Google地方信息自动填充+ Angular2 [英] Google Places Autocomplete + Angular2
问题描述
我正在构建一个简单的Google Places Autocomplete Angular2指令，但问题是无法获得任何预测(响应始终为空?！)...
I am building a simple Google Places Autocomplete Angular2 directive but the problem is that cannot get any prediction (the response is always empty?!)...
作为概念验证，我创建了最简单的代码段作为参考:
As a proof of concept I created the simplest possible code snippet as a reference:
<!DOCTYPE html>
<html>
<head>
<script src="https://maps.googleapis.com/maps/api/js?key=[MY_API_KEY]&libraries=places" async defer></script>
</head>
<body>
<button type="button" onclick="go()">go</button>
<input id="autocomplete" type="text"></input>
<script>
var autocomplete = null;
function go() {
autocomplete = new google.maps.places.Autocomplete(
(document.getElementById('autocomplete')), {
types: ['geocode']
});
}
</script>
</body>
</html>
上面的代码有效-单击运行"按钮后，我可以得到预测.
The above code works - I can get predictions after clicking Go button.
现在，Angular2场景:
Now, Angular2 scenario:
我的_Layout.cshtml文件的头部具有以下标记:
My _Layout.cshtml file has the following tag in head section:
<script src="https://maps.googleapis.com/maps/api/js?key=[MY_API_KEY]&libraries=places" async defer></script>
我的指令:
import { Directive, ElementRef, Input } from '@angular/core';
declare var google: any;
@Directive({ selector: '[googleplaces]' })
export class GooglePlacesDirective {
autocomplete: any;
constructor(private el: ElementRef) {
}
ngAfterContentInit() {
this.autocomplete = new google.maps.places.Autocomplete(
(this.el.nativeElement),
{ types: ['geocode', 'cities'] });
}
}
简单的Angular组件:
And simple Angular component:
<form [formGroup]="companyForm">
.
.
.
<div class="form-group">
<label for="Location">Location</label>
<input type="text"
class="form-control"
id="Location"
fromControlName="Location"
googleplaces>
</div>
</form>
方案2(角度)不起作用.事实:
The Scenario 2 (angular) doesn't work. The facts:
- 初始化自动完成功能(它具有所有预期的属性/方法，占位符是输入位置"，等等...)
- 自动完成功能不返回任何类型化搜索字符串的预测(它仅返回"/**/ xdc ._ le3zv3&& xdc ._ le3zv3([ 4])")
- autocomplete is initialized (it has all expected properties/methods, placeholder is "Enter a location", etc...)
- autocomplete doesn't return any prediction for typed search string (it returns only "/**/xdc._le3zv3 && xdc._le3zv3( [4] )")
此外，Google API控制台会说一切都应该保持原样?！这是屏幕截图:
Also, Google API Console says everything is as it should be?! Here is the screenshot:
这里可能有什么问题?谢谢...
What can be in question here? Thanks...
推荐答案
import {Directive, ElementRef, EventEmitter, Output} from '@angular/core';
import {NgModel} from '@angular/forms';
declare var google:any;
@Directive({
selector: '[Googleplace]',
providers: [NgModel],
host: {
'(input)' : 'onInputChange()'
}
})
export class GoogleplaceDirective {
@Output() setAddress: EventEmitter<any> = new EventEmitter();
modelValue:any;
autocomplete:any;
private _el:HTMLElement;
constructor(el: ElementRef,private model:NgModel) {
this._el = el.nativeElement;
this.modelValue = this.model;
var input = this._el;
this.autocomplete = new google.maps.places.Autocomplete(input, {});
google.maps.event.addListener(this.autocomplete, 'place_changed', ()=> {
var place = this.autocomplete.getPlace();
this.invokeEvent(place);
});
}
invokeEvent(place:Object) {
this.setAddress.emit(place);
}
onInputChange() {
console.log(this.model);
}
}
要使用
<input type="text" class="form-control" placeholder="Location" name="Location" [(ngModel)]="address" #LocationCtrl="ngModel"
Googleplace (setAddress)="getAddressOnChange($event,LocationCtrl)">
这篇关于Google地方信息自动填充+ Angular2的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
