Magento 2 add category attribute

Step #1: Create the Attribute

The following is a full example of an install script that creates a category attribute. If you already have a category attribute, it is not necessary.

namespace Namespace\Module\Setup;

use Magento\Framework\Setup\{
    ModuleContextInterface,
    ModuleDataSetupInterface,
    InstallDataInterface
};

use Magento\Eav\Setup\EavSetup;
use Magento\Eav\Setup\EavSetupFactory;

class InstallData implements InstallDataInterface
{
    private $eavSetupFactory;

    public function __construct(EavSetupFactory $eavSetupFactory) {
        $this->eavSetupFactory = $eavSetupFactory;
    }

    public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
    {
        $eavSetup = $this->eavSetupFactory->create(['setup' => $setup]);
        $eavSetup->addAttribute(\Magento\Catalog\Model\Category::ENTITY, 'attribute_id', [
            'type'     => 'int',
            'label'    => 'Your Category Attribute Name',
            'input'    => 'boolean',
            'source'   => 'Magento\Eav\Model\Entity\Attribute\Source\Boolean',
            'visible'  => true,
            'default'  => '0',
            'required' => false,
            'global'   => \Magento\Eav\Model\Entity\Attribute\ScopedAttributeInterface::SCOPE_STORE,
            'group'    => 'Display Settings',
        ]);
    }
}

Step #2: Display the Attribute

<!-- Namespace/Module/view/adminhtml/ui_component/category_form.xml -->
<?xml version="1.0"?>

    

        
            
                
                    boolean
                    checkbox
                    Your Category Attribute Name
                    toggle
                    
                        1
                        0
                    
                    0