How to Add Image Upload Field in System Configuration in magento2

 Steps to Add Image Upload Field in Magento 2 System Configuration:

Step 1: Initially, you need to create a field in the system.xml file, at the path given below.


app/code/Vendor/Extension/etc/adminhtml/system.xml


Use the following code snippet 


<field id="image" translate="label" type="image" sortOrder="20" showInDefault="1" showInWebsite="1">

      <label>Upload Image</label>

      <backend_model>Vendor\Extension\Model\Config\Backend\Image</backend_model>

      <base_url type="media">extensionname/foldername/</base_url>

</field>

Step 2: Next you need to backend the model file Image.php. For that go to the below path


Vendor\Extension\Model\Config\Backend\Image.php


And add the code as follows


<?php

 

namespace Vendor\Extension\Model\Config\Backend;

 

class Image extends \Magento\Config\Model\Config\Backend\Image

{   

    const UPLOAD_DIR = 'yourfolder';

 

    /**

    * Return path to directory for upload file

    *

    * @return string

    * @throw \Magento\Framework\Exception\LocalizedException

    */

    protected function _getUploadDir()

    {

        return $this->_mediaDirectory->getAbsolutePath($this->_appendScopeInfo(self::UPLOAD_DIR));

    }

 

    protected function _addWhetherScopeInfo()

    {

        return true;

    }

 

    /**

    * Getter for allowed extensions of uploaded files.

    *

    * @return string[]

    */

    protected function _getAllowedExtensions()

    {

        return ['jpg', 'jpeg', 'gif', 'png', 'svg'];

    }

    protected function getTmpFileName()

    {

        $tmpName = null;

        if (isset($_FILES['groups']))

        {

            $tmpName = $_FILES['groups']['tmp_name'][$this->getGroupId()]['fields'][$this->getField()]['value'];

        }

        else

        {

            $tmpName = is_array($this->getValue()) ? $this->getValue()['tmp_name'] : null;

        }

        return $tmpName;

    }

    public function beforeSave()

    {

        $value = $this->getValue();

        $deleteFlag = is_array($value) && !empty($value['delete']);

        if ($this->isTmpFileAvailable($value) && $imageName = $this->getUploadedImageName($value))

        {

            $fileTmpName = $this->getTmpFileName();

            if ($this->getOldValue() && ($fileTmpName || $deleteFlag))

            {

                $this->_mediaDirectory->delete(self::UPLOAD_DIR . '/' . $this->getOldValue());

            }

        }

        return parent::beforeSave();

    }

    private function isTmpFileAvailable($value)

    {

        return is_array($value) && isset($value[0]['tmp_name']);

    }

    

    private function getUploadedImageName($value)

    {

        if (is_array($value) && isset($value[0]['name']))

        {

            return $value[0]['name'];

        }

        return '';

    }   

}

Once you perform the above steps successfully, the image upload field is added to Magento 2 system configuration.


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