multiple-taxonomies-acf-field.php

<?php

if ( ! class_exists( 'AcfFieldMultipleCategories' ) && class_exists( 'acf_field' ) ) {

	class AcfFieldMultipleCategories extends acf_field {


		/**
		* This function will setup the field type data.
		*
		*  @type    function
		*  @date    5/03/2014
		*  @since   5.0.0
		*/
		function __construct() {

			// Vars.
			$this->name     = 'multiple_taxonomies';
			$this->label    = __( 'Taxonomies','acf' );
			$this->category = 'relational';
			$this->defaults = array(
				'taxonomies'    => array( 'category' ),
				'field_type'    => 'select',
				'multiple'      => 0,
				'allow_null'    => 0,
				'return_format' => 'id',
				'add_term'      => 0,
				'load_terms'    => 0,
				'save_terms'    => 0,
				);

			// Extra.
			add_action( 'wp_ajax_acf/fields/taxonomies/query',        array( $this, 'ajax_query' ) );
			add_action( 'wp_ajax_nopriv_acf/fields/taxonomies/query', array( $this, 'ajax_query' ) );

			// Do not delete!
			parent::__construct();
		}

		/**
		* Over 500 lines - almost every method copied from acf/includes/fields/class-acf-field-taxonomy.php
		* Some were tweaked where neccessary to load terms from multiple taxonomies.
		*/
	}

	new AcfFieldMultipleCategories();
}