How to save custom image coming from third party platform to save into magento 2 custom table.

I have just created REST api for my requirements.

I passed image in base_64 encoded string from Thirdparty platform and i got those image base_64 encoded string in magento 2.

But i dont know how to save image from base_64 encoded string into my custom table. what is the procedure for this event.

Any help will be appericiated.


1 Answer 1


You need to create custom module for this functionality .

Below are the summarized point for custom module and its code .

  • First i have done the same operation to save category image via rest api in magento 2
  • Create one observer which called on catalog_category_save_before event Then ,You need to create String type of extension_attributes for the custom image.
  • After that you can pass base64_encoded image data into that extension_attributes.
  • you need to decode that base64_encoded image and use file_put_contents function to create/save image.
  • Magento EAV structure will automatically save your image file name into database and value for the same if you overrides correctly.

Now Coming on the code , See below file wise code for more clarity.

Events.xml file :

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  <!-- category save before event -->
  <event name="catalog_category_save_before">
      <observer name="catsaveafter" instance="Vendor\ModuleName\Model\Categorysaveimage" />

extension_attributes.xml (Here creating custom extension_attributes for image)

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Api/etc/extension_attributes.xsd">
    <extension_attributes for="Magento\Catalog\Api\Data\CategoryInterface">
        <attribute code="category_baseimage" type="string">            

Observer file.php(Ex - Categorysaveimage.php)

namespace Vendor\ModuleName\Model;

use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\App\Filesystem\DirectoryList;

class Categorysaveimage implements ObserverInterface
    protected $_filesystem;

    public function __construct(
        \Magento\Framework\Filesystem $_filesystem
        $this->_filesystem = $_filesystem;

    public function execute(\Magento\Framework\Event\Observer $observer) 
        $category = $observer->getCategory();       
        $extensionAttributes = $category->getExtensionAttributes();     
        if ($extensionAttributes === null) {     
            $extensionAttributes = $this->getOrderExtensionDependency();     
        $attr = $category->getData('category_baseimage');

        if($attr !== null){         
            $mediapath = $this->_filesystem->getDirectoryRead(DirectoryList::MEDIA)->getAbsolutePath('catalog/category');

            $imgContent = explode(",",$attr);           
            $imgName = $imgContent[0];
            $imgEncodedData = base64_decode($imgContent[1]);
            $path = $mediapath.'/'.$imgName;

            file_put_contents($path, $imgEncodedData);

    private function getOrderExtensionDependency() 
        $orderExtension = \Magento\Framework\App\ObjectManager::getInstance()->get(
        return $orderExtension;  


Note : As i mention i have done this module to save image of category using rest api , same way you can do as per your need .

Hope it helps..

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