我无法查询从geojson源导入并显示在地图框地图上的嵌套属性功能。
我可以通过点击监听器获得该功能,但是一旦属性被嵌套,该对象就会被表示为字符串
{
...
properties: {
address: "{"place":"Bern","street":"Fischerweg","street_nr":"11","zip":"3012"}"
price: 4500
}
}
因此,单击后,我只能在弹出窗口中显示未嵌套的属性。
我的代码:
const features = this.queryRenderedFeatures(e.point, {
layers: ['unclustered-point']
});
console.log(feature.properties.price) --> 4500
console.log(feature.properties.address) --> string instead of object {"place":"Bern","street":"Fischerweg","street_nr":"11","zip":"3012"}
console.log(feature.properties.address.street) --> undefined (--> NOT WORKING because of nested property)
const popup = new mapboxgl.Popup({offset: [0, -15]})
.setLngLat(feature.geometry.coordinates)
.setHTML('<h3>Price: ' + feature.properties.price + '</h3>
<p>Street: ' + feature.properties.address.street + '</p>')--> NOT WORKING because of nested property
.setLngLat(feature.geometry.coordinates)
.addTo(map);
我读到您可以使用表达式访问嵌套属性,但是如何将表达式应用于弹出窗口的html? 有什么方法可以访问嵌套属性,还是必须重新设计geojson的结构?
我们非常感谢您的帮助!非常感谢你,
关于西蒙
答案 0 :(得分:0)
由于属性值已转换为JSON字符串,因此需要反向转换:
Object.keys(feature.properties).forEach(function(key) {
feature.properties[key] = JSON.parse(feature.properties[key]);
});