Magento 2 decode widget code in category description

Question

I have added widget(call static block) in category description http://prntscr.com/ko816y.
But it is not call widget in front just showing output as it look in admin WYSIWYG editor.
So,I want to convert below code to html

{{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="10"}}

How can I convert widget code to html?

EDIT
I have Call Description like this way

<?= /* @escapeNotVerified */ $this->helper('Magento\Catalog\Helper\Output')->categoryAttribute($block->getCurrentCategory(), $_description, 'description') ?>

Answer 1

you need to pass the content of the description inside a function before the display. This filterProvider will replace the widget code inside the content of the description.

public function __construct(
    \Magento\Cms\Model\Template\FilterProvider $filterProvider
)
{
    $this->_filterProvider = $filterProvider;
}

public function addWidget($description) {
     $newDescription = $this->_filterProvider->getPageFilter()->filter(
           $description
     );
     return $newDescription;
}       

Answer 2

I don't know why it doesn't work for you, basically {{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="10"}} should work in cms page, category descriptions etc...

I have some workaround, it is not very best way but try it:

1. Create phtml in : app/design/frontend/{Vendor}/{theme}/Magento_Theme/templates/html/category-description.phtml

   <?php echo $this->getLayout()->createBlock('Magento\Cms\Block\Block')->setBlockId("static-block-indentifier")->toHtml(); ?>
   

2. In your category description area >Wysiwyg editor > show/hide editor > add this:

   {{block class="Magento\Framework\View\Element\Template" template="Magento_Theme::html/category-description.phtml"}}
   

Now you should get your static-block content in your category description.