
 
 return $this->allowedExtensions;
 

 public function getFilePath($path, $imageName)
 
 return rtrim($path, '/') . '/' . ltrim($imageName, '/');
 

 public function moveFileFromTmp($imageName)
 
 $baseTmpPath = $this->getBaseTmpPath();
 $basePath = $this->getBasePath();
 $baseImagePath = $this->getFilePath($basePath, $imageName);
 $baseTmpImagePath = $this->getFilePath($baseTmpPath, $imageName);
 try 
 $this->coreFileStorageDatabase->copyFile(
 $baseTmpImagePath,
 $baseImagePath
 );
 $this->mediaDirectory->renameFile(
 $baseTmpImagePath,
 $baseImagePath
 );
 catch (Exception $e) 
 throw new MagentoFrameworkExceptionLocalizedException(
 __('Something went wrong while saving the file(s).')
 );
 
 return $imageName;
 

 public function saveFileToTmpDir($fileId)
 
 $baseTmpPath = $this->getBaseTmpPath();
 $uploader = $this->uploaderFactory->create(['fileId' => $fileId]);
 $uploader->setAllowedExtensions($this->getAllowedExtensions());
 $uploader->setAllowRenameFiles(true);
 $result = $uploader->save($this->mediaDirectory->getAbsolutePath($baseTmpPath));
 if (!$result) 
 throw new MagentoFrameworkExceptionLocalizedException(
 __('File can not be saved to the destination folder.')
 );
 

 $result['tmp_name'] = str_replace('\', '/', $result['tmp_name']);
 $result['path'] = str_replace('\', '/', $result['path']);
 $result['url'] = $this->storeManager
 ->getStore()
 ->getBaseUrl(
 MagentoFrameworkUrlInterface::URL_TYPE_MEDIA
 ) . $this->getFilePath($baseTmpPath, $result['file']);
 $result['name'] = $result['file'];
 if (isset($result['file'])) 
 try 
 $relativePath = rtrim($baseTmpPath, '/') . '/' . ltrim($result['file'], '/');
 $this->coreFileStorageDatabase->saveFile($relativePath);
 catch (Exception $e) 
 $this->logger->critical($e);
 throw new MagentoFrameworkExceptionLocalizedException(
 __('Something went wrong while saving the file(s).')
 );
 
 
 return $result;
 

di.xml

<type name="TestingTestModelImageUploader">
 <arguments>

 <argument name="baseTmpPath" xsi:type="string">item/tmp/icon</argument>
 <argument name="basePath" xsi:type="string">item/icon</argument>
 <argument name="allowedExtensions" xsi:type="array">
 <item name="jpg" xsi:type="string">jpg</item>
 <item name="jpeg" xsi:type="string">jpeg</item>
 <item name="gif" xsi:type="string">gif</item>
 <item name="png" xsi:type="string">png</item>
 </argument>
 </arguments>
 </type>

Done with all this:

php bin/magento setup:upgrade

php bin/magento setup:di:compile php

bin/magento setup:static-content:deploy

Anything missing in this code ?

Looking your last comment, and giving a look to documentation, I am not sure why are you using Factory for that model

https://devdocs.magento.com/guides/v2.3/extension-dev-guide/factories.html

Factories are service classes that instantiate non-injectable classes, that is, models that represent a database entity . They create a layer of abstraction between the ObjectManager and business code.

So, I think you should use just MagentoMediaStorageModelFileUploader in TestingTestModelImageUploader constructor