Get visitor current location to the map as marker

• sonjoe

• July 14, 2017 at 5:31 am

Hi. I am trying to get visitor locations to the map as marker, to show, where currently visitor is, to compare with another markers etc.. I get his location with this. This works.

if ("geolocation" in navigator) {
		    // ak je geo, tak spustime lokaciu
		    navigator.geolocation.getCurrentPosition(function(position) {
		        // tu si naplnim premenne
		        var lat = position.coords.latitude,
		            lng = position.coords.longitude;
		        console.log(lat, lng);
		        // nasetujeme hodnoty
		        $('.currentmarker').attr('data-lat', lat).attr('data-lng', lng);
		    });

Then in query i loop all markers from post type. As is in documentation. I am trying to solve this issue like this

<div class="marker currentmarker" data-lat="" data-lng="">
					<div class="map-popup">
						My position
					</div>
				</div>
								
				<?php $args = array(
					'post_type' => 'gastronomie',
					//'post_parent' => 22,
					'posts_per_page' => 50,
					'order' => 'DESC',
					'orderby' => 'date',
					'lang' => 'de'
					//'paged' => $paged
				);
				query_posts( $args );
				
				$delay=0;
				
				$i=0;
				
				while ( have_posts() ) : the_post();
				
				$location = get_field('location');
				
				?>

					<div class="marker" data-lat="<?php echo $location['lat']; ?>" data-lng="<?php echo $location['lng']; ?>" data-marker="<?php the_field('pin_color'); ?>">
						<div class="map-popup">
							<a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
						</div>
					</div>
				
				<?php $delay+=0.2; ?>
				
				<?php endwhile; wp_reset_query(); ?>

As you see, at the top of my query i have also the <div class=”marker”> here i try to get the user longtitude and latitude with .attr. But it not working. I think it is because the map is rendered first and then is render the marker div above the query. So i think the current position of visitor should be implemented to the googlemap JS. But i am not good in jQuery, only copy paste 🙂

here is my googlemap.js

(function($) {

/*
*  new_map
*
*  This function will render a Google Map onto the selected jQuery element
*
*  @type	function
*  @date	8/11/2013
*  @since	4.3.0
*
*  @param	$el (jQuery element)
*  @return	n/a
*/

function new_map( $el ) {
	
	// var
	var $markers = $el.find('.marker');
	
	// vars
	var args = {
		zoom		: 16,
		center		: new google.maps.LatLng(0, 0),
		mapTypeId	: google.maps.MapTypeId.HYBRID
	};
	
	
	// create map	        	
	var map = new google.maps.Map( $el[0], args);
	
	
	// add a markers reference
	map.markers = [];
	
	
	// add markers
	$markers.each(function(){
		
    	add_marker( $(this), map );
		
	});
	
	// center map
	center_map( map );
	
	
	// add marker cluster
	markerCluster( map.markers, map );
	
	
	// return
	return map;
	
}

/*
*  add_marker
*
*  This function will add a marker to the selected Google Map
*
*  @type	function
*  @date	8/11/2013
*  @since	4.3.0
*
*  @param	$marker (jQuery element)
*  @param	map (Google Map object)
*  @return	n/a
*/

function add_marker( $marker, map ) {

	// var
	var latlng = new google.maps.LatLng( $marker.attr('data-lat'), $marker.attr('data-lng') );
	
	var defaultMarker = {
		path: 'M 0,0 C -2,-20 -10,-22 -10,-30 A 10,10 0 1,1 10,-30 C 10,-22 2,-20 0,0 z M -2,-30 a 2,2 0 1,1 4,0 2,2 0 1,1 -4,0',
	    fillColor: '#de6b6b',
	    fillOpacity: 1
	};
	
	var blueMarker = {
		//path: 'M -1,0 A 1,1 0 0 0 1,0 1,1 0 0 0 -1,0 z',
	    //path: google.maps.SymbolPath.CIRCLE,
	    //fillColor: '#42bd2c',
	    //fillOpacity: 1,
	    //scale: 3,
	    //strokeColor: "#42bd2c",
	    //strokeWeight: 3,
	    path: 'M 0,0 C -2,-20 -10,-22 -10,-30 A 10,10 0 1,1 10,-30 C 10,-22 2,-20 0,0 z M -2,-30 a 2,2 0 1,1 4,0 2,2 0 1,1 -4,0',
	    fillColor: '#3292d6',
	    fillOpacity: 1
	}
	
	//Check your marker type, if it's green then set that otherwise leave it grey
	var markerType = $marker.attr('data-marker')=="bluemarker"?blueMarker:defaultMarker;

	// create marker
	var marker = new google.maps.Marker({
		position	: latlng,
		icon		: markerType,
		map			: map
	});

	// add to array
	map.markers.push( marker );

	// if marker contains HTML, add it to an infoWindow
	if( $marker.html() )
	{
		// create info window
		var infowindow = new google.maps.InfoWindow({
			content		: $marker.html()
		});

		// show info window when marker is clicked
		google.maps.event.addListener(marker, 'click', function() {

			infowindow.open( map, marker );

		});
	}

}

/*
*  center_map
*
*  This function will center the map, showing all markers attached to this map
*
*  @type	function
*  @date	8/11/2013
*  @since	4.3.0
*
*  @param	map (Google Map object)
*  @return	n/a
*/

function center_map( map ) {

	// vars
	var bounds = new google.maps.LatLngBounds();

	// loop through all markers and create bounds
	$.each( map.markers, function( i, marker ){

		var latlng = new google.maps.LatLng( marker.position.lat(), marker.position.lng() );

		bounds.extend( latlng );

	});

	// only 1 marker?
	if( map.markers.length == 1 )
	{
		// set center of map
	    map.setCenter( bounds.getCenter() );
	    map.setZoom( 16 );
	}
	else
	{
		// fit to bounds
		map.fitBounds( bounds );
	}

}

function markerCluster( markers, map ) {
	var markerCluster = new MarkerClusterer(map, markers, {imagePath: 'https://developers.google.com/maps/documentation/javascript/examples/markerclusterer/m'});
	console.log( markers );
}

/*
*  document ready
*
*  This function will render each map when the document is ready (page has loaded)
*
*  @type	function
*  @date	8/11/2013
*  @since	5.0.0
*
*  @param	n/a
*  @return	n/a
*/
// global var
var map = null;

$(document).ready(function(){

	$('.acf-map').each(function(){

		// create map
		map = new_map( $(this) );

	});

});

})(jQuery);

Have anyone done this before? Can someone help me please?
Thank you 🙂