CMB2 Field Type: Ajax Search

Custom fields for CMB2 to attach posts, users or terms to each others.

Once activated, this plugin adds three new field types post_ajax_search, user_ajax_search and term_ajax_search.

This plugin is a fork of CMB2 Field Type: Ajax Search which is an update of CMB2 Field Type: Post Search Ajax by Magina with support to attach posts, users or terms.

Installation

You can install this field type as you would a WordPress plugin:

• Download the plugin
• Place the plugin folder in your /wp-content/plugins/ directory
• Activate the plugin in the Plugin dashboard

Parameters

This fork adds the option of specifying a CSS selector as an attribute data-id-element on the ajax search field. The specified field will then be given the value of the ID of the selected post. The ajax search field will then show the actual value selected.
See example for usage.

Options :

• multiple (bool, default = false) : Turn field into a multiple attached objects
• limit (int, default = -1 : single selection) : Limit the number of posts that can be selected (-1 for unlimited)
• sortable (bool, default = false) : Allow selected items to be sort (only if multiple = true)
• query_args (array) : Query arguments to pass on each request

Query args:

• query_args accepts same parameters as WP_Query for post_ajax_search
• query_args accepts same parameters as WP_User_Query for user_ajax_search
• query_args accepts same parameters as WP_Term_Query for term_ajax_search

Examples

add_action( 'cmb2_admin_init', 'cmb2_ajax_search_metabox' );
function cmb2_ajax_search_metabox() {

	$prefix = 'your_prefix_demo_';

	$cmb_demo = new_cmb2_box( array(
		'id'            => $prefix . 'metabox',
		'title'         => __( 'Attached posts Metabox', 'cmb2' ),
		'object_types'  => array( 'page', 'post' ), // Post type
	) );

	// Single post
	$cmb_demo->add_field( array(
		'name'          => __( 'Attached post', 'cmb2' ),
		'desc'          => __( 'Field description (optional)', 'cmb2' ),
		'id'            => $prefix . 'post',
		'type'          => 'post_ajax_search',
		'query_args'	=> array(
			'post_type'			=> array( 'post' ),
			'posts_per_page'	=> -1
		)
	) );

	// Multiple posts
	$cmb_demo->add_field( array(
		'name'          => __( 'Multiple posts', 'cmb2' ),
		'desc'          => __( 'Field description (optional)', 'cmb2' ),
		'id'            => $prefix . 'posts',
		'type'          => 'post_ajax_search',
		'multiple-item' => true,
		'limit'      	=> 10,
		'query_args'	=> array(
			'post_type'			=> array( 'post', 'page' ),
			'post_status'		=> array( 'publish', 'pending' )
		)
	) );

	// Single user
	$cmb_demo->add_field( array(
		'name'          => __( 'Attached user', 'cmb2' ),
		'desc'          => __( 'Field description (optional)', 'cmb2' ),
		'id'            => $prefix . 'user',
		'type'          => 'user_ajax_search',
		'query_args'	=> array(
			'role'				=> array( 'Subscriber' ),
			'search_columns' 	=> array( 'user_login', 'user_email' )
		)
	) );

	// Multiple users
	$cmb_demo->add_field( array(
		'name'          => __( 'Multiple users', 'cmb2' ),
		'desc'          => __( 'Field description (optional)', 'cmb2' ),
		'id'            => $prefix . 'users',
		'type'          => 'user_ajax_search',
		'multiple-item' => true,
		'limit'      	=> 5,
		'query_args'	=> array(
			'role__not_in'		=> array( 'Administrator', 'Editor' ),
		)
	) );

	// Single term
	$cmb_demo->add_field( array(
		'name'          => __( 'Attached term', 'cmb2' ),
		'desc'          => __( 'Field description (optional)', 'cmb2' ),
		'id'            => $prefix . 'term',
		'type'          => 'term_ajax_search',
		'query_args'	=> array(
			'taxonomy'			=> 'category',
			'childless'			=> true
		)
	) );

	// Multiple terms
	$cmb_demo->add_field( array(
		'name'          => __( 'Multiple terms', 'cmb2' ),
		'desc'          => __( 'Field description (optional)', 'cmb2' ),
		'id'            => $prefix . 'terms',
		'type'          => 'term_ajax_search',
		'multiple-item' => true,
		'limit'      	=> -1,
		'query_args'	=> array(
			'taxonomy'			=> 'post_tag',
			'hide_empty'		=> false
		)
	) );

}

$cmb_demo->add_field( array(
			'name'             => __( 'Data ID', 'cmb2' ),
			'desc'             => __( 'Field description (optional), 'cmb2' ),
			'id'               => 'mps_meta_poster_movie_ajax',
			'save_field'       => false,
			'type'             => '#post_ajax_search_hidden',
			'query_args'	     => array(
				'post_type'			 => array( 'post' ),
				'posts_per_page' => -1,
			),
			'attributes'       => array(
				'data-id-element' => '#mps_meta_poster_movie_id',
			),
) );

$cmb_demo->add_field( array(
			'name'             => __( 'Data ID Hidden', 'cmb2' ),
			'id'               => 'post_ajax_search_hidden',
			'type'             => 'hidden',
) );

Customize results output

You can use cmb_{$field_id}_ajax_search_result_text to customize the text returned from ajax searches and cmb_{$field_id}_ajax_search_result_link to customize the link, check next example:

add_filter( 'cmb_your_prefix_demo_posts_ajax_search_result_text', 'cmb2_ajax_search_custom_field_text', 10, 3 );
function cmb2_ajax_search_custom_field_text( $text, $object_id, $object_type ) {
	$text = sprintf( '#%s - %s', $object_id, $text ); // #123 - Post title

	return $text;
}

add_filter( 'cmb_your_prefix_demo_posts_ajax_search_result_link', 'cmb2_ajax_search_custom_field_link', 10, 3 );
function cmb2_ajax_search_custom_field_link( $link, $object_id, $object_type ) {
	if( $object_id == 123 ) {
		$link = '#';
	}

	return $link;
}

Retrieve the field value

If multiple == false will return the ID of attached object: get_post_meta( get_the_ID(), 'your_field_id', true );

If multiple == true will return an array of IDs of attached object: get_post_meta( get_the_ID(), 'your_field_id', false );

Changelog

1.0.3

• Fixed issues with repeatable fields
• Removed unused code
• Moved to new paramenter multiple-item to avoid conflicts with CMB2

1.0.2

• Updated devbridgeAutocomplete lib

1.0.1

• Group fields support
• Widget area support
• Use of devbridgeAutocomplete() instead of autocomplete() to avoid errors

1.0.0

• Initial commit