Category Custom Fields

category-custom-fields.php

<?php

/*
Plugin Name: Category Custom Fields
Author: scribu
*/

class Category_Custom_Fields {

	function init() {
		add_action( 'load-edit-tags.php', array( __CLASS__, 'save' ) );
		add_action( 'category_edit_form', array( __CLASS__, 'form' ) );
	}

	function save() {
		if ( !isset( $_POST['action'] ) || 'editedtag' != @$_POST['action'] )
			return;

		$term_id = $_POST['tag_ID'];
		$taxonomy = $_POST['taxonomy'];

		// Check if the term exists
		$term = get_term( $term_id, $taxonomy );
		if ( is_null( $term ) || is_wp_error( $term ) )
			return;

		// Update the fields
		update_term_meta( $term_id, 'field-1', $_POST[ 'field-1' ] );
		update_term_meta( $term_id, 'field-2', $_POST[ 'field-2' ] );
	}

	function form( $term ) {
		echo scbForms::table( array(
			array(
				'title' => 'Field 1',
				'name' => 'field-1',
				'type' => 'text',
				'value' => get_term_meta( $term->term_id, 'field-1', true )
			),
			array(
				'title' => 'Field 2',
				'name' => 'field-2',
				'type' => 'checkbox',
				'checked' => get_term_meta( $term->term_id, 'field-2', true )
			)
		) );
	}
}

Category_Custom_Fields::init();