Use Default Value checkbox for custom category ui_component

Question

I added a custom category attribute "Listing Image" and want to display the checkbox "Set Default Value", like "Thumbnail" and "Category Image". I already compared the ui_component, but couldn't find the entry for that.

enter image description here

<?xml version="1.0" ?>
<form xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Ui:etc/ui_configuration.xsd">
 <fieldset name="content">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="label" xsi:type="string" translate="true">Content</item>
 <item name="collapsible" xsi:type="boolean">true</item>
 <item name="sortOrder" xsi:type="number">10</item>
 </item>
 </argument>
 <field name="listingimage">
 <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">category</item>
 <item name="label" xsi:type="string" translate="true">Listing 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">Magento_Catalog/image-preview</item>
 <item name="sortOrder" xsi:type="number">45</item>
 <item name="required" xsi:type="boolean">false</item>
 <item name="uploaderConfig" xsi:type="array">
 <item name="url" xsi:type="url" path="categorylandingpage/category/upload/attribute_code/listingimage"/>
 </item>
 <item name="scopeLabel" xsi:type="string">[WEBSITE]</item>
 </item>
 </argument>
 </field>
 </fieldset>
</form>

• Andreas von Studnitz: See the answer magento.stackexchange.com/a/322606/2207.

Answer 1

I already did that as listing grid product, see the image above.

enter image description here

Using:

 \Magento\Framework\View\Asset\Repository $assetRepo,
 $this->assetRepo->getUrl('Magento_Catalog::images/product/placeholder/thumbnail.jpg');

1- file Thumbnail.php

 <?php
 namespace PHPAISS\Jobs\Ui\Component\Listing\Column\Jobs;
 use Magento\Framework\DataObject;
 use Magento\Framework\UrlInterface;
 use Magento\Framework\View\Asset\Repository;
 use Magento\Framework\View\Element\UiComponent\ContextInterface;
 use Magento\Framework\View\Element\UiComponentFactory;
 use Magento\Ui\Component\Listing\Columns\Column;
 use PHPAISS\Jobs\Helper\Data;
class Thumbnail extends Column
{
 /**
 * Column name in job listing grid
 */
const NAME = 'thumbnail';
/**
 * Alt image
 */
const ALT_FIELD = 'title';
/**
 * @var UrlInterface
 */
private $urlBuilder;
/**
 * @var Data
 */
private $helper;
/**
 * @var Repository
 */
private $assetRepo;
/**
 * Thumbnail constructor.
 *
 * @param ContextInterface $context
 * @param UiComponentFactory $uiComponentFactory
 * @param UrlInterface $urlBuilder
 * @param Repository $assetRepo
 * @param Data $helper
 * @param array $components
 * @param array $data
 */
public function __construct(
 ContextInterface $context,
 UiComponentFactory $uiComponentFactory,
 UrlInterface $urlBuilder,
 \Magento\Framework\View\Asset\Repository $assetRepo,
 Data $helper,
 array $components = [],
 array $data = []
) {
 parent::__construct($context, $uiComponentFactory, $components, $data);
 $this->urlBuilder = $urlBuilder;
 $this->helper = $helper;
 $this->assetRepo = $assetRepo;
}
/**
 * Prepare Data Source
 *
 * @param array $dataSource
 * @return array
 */
public function prepareDataSource(array $dataSource)
{
 if (isset($dataSource['data']['items'])) {
 $fieldName = self::NAME;
 foreach ($dataSource['data']['items'] as & $item) {
 /** @var \PHPAISS\Jobs\Model\Job $job */
 $job = new DataObject($item);
 // Set default thumbnail as thumbnail in product listing grid
 $urlImage = $job->getImage() ?
 $this->helper->getUrlJobImage($job->getImage()) :
 $this->assetRepo->getUrl('Magento_Catalog::images/product/placeholder/thumbnail.jpg');
 $item[$fieldName . '_src'] = $urlImage;
 $item[$fieldName . '_alt'] = $this->getAlt($item) ?: '';
 $item[$fieldName . '_link'] = $this->urlBuilder->getUrl(
 'jobs/job/edit',
 ['id' => $job->getEntityId(), 'store' => $this->context->getRequestParam('store')]
 );
 $item[$fieldName . '_orig_src'] = $urlImage;
 }
 }
 return parent::prepareDataSource($dataSource);
}
/**
 * @param array $row
 *
 * @return null|string
 */
protected function getAlt($row)
{
 $altField = $this->getData('config/altField') ?: self::ALT_FIELD;
 return isset($row[$altField]) ? $row[$altField] : null;
}
}

2 - file jobs_job_listing.xml

 <!--
 ** Thumbnail Column
 ** The name 'thumbnail' defined in const NAME = 'thumbnail' in file:
 ** \PHPAISS\Jobs\Ui\Component\Listing\Column\Jobs\Thumbnail
 -->
 <column name="thumbnail" class="PHPAISS\Jobs\Ui\Component\Listing\Column\Jobs\Thumbnail" component="Magento_Ui/js/grid/columns/thumbnail">
 <settings>
 <altField>title</altField>
 <hasPreview>1</hasPreview>
 <label translate="true">Thumbnail</label>
 <sortable>false</sortable>
 </settings>
 </column>

You can check the module in my github: Jobs Module