[Cartoweb-users] Show layers in a defined order

Oliver Christen oliver.christen at camptocamp.com
Tue Oct 9 05:18:23 EDT 2007

mmm, maybe you can trigger the layer selection by using the filter layer_select=layer_to_select_1,layer_to_select_2,... at the same time you do the layer reorder call.
if im not wrong, the filter will trigger the layer selection before layerReorder is called, meaning the layers *should* be in selectedMsLayerIds

  ----- Original Message ----- 
  From: Simon ORTET 
  To: Oliver Christen 
  Cc: cartoweb 
  Sent: Tuesday, October 09, 2007 10:25 AM
  Subject: Re: [Cartoweb-users] Show layers in a defined order

  Hi Oliver

  On line 478 I have : $this->orderedMsLayerIds[] = $this->selectedMsLayerIds[$id];
  Cartoweb can't find the $id index in the selectedMsLayerIds collection.
  I made a print_r of the selectedMsLayerIds collection and i miss a layer that i checked by javascript chargeVue() function. So i assumed that Cartoweb needs first a CartoWeb.trigger('Layers.LayerShowHide'); call to gather the layers checked in the tree and update its collection. And only then, i can make the CartoWeb.trigger('LayerReorder.Apply'); to reorder these layers.

  The problem is that i want to do that in only 1 ajax call. I'd like to avoid writing a new plugin. What could you advise me?

  Thanks for your help.
  Simon Ortet

  Oliver Christen a écrit : 
    what do you have at line 478 of your ClientLayerReorder.php file?
    I only see a comment at that line

      ----- Original Message ----- 
      From: Simon ORTET 
      To: cartoweb 
      Sent: Monday, October 08, 2007 10:15 AM
      Subject: [Cartoweb-users] Show layers in a defined order

      Hi everyone.

      I'm trying to do a 2 in 1 action with Cartoweb: Show some layers in a special order. So it means i have to check some layers in the layers tree and reorder them. Finally i make the ajax call to make Cartoweb apply the changes.

      The problem is Cartoweb seems not to know the layers i just checked. Here's the error message.

version: 3.3.0 [$Revision: 1.2 $]
class:   CartocommonException
message:   Error [8, Undefined index:  1, /opt/cartoweb/cartoweb3/projects/aeag/plugins/layerReorder/client/ClientLayerReorder.php, 478]
      So here's the function i made to do this.

        function chargeVue() {    
            // Here i get the layers i need to show in a field of my form
            for (var i=0; i<$('selectVue').options.length; i++) {
              if ($('selectVue').options[i].selected ) {
                selectione = $('selectVue').options[i].value;
            // Here i check the layers i got in the layer tree
            var tabSel = $('vue_'+selectione).value.split(";");
            var tabOrdre = new Array();
            var celts = $('layersroot').getElementsByTagName('input');

            for (var j = 0; j < celts.length; j++) {
                if (!celts[j].checked && inArray(tabSel,celts[j].value)) {
                    celts[j].checked = true;
                    // Here i store the order of the layers in the layers tree
                    celts[j].checked = false;
            // Here i fill an array with the new layers order
            var tabNewOrdre = new Array();
            for (j = 0; j < tabSel.length; j++) {
                // Ajoute l'indice de la couche dans tabOrdre
            $('layersReorder').value = tabNewOrdre.join(",");
            // Here i update the map

      Is there a way to achieve this without making 2 ajax calls (one to check the layers, the other to order them)?

      Thanks for your help

      Simon Ortet

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      Cartoweb-users at lists.maptools.org
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