Events Calendar to WP-API for AppPresser apps

events-calendar-api-apppresser.php

<?php
/*
Plugin Name: Add Events Calendar to AppPresser
Description: This plugin adds the Events Calendar CPT and some post meta data to the WP-API.
Version: 0.1
Author: Scott Bolinger
Author URI: https://apppresser.com
License: GPLv2
*/

/*
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

add_filter( 'register_post_type_args', 'app_tribe_type_args', 10, 2 );
function app_tribe_type_args( $args, $post_type ) {
 
    if ( 'tribe_events' === $post_type ) {
        $args['show_in_rest'] = true;
        // Optionally customize the rest_base or rest_controller_class
        $args['rest_base']             = 'tribe-events';
        $args['rest_controller_class'] = 'WP_REST_Posts_Controller';
    }
    return $args;
}


add_action( 'rest_api_init', 'sb_register_post_meta' );
function sb_register_post_meta() {
    register_rest_field( 'tribe_events', // any post type registered with API
        '_EventCost', // this needs to match meta key
        array(
            'get_callback'    => 'sb_get_meta',
            'update_callback' => null,
            'schema'          => null,
        )
    );
}
/**
 * Get the value of a meta field field
 *
 * @param array $object Details of current post.
 * @param string $field_name Name of field.
 * @param WP_REST_Request $request Current request
 *
 * @return mixed
 */
function sb_get_meta( $object, $field_name, $request ) {
    return get_post_meta( $object[ 'id' ], $field_name, true );
}


add_action( 'rest_api_init', 'sb_register_template_hook' );
function sb_register_template_hook() {
    register_rest_field( 'tribe_events', // any post type registered with API
        'appp',
        array(
            'get_callback'    => 'sb_get_hook_data',
            'update_callback' => null,
            'schema'          => null,
        )
    );
}
/**
 * Get the value of a meta field field
 *
 * @param array $object Details of current post.
 * @param string $field_name Name of field.
 * @param WP_REST_Request $request Current request
 *
 * @return mixed
 */
function sb_get_hook_data( $object, $field_name, $request ) {
	
	$data = [];
	// Add a featured image to the single post view in the app
	$data['post_list']['below_content'] = '<div class="sb-event-price">$' . get_post_meta( $object['id'], '_EventCost', 1 ) . '</div><div class="sb-event-date">' . get_post_meta( $object['id'], '_EventStartDate', 1 ) . '</div>';
	
	return $data;
}