I’m implementing Google Maps onto a WordPress website that will allow the user to add locations to the Map using Advanced Custom Fields. The map loads in great, but the icons/markers don’t seem to be loading in right. I get an error that reads, “Uncaught TypeError: Cannot read property ‘icon’ of undefined” in the Chrome Developer Tool Inspector.
Do I need to add anything? I’m new to Google Maps and firing it off and what not. Here’s what I’m using:
<?php // Index template
get_header(); ?>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<div class="twelve column">
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class="intro">
<?php the_excerpt(); ?>
<hr>
</div>
<?php the_content(); ?>
<header class="clearfix"></header>
<div id="mapcanvas"></div>
<?php
// For creating multiple, customized loops.
// http://codex.wordpress.org/Class_Reference/WP_Query
$custom_query = new WP_Query('post_type=locations'); // exclude category 9
while($custom_query->have_posts()) : $custom_query->the_post(); ?>
<?php if(get_field('link')): ?>
<div>
<?php while(has_sub_field('link')): ?>
<div>
<p><?php the_sub_field('url'); ?></p>
</div>
<?php endwhile; ?>
</div>
<?php endif; ?>
<?php endwhile; ?>
<?php wp_reset_postdata(); // reset the query ?>
<?php
function get_single_term($post_id, $taxonomy)
{
$terms = wp_get_object_terms($post_id, $taxonomy);
if(!is_wp_error($terms)) {
return '<a href="'.get_term_link($terms[0]->slug, $taxonomy).'">'.$terms[0]->name.'</a>';
}
}
$i = 0;
// For creating multiple, customized loops.
// http://codex.wordpress.org/Class_Reference/WP_Query
$custom_query = new WP_Query('post_type=location&posts_per_page=-1');
while($custom_query->have_posts()) : $custom_query->the_post();
$title = get_the_title(); // Location title
$map = get_field('location'); // ACF location contains address and coordinates
$terms = strip_tags( get_the_term_list( $post->ID, 'distributors', '', ' & ' )); // Get distributor terms and rm links
$info = '<strong>' . $terms . '</strong><br>' . $title; // Info window content
$url = the_sub_field('url');
if(get_field('link')){
echo '<ul>';
while(has_sub_field('link')){
$info .= '<li><a href="http://'.get_sub_field('url').'">'.get_sub_field('url').'</a></li>';
}
echo '</ul>';
}
$location[$i][0] = $title; // Store the post title
$location[$i][1] = $map['coordinates']; // Store the ACF coordinates
$location[$i][2] = json_encode($info); // Store info window content
$location[$i][3] = strip_tags( get_single_term( $post->ID, 'distributor' )); // Get first term for marker icon
$i ++;
endwhile; ?>
<?php wp_reset_postdata(); // reset the query ?>
<script>
$(function initialize() {
// Center map on our main location
var myLatLng = new google.maps.LatLng(41.583013,-93.63701500000002);
var map;
var bounds = new google.maps.LatLngBounds();
// https://developers.google.com/maps/documentation/javascript/styling
// Create an array of styles.
var styles = [
{
stylers: [
{ saturation: -99.9 }
]
}
];
// Create a new StyledMapType object, passing it the array of styles,
// as well as the name to be displayed on the map type control.
var styledMap = new google.maps.StyledMapType(styles, {name: 'exile'});
// Create a map object, and include the MapTypeId to add
// to the map type control.
var mapOptions = {
mapTypeId: 'roadmap',
center: myLatLng,
zoom: 8,
disableDefaultUI: false,
scrollwheel: true,
draggable: true
};
// Display a map on the page
map = new google.maps.Map(document.getElementById("mapcanvas"), mapOptions);
map.setTilt(45);
//Associate the styled map with the MapTypeId and set it to display.
map.mapTypes.set('exile', styledMap);
map.setMapTypeId('exile');
// Marker icons
typeObject = {
"Home" : {
"icon" : new google.maps.MarkerImage('img/target.png', new google.maps.Size(28,28), new google.maps.Point(0,0), new google.maps.Point(36,14)),
"shadow" : new google.maps.MarkerImage('http://maps.google.com/mapfiles/shadow50.png', new google.maps.Size(40,34))
},
"Others" : {
"icon" : new google.maps.MarkerImage('img/beer-mug.png', new google.maps.Size(18,26), new google.maps.Point(0,0), new google.maps.Point(9,26)),
"shadow" : new google.maps.MarkerImage('http://maps.google.com/mapfiles/shadow50.png', new google.maps.Size(40,34))
}
}
// http://wrightshq.com/playground/placing-multiple-markers-on-a-google-map-using-api-3/
// Multiple Markers
var markers = [
["Exile Brewing Co", 41.583013,-93.63701500000002,"Others"],
<?php
if (count($location)>0) {
foreach ($location as $key => $value){
if ($key < (count($location)-1)){
echo '["' . $location[$key][0] . '",' . $location[$key][1] . ',"' . $location[$key][3] . '"], ' . "n";
} else {
echo '["' . $location[$key][0] . '",' . $location[$key][1] . ',"' . $location[$key][3] . '"]';
}
}
}
?>
];
// Info Window Content
var infoWindowContent = [
["<strong>Exile Brewing Co.</strong><br>1514 Walnut Street, Des Moines"],
<?php
if (count($location)>0) {
foreach ($location as $key => $value){
if ($key < (count($location)-1)) {
echo '[' . $location[$key][2] . '], ' . "n";
} else {
echo '[' . $location[$key][2] . ']';
}
}
}
?>
];
// Display multiple markers on a map
var infoWindow = new google.maps.InfoWindow(), marker, i;
// Loop through our array of markers & place each one on the map
for( i = 0; i < markers.length; i++ ) {
var position = new google.maps.LatLng(markers[i][1], markers[i][2]); // ACF coordinates
var icon = typeObject[markers[i][3]]['icon'];
var shadow = typeObject[markers[i][3]]['shadow'];
bounds.extend(position);
marker = new google.maps.Marker({
position: position,
map: map,
title: markers[i][0],
icon: icon,
shadow: shadow
});
// Allow each marker to have an info window
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infoWindow.setContent(infoWindowContent[i][0]);
infoWindow.open(map, marker);
}
})(marker, i));
// Automatically center the map fitting all markers on the screen
//map.fitBounds(bounds);
}
// Override our map zoom level once our fitBounds function runs (Make sure it only runs once)
var boundsListener = google.maps.event.addListener((map), 'bounds_changed', function(event) {
this.setZoom(15);
google.maps.event.removeListener(boundsListener);
});
});
</script>
<div id="panel">
Search within
<input id="address" type="textbox" value="10">
miles of zipcode
<input id="address" type="textbox" value="50266">
<input class = "button" type="button" value="Find it!" onclick="codeAddress()">
</div>
<footer class="clearfix"></footer>
<?php endwhile;?>
<?php endif; ?>
</div>
</div>
<?php get_footer(); ?>
Here’s the link to the page I’m working on too:
http://exilebrewing.com/locations/
Any help is appreciated, thanks!
The
typeObjectcontains 2 properties (HomeandOthers)Your script will fail when the 4th item of a item in
markersdoesn’t match 1 of these property-names.This currently happens:
You may either fix
markersor use a fallback when the property can’t be found: