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Created April 1, 2015 19:36
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Leaflet-CartoDB Data Collection Tool
Raw
index.html
<!DOCTYPE html>
<html>
<head>
<title>Leaflet to CartoDB - Point Collection Tool Beta</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.css" />
<link rel="stylesheet" href="http://leaflet.github.io/Leaflet.draw/leaflet.draw.css" />
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
<style>
@import url(http://fonts.googleapis.com/css?family=Open+Sans);
body {
margin: 0px;
font-family: 'Open Sans', Helvetica, sans-serif;
}
img {
float: left;
padding-right: 10px;
}
p {
font-size: 15px;
line-height: 25px;
}
h1 {
line-height: 60px;
margin-top: 0px;
margin-bottom: 0px;
font-weight: lighter;
}
#wrapper {
width: 750px;
}
#map {
width: 750px;
margin: 0 auto;
height: 375px;
}
#controls {
width: 100%;
margin: 0 auto;
float: left;
}
#form {
margin-top: 5px;
font-size: 12px;
text-align: left;
line-height: 16px;
width:375px;
float: left;
}
#header {
margin-top: 0px;
margin-bottom: 0px;
}
#credits p {
margin-top: 5px;
font-size: 12px;
text-align: right;
line-height: 16px;
}
</style>
</head>
<body>
<div id="wrapper">
<div id="header">
<h1>Leaflet Data Collection Tool</h1>
</div>
<div id="map"></div>
<div id="controls">
<p>Click points for more information, or add your own.</br></p>
<input type="button" onclick="startEdits()" value="Click to Start Editing">
<input type="button" onclick="stopEdits()" value="Stop Your Editing Session"><br>
<div id="credits"><p>#webMapWorkshop - &copy;2015, Mike Foster</p></div>
</div>
</div>
<div id="dialog" title="Point Information">
<form>
<fieldset>
<label for="username">Your Name</label>
<input type="text" name="username" id="username" value="<your name>" class="text ui-widget-content ui-corner-all">
<label for="description">About this Point</label>
<input type="text" name="description" id="description" value="<description>" class="text ui-widget-content ui-corner-all">
<!-- Allow form submission with keyboard without duplicating the dialog button -->
<input type="submit" tabindex="-1" style="position:absolute; top:-1000px">
</fieldset>
</form>
</div>
<!-- include cartodb.js library -->
<script src="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.js"></script>
<script src="http://leaflet.github.io/Leaflet.draw/leaflet.draw.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<script>
// Create Leaflet map object
var map = L.map('map',{ center: [42.381899, -71.122499], zoom: 13});
// Add Tile Layer basemap
L.tileLayer('http://tiles.mapc.org/basemap/{z}/{x}/{y}.png', {
attribution: 'Tiles by <a href="http://mapc.org">MAPC</a>, Data by <a href="http://mass.gov/mgis">MassGIS</a>',
maxZoom: 17,
minZoom: 9
}).addTo(map);
// Declare Variables
// Create Global Variable to hold CartoDB points
var cartoDBPoints = null;
// Write SQL Selection Query to be Used on CartoDB Table
// Name of table is 'data_collector'
var sqlQuery = "SELECT * FROM data_collector";
// Create variable for Leaflet.draw features
var drawnItems = new L.FeatureGroup();
// Get CartoDB selection as GeoJSON and Add to Map
function getGeoJSON(){
$.getJSON("https://mjfoster83.cartodb.com/api/v2/sql?format=GeoJSON&q="+sqlQuery, function(data) {
cartoDBPoints = L.geoJson(data,{
pointToLayer: function(feature,latlng){
var marker = L.marker(latlng);
marker.bindPopup('<p>' + feature.properties.description + '<br /><em>Submitted by </em>' + feature.properties.name + '</p>');
return marker;
}
}).addTo(map);
});
};
// Run showAll function automatically when document loads
$( document ).ready(function() {
getGeoJSON();
});
var drawControl = new L.Control.Draw({
draw : {
polygon : false,
polyline : false,
rectangle : false,
circle : false
},
edit : false,
remove: false
});
var controlOnMap = false;
map.on('draw:created', function (e) {
var type = e.layerType,
layer = e.layer;
map.addLayer(drawnItems);
drawnItems.addLayer(layer);
dialog.dialog( "open" );
});
function startEdits(){
if(controlOnMap == true){
map.removeControl(drawControl);
controlOnMap = false;
}
map.addControl(drawControl);
controlOnMap = true;
};
function stopEdits(){
map.removeControl(drawControl);
controlOnMap = false;
refreshLayer();
};
var submitToProxy = function(q){
$.post("/callProxy.php", {
qurl:q,
cache: false,
timeStamp: new Date().getTime()
}, function(data) {
console.log(data);
refreshLayer();
});
};
dialog = $( "#dialog" ).dialog({
autoOpen: false,
height: 300,
width: 350,
modal: true,
position: {
my: "center center",
at: "center center",
of: "#map"
},
buttons: {
"Add to Database": setData,
Cancel: function() {
dialog.dialog( "close" );
map.removeLayer(drawnItems);
}
},
close: function() {
form[ 0 ].reset();
console.log("Dialog closed");
}
});
form = dialog.find( "form" ).on( "submit", function( event ) {
event.preventDefault();
});
function setData() {
var enteredUsername = username.value;
var enteredDescription = description.value;
drawnItems.eachLayer(function (layer) {
var sql = "INSERT INTO data_collector (the_geom, description, name, latitude, longitude) VALUES (ST_SetSRID(ST_GeomFromGeoJSON('";
var a = layer.getLatLng();
console.log(a);
var sql2 ='{"type":"Point","coordinates":[' + a.lng + "," + a.lat + "]}'),4326),'" + enteredDescription + "','" + enteredUsername + "','" + a.lat + "','" + a.lng +"')";
var pURL = sql+sql2;
console.log(pURL);
submitToProxy(pURL);
console.log("Feature has been submitted to the Proxy");
});
map.removeLayer(drawnItems);
drawnItems = new L.FeatureGroup();
console.log("drawnItems has been cleared");
dialog.dialog("close");
};
function refreshLayer() {
if (map.hasLayer(cartoDBPoints)) {
map.removeLayer(cartoDBPoints);
};
getGeoJSON();
};
</script>
</body>
</html>
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