Open street map with ACF

include-js.php

function properties_map_script() {
	
	wp_register_style(
		'leaflet',
		"https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.3.1/leaflet.css",
		array(),
		null
	);	
	
	wp_register_script(
			'maps-api-key',
			'https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.3.1/leaflet.js',
			null,
			null,
			true
	);
	
	wp_register_script(
			'maps-api-script',
			get_template_directory_uri() . "/js/open-street-map-script.js",
			array('jquery'),
			null,
			true
	);		
	
	if (is_singular( 'property' ) || is_post_type_archive( 'property' )) {
			wp_enqueue_script( 'maps-api-key' );
			wp_enqueue_script( 'maps-api-script' );
			
			wp_enqueue_style( 'leaflet' );
			
			if (is_singular( 'property' ) ) {
			
				$map_data[] =  get_property_map_data();
			
			} else {
				
				$map_data = get_all_properties_map_data();
				
			}
			 
			wp_localize_script( 'maps-api-key', 'properties', $map_data );
	}


}

add_action( 'wp_enqueue_scripts', 'properties_map_script' );


function get_property_map_data( $post_id = null ) {
	global $post;

	$post_id = is_null($post_id) ? $post->ID : $post_id;
	
  // ACF OPEN STREET MAP FIELD
	$location = get_field('property_map', $post_id);
	
	$thumb_attr = wp_get_attachment_image_src( get_post_thumbnail_id($post_id), 'thumbnail');

	return array( 
		'title'	=> get_the_title( $post_id ),
		'lat'	=> isset($location['lat']) ? $location['lat'] : '42.741222',
		'lng'	=> isset($location['lng']) ? $location['lng'] : '12.738521',
		'thumb'	=> $thumb_attr[0],
		'url'	=> get_the_permalink( $post_id )
	);
}

function get_all_properties_map_data($taxonomy = null) {
	
	if ( false === ( $loop = get_transient( 'map_properties' ) ) ) {
	
		$args = array( 'posts_per_page' => -1, 'post_type' => 'property', );
		$loop = get_posts( $args );
	
		set_transient( 'map_properties', $loop, 4 * HOUR_IN_SECONDS );
		
	}
	
	
	$map_data = array();
	
	foreach ( $loop as $post ) : setup_postdata( $post ); 
	
		$map_data[] = get_property_map_data( $post->ID );
	
	endforeach; 
	
	wp_reset_postdata();
	
	return  $map_data;

	
}