leaflet Dynamic icon with filter - filter

Question

I'm trying to create an map with the leaflet-simple-csv-master (i'm a beginner). It's really nice and i'd like to show different icons with my types (for exemple 1 icon for schools, one for administrations,...). I succed to show my different icons when i have the map but when i click to the filter, my icons disappear. In fact it doesn't work because it do not recognize my variable when i use the filter and i can read that my img is no more logos/type1.png but logos/undefined.png.
This is my all code.
var basemap = new L.TileLayer(baseUrl, {maxZoom: 17, attribution: baseAttribution, subdomains: subdomains, opacity: opacity});
var center = new L.LatLng(0, 0);
var map = new L.Map('map', {center: center, zoom: 2, maxZoom: maxZoom, layers: [basemap]});
var popupOpts = {
autoPanPadding: new L.Point(5, 50),
autoPan: true
};
var points = L.geoCsv (null, {
firstLineTitles: true,
fieldSeparator: fieldSeparator,
onEachFeature: function (feature, layer) {
var popup = '<div class="popup-content"><table class="table table-striped table-condensed">';
for (var clave in feature.properties) {
var title = points.getPropertyTitle(clave).strip();
var attr = feature.properties[clave];
if (title == labelColumn) {
layer.bindLabel(feature.properties[clave], {className: 'map-label'});
}
if (attr.indexOf('http') === 0) {
attr = '<a target="_blank" href="' + attr + '">'+ attr + '</a>';
}
if (attr) {
popup += '<tr><th>'+title+'</th><td>'+ attr +'</td></tr>';
}
}
popup += "</table></popup-content>";
layer.bindPopup(popup, popupOpts);
},
pointToLayer: function (feature, latlng) {
var logo = feature.properties['type'];
return L.marker(latlng, {
icon:L.icon({
iconUrl: 'logos/'+logo+'.png',
shadowUrl: 'marker-shadow.png',
iconSize: [25,41],
shadowSize: [41, 41],
shadowAnchor: [13, 20]
})
});
},
filter: function(feature, layer) {
total += 1;
if (!filterString) {
hits += 1;
return true;
}
var hit = false;
var lowerFilterString = filterString.toLowerCase().strip();
$.each(feature.properties, function(k, v) {
var value = v.toLowerCase();
if (value.indexOf(lowerFilterString) !== -1) {
hit = true;
hits += 1;
return false;
}
});
return hit;
}
});
var hits = 0;
var total = 0;
var filterString;
var markers = new L.MarkerClusterGroup();
var dataCsv;
var addCsvMarkers = function() {
hits = 0;
total = 0;
filterString = document.getElementById('filter-string').value;
if (filterString) {
$("#clear").fadeIn();
} else {
$("#clear").fadeOut();
}
map.removeLayer(markers);
points.clearLayers();
markers = new L.MarkerClusterGroup(clusterOptions);
points.addData(dataCsv);
markers.addLayer(points);
map.addLayer(markers);
try {
var bounds = markers.getBounds();
if (bounds) {
map.fitBounds(bounds);
}
} catch(err) {
// pass
}
if (total > 0) {
$('#search-results').html("Showing " + hits + " of " + total);
}
return false;
};
var typeAheadSource = [];
function ArrayToSet(a) {
var temp = {};
for (var i = 0; i < a.length; i++)
temp[a[i]] = true;
var r = [];
for (var k in temp)
r.push(k);
return r;
}
function populateTypeAhead(csv, delimiter) {
var lines = csv.split("\n");
for (var i = lines.length - 1; i >= 1; i--) {
var items = lines[i].split(delimiter);
for (var j = items.length - 1; j >= 0; j--) {
var item = items[j].strip();
item = item.replace(/"/g,'');
if (item.indexOf("http") !== 0 && isNaN(parseFloat(item))) {
typeAheadSource.push(item);
var words = item.split(/\W+/);
for (var k = words.length - 1; k >= 0; k--) {
typeAheadSource.push(words[k]);
}
}
}
}
}
if(typeof(String.prototype.strip) === "undefined") {
String.prototype.strip = function() {
return String(this).replace(/^\s+|\s+$/g, '');
};
}
map.addLayer(markers);
$(document).ready( function() {
$.ajax ({
type:'GET',
dataType:'text',
url: dataUrl,
contentType: "text/csv; charset=utf-8",
error: function() {
alert('Error retrieving csv file');
},
success: function(csv) {
dataCsv = csv;
populateTypeAhead(csv, fieldSeparator);
typeAheadSource = ArrayToSet(typeAheadSource);
$('#filter-string').typeahead({source: typeAheadSource});
addCsvMarkers();
}
});
$("#clear").click(function(evt){
evt.preventDefault();
$("#filter-string").val("").focus();
addCsvMarkers();
});
});