我构建了一个自定义谷歌地图php文件,以实现到我的drupal网站的首页,该网站同时使用javascript和php,并通过template.php文件中的drupal_add_js
进行调用。我很难弄清楚如何在javascript中正确运行PHP,然后将结果设置为JavaScript变量markers
。我试图将每个结果推送到一个数组并通过json_encode($item);
回显数组但是,在我的控制台中,我收到的错误是Cannot read property 'lat' of undefined
。
这是我的整个map.php:
var map = null;
var infowindow = new google.maps.InfoWindow();
var markers = [Drupal.settings.markers];
window.onload = function () {
var mapOptions = {
center: new google.maps.LatLng(
parseFloat(markers[0].lat),
parseFloat(markers[0].lng)),
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var path = new google.maps.MVCArray();
var service = new google.maps.DirectionsService();
var infoWindow = new google.maps.InfoWindow();
var map = new google.maps.Map(document.getElementById("map"), mapOptions);
var poly = new google.maps.Polyline({map: map, strokeColor: '#F3443C'});
var lat_lng = new Array();
for (i = 0; i < markers.length; i++) {
var data = markers[i]
var myLatlng = new google.maps.LatLng(data.lat, data.lng);
lat_lng.push(myLatlng);
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: data.title
});
(function (marker, data) {
google.maps.event.addListener(marker, "click", function (e) {
infoWindow.setContent(data.description);
infoWindow.open(map, marker);
});
})(marker, data);
}
for (var i = 0; i < markers.length; i++) {
if ((i + 1) < markers.length) {
var src = new google.maps.LatLng(parseFloat(markers[i].lat),
parseFloat(markers[i].lng));
var des = new google.maps.LatLng(parseFloat(markers[i+1].lat),
parseFloat(markers[i+1].lng));
service.route({
origin: src,
destination: des,
travelMode: google.maps.DirectionsTravelMode.DRIVING
}, function (result, status) {
if (status == google.maps.DirectionsStatus.OK) {
for (var i = 0, len = result.routes[0].overview_path.length; i < len; i++) {
path.push(result.routes[0].overview_path[i]);
}
poly.setPath(path);
}
});
}
}
}
这是我的页面 - front.tpl.php,我试图创建可以访问我的js文件的数组:
<?php
if (isset($_GET['routeselected']))
{
$result = mysqli_query($db, "SELECT * FROM STOP INNER JOIN RouteStop ON Stop.Stop_ID = RouteStop.Stop_ID WHERE RouteStop.Route_ID = " . (int)$_GET['routeselected'] . " AND RouteStop.Company_ID = " . (int)$_GET['companyselected']);
$markers = array();
while (($row = mysqli_fetch_array($result))){
$markers[$row['title']] = array($row['Stop_ID']);
$markers[$row['lat']] = array($row['Latitude']);
$markers[$row['lng']] = array($row['Longitude']);
$markers[$row['description']] = array($row['StopName']);
}
drupal_json_encode($markers);
drupal_add_js(array('markers' => drupal_json_encode($markers)), 'setting');
}
?>
有没有人可能知道我的问题的解决方案?谢谢大家和任何帮助!
答案 0 :(得分:2)
在javascript文件中编写内联PHP代码确实是一个坏主意。
解决方案是:
drupal_json_encode($markers)
Drupal.settings.markers
drupal_add_js(array('markers' => drupal_json_encode($markers)), 'setting');
var markers = Drupal.settings.markers
有关详细信息,请查看此文章:https://drupal.org/node/756722#settings-javascript