GoogleMaps v3 autocomplete.getBounds() 设置后返回 undefined

Question

我在尝试将 Google 地图自动完成的结果偏向于放置在地图上的最后一个图钉时遇到了问题。我在这里关注谷歌的教程： https://developers.google.com/maps/documentation/javascript/places-autocomplete#change_search_area

我的 CoffeeScript 代码如下：

initSearch = ->
  autocomplete = new (google.maps.places.Autocomplete)(document.getElementById('location-query'), types: [ 'geocode' ])
  autocomplete.addListener 'place_changed', ->
    place = autocomplete.getPlace()
    addDestination(place, map, insertIndex) #places pin on map

    console.log 'autocomplete bounds (before): ' + autocomplete.getBounds()
    #setting bounds around new place
    biasCircle = new google.maps.Circle
      center: place.geometry.location
      radius: 500 #in kilometers

    autocomplete.setBounds(biasCircle.getBounds())
    console.log 'autocomplete bounds (after): ' + autocomplete.getBounds()

编译成以下javascript：

initSearch = function() {
    var autocomplete;
    autocomplete = new google.maps.places.Autocomplete(document.getElementById('location-query'), {
      types: ['geocode']
    });
    return autocomplete.addListener('place_changed', function() {
      var biasCircle;
      place = autocomplete.getPlace();
      addDestination(place, map, insertIndex);

      console.log('autocomplete bounds (before): ' + autocomplete.getBounds());
      biasCircle = new google.maps.Circle({
        center: place.geometry.location,
        radius: 500
      });
      autocomplete.setBounds(biasCircle.getBounds());
      return console.log('autocomplete bounds (after): ' + autocomplete.getBounds());
    });
  };

图钉正确放置在地图上，但无论我添加多少地方，console.logs 总是返回：

autocomplete bounds (before): undefined
autocomplete bounds (after): ((9.923577823579402, -84.09528446042509), (9.932560976420598, -84.08616473957488))

边界设置正确（如第二个console.log 所示），但结果实际上并没有偏差，第一个总是导致未定义。

我们用来测试结果是否有偏差的测试用例是： 1. 在自动完成中输入“San Jose”（最好的结果应该在美国） 2. 在地图上添加“利蒙，哥斯达黎加”作为标记 3. 在自动完成中输入“San Jose”，最上面的结果应该是 San Jose, COSTA RICA

我们认为这可能是范围界定的问题，所以我们在各处尝试了window.autocomplete，但仍然遇到同样的问题。我们还尝试在单独的方法中设置自动完成边界（而不是 place_changed 事件，但这也不起作用）。

提前感谢您的帮助！

更新：尝试 Cedric 的答案 根据 Cedric 的建议，我试图在侦听器回调之外设置边界（从侦听器内部调用方法），但我仍然遇到同样的问题。新代码：

#Sets autocomplete bias
setAutocompleteBias = (place) ->
  console.log 'autocomplete bounds (before): ' + window.autocomplete.getBounds()
  #setting bounds around new place
  biasCircle = new google.maps.Circle
    center: place.geometry.location
    radius: 500 #in kilometers

  window.autocomplete.setBounds(biasCircle.getBounds())
  console.log 'autocomplete bounds (after): ' + window.autocomplete.getBounds()

window.autocomplete = null
#Autocomplete search box initialization
initSearch = ->
  window.autocomplete = new (google.maps.places.Autocomplete)(document.getElementById('location-query'), types: [ 'geocode' ])
  #autocomplete.bindTo('bounds', map)
  window.autocomplete.addListener 'place_changed', ->
    place = window.autocomplete.getPlace()

    addDestination(place, map, insertIndex)

    setAutocompleteBias(place)

Answer 1

您的自动完成功能似乎缺少地图所需的边界初始化

initSearch = ->
  autocomplete = new (google.maps.places.Autocomplete(                  
    document.getElementById('location-query'), types: [ 'geocode' ])
  autocomplete.bindTo('bounds', map)
  autocomplete.addListener 'place_changed', ->
    place = autocomplete.getPlace()
    addDestination(place, map, insertIndex) #places pin on map

    console.log 'autocomplete bounds (before): ' + autocomplete.getBounds()
    #setting bounds around new place
    biasCircle = new google.maps.Circle
      center: place.geometry.location
      radius: 500 #in kilometers
    autocomplete.setBounds(biasCircle.getBounds())
    console.log 'autocomplete bounds (after): ' + autocomplete.getBounds()

或通过特定位置

var defaultBounds = new google.maps.LatLngBounds(
  new google.maps.LatLng(-33.8902, 151.1759),
  new google.maps.LatLng(-33.8474, 151.2631));

var input = document.getElementById('searchTextField');
var options = {
  bounds: defaultBounds,
  types: ['establishment']
};
autocomplete = new google.maps.places.Autocomplete(input, options);

您的教程链接https://developers.google.com/maps/documentation/javascript/places-autocomplete#add_autocomplete

来自文档https://developers.google.com/maps/documentation/javascript/examples/places-autocomplete的链接