Display additional fields in app_my_appointments shortcode

appointment-display-additional-fields.php

<?php

/**
* Plugin Name: Appointment display additional fields
* Plugin URI: https://premium.wpmudev.org/
* Description: Display additional fields in app_my_appointments shortcode
* Author: Ariful Islam @ WPMUDEV
* Author URI: https://premium.wpmudev.org/profile/itsarifulislam
* License: GPLv2 or later
*/


if ( ! defined( 'ABSPATH' ) ) {
	exit;
}


if ( ! class_exists( 'AppoinementDisplayAdditionalFields' ) ) {

	class AppoinementDisplayAdditionalFields {

		private static $_instance = null;

		public static function get_instance() {

			if ( is_null( self::$_instance ) ) {
				self::$_instance = new AppoinementDisplayAdditionalFields();
			}

			return self::$_instance;

		}


		private function __construct() {

			if ( !function_exists('appointments_get_app_additional_fields') ) return;

			// Add Additional Column after date column
			add_filter('app_my_appointments_column_name', array( $this, 'app_my_appointments_column_name' ), 10, 1);

			// Add Additional Column Value after date column
			add_filter('app-shortcode-my_appointments-after_date', array( $this, 'app_shortcode_my_appointments_after_date' ), 10, 2);
			
		}


		public function app_my_appointments_column_name( $rows ) {

			// Create Array of old row headings
			$rows = array_map( function($row) {
				return $row . '</th>';
			}, array_filter( explode( '</th>', $rows )));

			// Move "Status" row from position 3 to 4 
			$rows[4] = $rows[3];

			// Assign New row on position 3 before "Status" row
			$rows[3] = '<th class="my-appointments-custom-field">'. __( 'My Field Title', 'appointments' ).'</th>'; // Change the "My Field Title" as you need.

			// Return all the rows as string including new rows.
			return implode('', $rows);

		}


		public function app_shortcode_my_appointments_after_date( $row, $r ) {

			global $appointments;

			// Get the additional fields as array
			$additional_fields = appointments_get_app_additional_fields( $r->ID );

			// Check the additional field is exist and generate the row
			if ( $additional_fields && isset($additional_fields['cufield1']) ) { // change the "cufield1" to your field name, make sure all are lower case and no space.
				$row = '<td>'. $additional_fields['cufield1'] .'</td>'; // change the "cufield1" to your field name, make sure all are lower case and no space.
			}

			// Return the row, which will appear after date
			return $row;

		}

	}


	function render_appoinement_display_additional_fields(){

		$GLOBALS['AppoinementDisplayAdditionalFields'] = AppoinementDisplayAdditionalFields::get_instance();

	}

	add_action( 'plugins_loaded', 'render_appoinement_display_additional_fields' );

}