Angular Google Places Autocomplete+;角2
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(响应总是空的?!) 作为概念证明,我创建了最简单的代码片段作为参考:Angular Google Places Autocomplete+;角2,angular,google-places-api,Angular,Google Places Api,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(响应总是空的?!) 作为概念证明,我创建了最简单的代码片段作为参考: <!DOCTYPE html> <html> <head> <script src="https://maps.googleapis.com/maps/api/js?key=[MY_API_KEY]&libraries=places&qu
<!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>
去
var autocomplete=null;
函数go(){
autocomplete=new google.maps.places.autocomplete(
(document.getElementById('autocomplete')){
类型:['geocode']
});
}
上面的代码有效-我可以在点击Go按钮后得到预测
现在,Angular2场景:
My_Layout.cshtml文件的标题部分具有以下标记:
<script src="https://maps.googleapis.com/maps/api/js?key=[MY_API_KEY]&libraries=places" async defer></script>
我的指示:
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'] });
}
}
从'@angular/core'导入{Directive,ElementRef,Input};
声明:任何;
@指令({选择器:'[googleplaces]'})
导出类GooglePlacesDirective{
自动完成:任何;
构造函数(专用el:ElementRef){
}
ngAfterContentInit(){
this.autocomplete=new google.maps.places.autocomplete(
(此为国家元素),
{类型:['geocode','cities']});
}
}
和简单的角度分量:
<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>
.
.
.
位置
场景2(角度)不起作用。事实:
- 自动完成已初始化(它具有所有预期的属性/方法,占位符为“输入位置”,等等)
- “自动完成”不会为键入的搜索字符串返回任何预测(它只返回“/**/xdc.\u le3zv3&&xdc.\u le3zv3([4]))
从“@angular/core”导入{指令,ElementRef,EventEmitter,Output};
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);
}
}
从'@angular/forms'导入{NgModel};
声明:任何;
@指示({
选择器:“[Googleplace]”,
提供者:[NgModel],
主持人:{
'(输入)''onInputChange()'
}
})
导出类GoogleplaceDirective{
@Output()setAddress:EventEmitter=neweventEmitter();
模型值:任意;
自动完成:任何;
私有:HTMLElement;
构造函数(el:ElementRef,私有模型:NgModel){
这一点。_el=el.nativeElement;
this.modelValue=this.model;
var输入=此值;
this.autocomplete=new google.maps.places.autocomplete(输入,{});
google.maps.event.addListener(this.autocomplete,'place\u changed',()=>{
var place=this.autocomplete.getPlace();
本.调用事件(地点);
});
}
invokeEvent(位置:Object){
this.setAddress.emit(place);
}
onInputChange(){
log(this.model);
}
}
使用
<input type="text" class="form-control" placeholder="Location" name="Location" [(ngModel)]="address" #LocationCtrl="ngModel"
Googleplace (setAddress)="getAddressOnChange($event,LocationCtrl)">
@Habeeb的答案是一个很好的开始,但这是一个更干净的实现。首先安装googlemaps typings
npm安装——保存dev@types/googlemaps
,并将它们从“@types/googlemaps”导入到应用程序中的某个位置
import { Directive, ElementRef, EventEmitter, OnInit, Output } from '@angular/core';
@Directive({
// xx is your app's prefix
selector: '[xxPlaceLookup]'
})
export class PlaceLookupDirective implements OnInit {
@Output() onSelect: EventEmitter<any> = new EventEmitter();
private element: HTMLInputElement;
constructor(el: ElementRef) {
this.element = el.nativeElement;
}
ngOnInit() {
const autocomplete = new google.maps.places.Autocomplete(this.element, {
types: ['establishment'],
componentRestrictions: {country: 'us'}
});
google.maps.event.addListener(autocomplete, 'place_changed', () => {
const place = autocomplete.getPlace();
this.onSelect.emit(place);
});
}
}
import{Directive,ElementRef,EventEmitter,OnInit,Output}来自“@angular/core”;
@指示({
//xx是你的应用的前缀
选择器:“[xxPlaceLookup]”
})
导出类PlaceLookupDirective实现OnInit{
@Output()onSelect:EventEmitter=neweventemitter();
私有元素:HTMLInputElement;
构造函数(el:ElementRef){
this.element=el.nativeElement;
}
恩戈尼尼特(){
const autocomplete=new google.maps.places.autocomplete(this.element{
类型:[“机构”],
组件限制:{国家:'us'}
});
google.maps.event.addListener(自动完成,'place\u changed',()=>{
const place=autocomplete.getPlace();
this.onSelect.emit(place);
});
}
}
完美!非常感谢@Habeeb!如果你得到了预期的结果。请记为正确答案。嗨,哈比,我是新来的。。我试图在我的页面中添加一个自动完成功能…当我搜索解决方案时,我发现了这篇文章。当“this.autocomplete=new google.maps.places.autocomplete(input,{}”);这一行到达时,我得到了一个类似“InvalidValueError:不是HTMLInputElement的实例”的错误…你能帮我找出这个错误吗?@Girija你在代码中添加了吗?我必须将调用包装到this.setAddress.emit(place)在构造函数中的NgZone.run()
:构造函数(私有区域:NgZone,…)
,然后在事件侦听器中的this.zone.run(()=>{this.setAddress.emit(place);})
。没有它,一些模型到UI视图的同步就不会立即触发Cycleaner实现在构造函数中的NgZone.run()
:构造函数(私有区域:NgZone,…)
,然后在事件侦听器中的this.zone.run(()=>{this.setAddress.emit(place);})
。没有它,一些从模型到用户界面的视图同步就不会立即触发。你说的应用程序中的某个地方是什么意思?