Google Map API 加载动态信息窗口

Question

我有谷歌地图从我的数据库中动态加载地图上的位置。问题是它没有显示每个位置正确的显示信息。它仅在所有标记上显示上一个产品的信息。我需要以某种方式遍历每个标记。我的代码如下：

<section class="content jumbotron jumbotron-full-height">
    <div class="item slide-1">
        <div id="home-map"></div>
    </div>
</section>

<script>
    var map;
    function initMap() {

        map = new google.maps.Map(document.getElementById('home-map'), {
            center: {lat: 52.1326, lng: 5.2913},
            zoom: 6,
            mapTypeId: 'roadmap',
            styles: [
                {
                    featureType: 'all',
                    stylers: [
                        { saturation: 0 }
                    ]
                },{
                    featureType: 'road.arterial',
                    elementType: 'geometry',
                    stylers: [
                        { hue: '#00ffee' },
                        { saturation: 0 }
                    ]
                },{
                    featureType: 'poi.business',
                    elementType: 'labels',
                    stylers: [
                        { visibility: 'off' }
                    ]
                },{
                    featureType: 'road',
                    elementType: 'labels',
                    stylers: [
                        { visibility: 'on' }
                    ]
                }
            ]
        });

        {% for product in products %}
            var contentString = '<div class="info-window">'+
                                    '<div id="siteNotice">'+
                                    '</div>'+
                                    '<div id="window-content">'+
                                        '{% set path = product.image is not null ? product.image.path|imagine_filter(filter|default('sylius_shop_map_thumbnail')) : 'http://placehold.it/200x200' %}'+
                                        '<img src="{{ path }}" />'+
                                        '<h1>{{ product.code }}</h1>'+
                                    '</div>'+
                                    '<h2>{{ product.city }} - {{ product.country }}</h2>'+
                                    '<p><strong> Description: </strong>{{  product.shortDescription }}</p>'+
                                    '<p><strong> Price: </strong>from {{ product.price|sylius_price }} a day.</p>'+
                                    '<a class="btn btn-primary" href="{{ path("sylius_shop_product_show", {"slug": product.slug}) }}">more info</a>'+
                                '</div>';

            var infowindow = new google.maps.InfoWindow({
                content: contentString,
                maxWidth: 600
            });

            var marker = new google.maps.Marker({
                position: {lat: {{ product.latitude }}, lng: {{ product.longitude }}},
                map: map,
                title: '{{ product.city }}',
                label: '{{ product.address }}'
            });
            marker.addListener('click', function() {
                infowindow.open(map, marker);
            });
        {% endfor %}
    }
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyC1c34AXAQ5Y3yV43Alj_ieMRaDPb0qZ44&callback=initMap" async defer>
</script>

Answer 1

问题是您没有动态设置其内容。为此，您必须从另一个函数创建标记

  <section class="content jumbotron jumbotron-full-height">
        <div class="item slide-1">
            <div id="home-map"></div>
        </div>
    </section>

    <script>
        var map,infowindow;
        function initMap() {

            map = new google.maps.Map(document.getElementById('home-map'), {
                center: {lat: 52.1326, lng: 5.2913},
                zoom: 6,
                mapTypeId: 'roadmap',
                styles: [
                    {
                        featureType: 'all',
                        stylers: [
                            { saturation: 0 }
                        ]
                    },{
                        featureType: 'road.arterial',
                        elementType: 'geometry',
                        stylers: [
                            { hue: '#00ffee' },
                            { saturation: 0 }
                        ]
                    },{
                        featureType: 'poi.business',
                        elementType: 'labels',
                        stylers: [
                            { visibility: 'off' }
                        ]
                    },{
                        featureType: 'road',
                        elementType: 'labels',
                        stylers: [
                            { visibility: 'on' }
                        ]
                    }
                ]
            });

             infowindow = new google.maps.InfoWindow({
                    maxWidth: 600
                });

            {% for product in products %}
                createMarker(product )
            {% endfor %}
        }

       function createMarker(product){

        var contentString = '<div class="info-window">'+
                                        '<div id="siteNotice">'+
                                        '</div>'+
                                        '<div id="window-content">'+
                                            '{% set path = product.image is not null ? product.image.path|imagine_filter(filter|default('sylius_shop_map_thumbnail')) : 'http://placehold.it/200x200' %}'+
                                            '<img src="{{ path }}" />'+
                                            '<h1>{{ product.code }}</h1>'+
                                        '</div>'+
                                        '<h2>{{ product.city }} - {{ product.country }}</h2>'+
                                        '<p><strong> Description: </strong>{{  product.shortDescription }}</p>'+
                                        '<p><strong> Price: </strong>from {{ product.price|sylius_price }} a day.</p>'+
                                        '<a class="btn btn-primary" href="{{ path("sylius_shop_product_show", {"slug": product.slug}) }}">more info</a>'+
                                    '</div>';


                var marker = new google.maps.Marker({
                    position: {lat: {{ product.latitude }}, lng: {{ product.longitude }}},
                    map: map,
                    title: '{{ product.city }}',
                    label: '{{ product.address }}'
                });
                marker.addListener('click', function() {
                    infowindow.setContent(contentString);
                    infowindow.open(map, marker);
                });
       }


    </script>
    <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyC1c34AXAQ5Y3yV43Alj_ieMRaDPb0qZ44&callback=initMap" async defer>
    </script>

务必将 infowindow 声明为全局变量