为什么我的谷歌地图Lat / Lng变量不存储任何东西?

时间:2018-05-04 18:29:01

标签: javascript php html mysql sql

我目前正在为大学制作一个项目,并且我试图在我的网站上实施谷歌地图

ReportStolenBike.js:

    var mapCenter = new google.maps.LatLng(51.8979988098144,-2.0838599205017);
var geocoder = new google.maps.Geocoder();
var infowindow = new google.maps.InfoWindow();
var myMap;
var marker;


function initialize(){
    var mapOptions = {
        zoom: 15,
        center: mapCenter
    };

    myMap = new google.maps.Map(document.getElementById("mapInput"), mapOptions);

    marker = new google.maps.Marker({
        map: myMap,
        position: mapCenter,
        draggable: true 
    });     

    function markerDragged() {
        var selectedPos = {'latLng': marker.getPosition()};
        geocoder.geocode(selectedPos, showAddressInInfoWindow);
    }        

    google.maps.event.addListener(marker, 'dragend', markerDragged);


    function showAddressInInfoWindow(results) {
        if (results[0]) {
            infowindow.setContent(results[0].formatted_address);
            infowindow.open(myMap, marker);
        }
    }         
}

google.maps.event.addDomListener(window, 'load', initialize);

$('#formReportStolen').on('submit', function(e) {
    var formData = new FormData(this);
    var lat = marker.getPosition().lat();
    var lng = marker.getPosition().lng();

    formData.append("lat", lat);
    formData.append("lng", lng);

    e.preventDefault();
    $.ajax({
        url: "PublicReportStolenDAO",
        method : "POST",
        data: formData,
        contentType: false,
        cache: false,
        processData: false,
        success:function(echoedMsg) {
            if (echoedMsg == "True") {
                alert("Successfully reported.");
            }
        }
    });
});

因此,在那个java脚本类中,我显示了我的谷歌地图,并尝试将用户当前的位置。我的地图有一个弹出窗口,显示我的地图确实引用了纬度和经度,但是当我试图将它们存储到我的sql数据库时,没有任何东西存储。

PublicReportStolenDAO.php

  <?php
function StolenReg(){

    $bikeID = $_POST['txtBikeID'];
    $date = $_POST['txtDateofTheft'];
    $lat = $_POST['lat'];
    $lng = $_POST['lng'];

    include "../../include/config.php";

        $verifyFuncBike = "SELECT email FROM `tbl_user` WHERE email = '$email'";
        $resultBike = mysqli_query($connection,$verifyFuncBike);
        $rowBike = mysqli_fetch_array($resultBike,MYSQLI_ASSOC);
        $countBike = mysqli_num_rows($resultBike);

        if($countBike == 1) {

            $sql = "INSERT INTO `tbl_stolen`(BikeID, Date, Lat, Lng)".
            " VALUES ".
            "('$bikeID', '$date', '$lat', '$lng')";

            if(mysqli_query($connection, $sql)) {
            echo "Report successfully sent, please return back to the site.";
                echo $lat;
                echo $lng;
            } else {
                echo mysqli_error($connection);
            }

        }else {

            echo "Error, please return back to the site and try again.";
        }



        mysqli_close($connection);
    } 

stolenReg();

?>

对于可能很糟糕的代码感到抱歉,我对Web开发非常陌生

1 个答案:

答案 0 :(得分:0)

我不认为这是最好的答案。但在你的代码中使用

var lat = marker.getPosition().lat();

这不是获得坐标的功能。获得你需要地理定位的坐标。所以它应该是

var lat = position.coords.latitude
var lat = position.coords.longitude

为了确保您的位置,您可以使用此

if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
    var lat = position.coords.latitude
    var lat = position.coords.longitude
    $.ajax({
        do your ajax
    });      
});
}
抱歉我的不好意思。希望这对你有帮助。