# betterdocs/4.2.0/includes/REST/CategoryField.php

BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot, version 4.2.0. 100 lines.

- Page: https://pluginprobe.com/plugins/betterdocs/4.2.0/code/includes/REST/CategoryField.php
- Raw: https://pluginprobe.com/plugins/betterdocs/4.2.0/raw/includes/REST/CategoryField.php
- Modified: 2024-12-09T12:10:16+00:00

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```php
<?php

namespace WPDeveloper\BetterDocs\REST;

use WPDeveloper\BetterDocs\Core\BaseAPI;

class CategoryField extends BaseAPI {
	/**
	 * @return mixed
	 */
	public function register() {
		$this->register_field(
			'doc_category',
			'doc_category_order',
			[
				'get_callback' => [ $this, 'doc_category_order' ]
			]
		);
		$this->register_field(
			'doc_category',
			'thumbnail',
			[
				'get_callback' => [ $this, 'thumbnail_image' ]
			]
		);
		$this->register_field(
			'doc_category',
			'handbookthumbnail',
			[
				'get_callback' => [ $this, 'handbook_thumbnail_image' ]
			]
		);
		$this->register_field(
			'doc_category',
			'subcategories_count',
			[
				'get_callback' => [ $this, 'get_subcategory_count' ]
			]
		);
		$this->register_field(
			'doc_category',
			'total_docs_count',
			[
				'get_callback' => [ $this, 'total_docs_count' ]
			]
		);
		$this->register_field(
			'doc_category',
			'last_updated_time',
			[
				'get_callback' => [ $this, 'last_updated_time' ]
			]
		);
	}

	public function last_updated_time( $object ) {
		$date = betterdocs()->query->latest_updated_date( $object['taxonomy'], $object['slug'] );
		return $date;
	}

	public function doc_category_order( $object ) {
		$doc_category_order = get_term_meta( $object['id'], 'doc_category_order', true );
		if ( ! $doc_category_order ) {
			return;
		}

		return $doc_category_order;
	}

	public function thumbnail_image( $object ) {
		$attachment_id = get_term_meta( $object['id'], 'doc_category_image-id', true );
		if ( ! $attachment_id ) {
			return;
		}

		return wp_get_attachment_url( $attachment_id );
	}

	public function handbook_thumbnail_image( $object ) {
		$handbook_img_id = get_term_meta( $object['id'], 'doc_category_thumb-id', true );

		if ( ! $handbook_img_id ) {
			return;
		}

		return wp_get_attachment_url( $handbook_img_id );
	}

	public function get_subcategory_count( $object ) {
		$sub_terms_count = count( betterdocs()->query->get_all_child_term_ids( 'doc_category', $object['id'] ) );

		return $sub_terms_count;
	}

	public function total_docs_count( $object ) {
		$docs_count = betterdocs()->query->get_docs_count( (object) $object, false );
		return $docs_count;
	}
}

```