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google maps onClick marker

Posted on 2008-10-18
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Last Modified: 2012-05-05
ok I have a map that displays neighboring locations with a small marker and the current location with a large marker. (see the code below.)

The neighboring locations are created with a php loop.

I want an onclick event of the small markers to send my users to a new page.

I tried this :
 GEvent.addListener(marker, "click", function() {
          window.location.href="wiki_locations.php?loc_id=";
        });

but it adds the onclilck event to the large marker only.

the other problem I dont know how to solve yet is the location

wiki_locations.php?loc_id=

I need to add a variable loc_id= to the location with a variable unique to the marker which will also come from my php loop.  

how do I go about this?
var tinyIcon = new GIcon();
tinyIcon.image = "http://labs.google.com/ridefinder/images/mm_20_red.png";
tinyIcon.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
tinyIcon.iconSize = new GSize(12, 20);
tinyIcon.shadowSize = new GSize(22, 20);
tinyIcon.iconAnchor = new GPoint(6, 20);
tinyIcon.infoWindowAnchor = new GPoint(5, 1);
 
// Set up our GMarkerOptions object literal
markerOptions = { icon:tinyIcon };
	  
      function createMarker(point) {
        var marker = new GMarker(point);
		
        GEvent.addListener(marker, "click", function() {
          window.location.href="wiki_locations.php?loc_id=";
        });
        return marker;
      }
 
      // Display the map, with some controls and set the initial location 
      var map = new GMap2(document.getElementById("map"));
      map.addControl(new GLargeMapControl());
      //map.addControl(new GMapTypeControl());
      map.setCenter(new GLatLng(<? echo $glat; ?>,<? echo $glong; ?>),9);
    
 
      
//loop through neighbouring locations
<?
while ($get_info = mysql_fetch_row($result2)){	
 
?>
   var point = new GLatLng(<? echo $get_info[3]; ?>,<? echo $get_info[4]; ?>);
      var marker = createMarker(point)
       map.addOverlay(new GMarker(point, markerOptions));
  <? } ?>
	   // show large marker for current location.
var point = new GLatLng(<? echo $glat; ?>,<? echo $glong; ?>);
      var marker = createMarker(point)
      map.addOverlay(marker);
    }
    
    // display a warning if the browser was not compatible
    else {
      alert("Sorry, the Google Maps API is not compatible with this browser");
    }

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Question by:jimfrith
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6 Comments
 
LVL 16

Expert Comment

by:sh0e
ID: 22750406
You create new Gmarker for each neighbor, to which the click event is not binded.
 36: map.addOverlay(new GMarker(point, markerOptions));
should be
 map.addOverlay(marker);
If you need markerOptions, you will need to modify your createMarker function.

The location should look something like this:
window.location.href="wiki_locations.php?loc_id=<?php echo $loc_id ?>";
0
 

Author Comment

by:jimfrith
ID: 22750505
Im using map.addOverlay(marker); for the large marker.  there are two types here.

map.addOverlay(new GMarker(point, markerOptions));
creates the small markers and is working.  except that my link is being added to the large marker and not the small ones.

also I can't add the php variable directly to the location because that would send all of the clicks to the same place.  I need to know how to add the location variable to the marker in my loop. so that each marker has a unique link.
 
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Author Comment

by:jimfrith
ID: 22750544
actually if I just declare a variable in my loop

var loc = 'wiki_locations.php?loc_id=<? echo $get_info[0]; ?>';

then maybe I can create the link like this:

 function createMarker(point) {
        var marker = new GMarker(point);
            
        GEvent.addListener(marker, "click", function() {
          window.location.href=loc;
        });
        return marker;
      }

I still don't know how to add the link to the small markers rather than the large one though.
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LVL 16

Expert Comment

by:sh0e
ID: 22750614
The problem right now is that you are creating a new GMarker twice for the small ones.  But the only one making it to the overlay (becoming visible) is not being binded to an event.

//replace line 34 to 36
var point = new GLatLng(<? echo $get_info[3]; ?>,<? echo $get_info[4]; ?>);
      var marker = createMarker(point)
 
      var marker1 = new GMarker(point, markerOptions);
        GEvent.addListener(marker, "click", function() {
          window.location.href="wiki_locations.php?loc_id=";
        });
       map.addOverlay(marker1);

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LVL 16

Accepted Solution

by:
sh0e earned 2000 total points
ID: 22750616
Argh.  I made a mistake in my last post and accidentally clicked submit with the wrong code. Bah, third time today.
//replace line 34 to 36
var point = new GLatLng(<? echo $get_info[3]; ?>,<? echo $get_info[4]; ?>);
      var marker = createMarker(point)
 
      var marker1 = new GMarker(point, markerOptions);
        GEvent.addListener(marker1, "click", function() {
          window.location.href="wiki_locations.php?loc_id=";
        });
       map.addOverlay(marker1);

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Author Closing Comment

by:jimfrith
ID: 31507500
Brilliant! thanks for that.  thats exactly what I needed.
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