我正在尝试将数据附加到我的模板
@Injectable()
export class GetAllList {
str = localStorage.getItem('social');
loc = JSON.parse(this.str);
id = this.loc.profile_id;
private _productUrl = 'http://localhost/a2server/index.php/profile/editProfile/' + this.id;
constructor(private _http: Http) { }
getList(): Observable<IDetails[]> {
return this._http.get(this._productUrl)
.map((response: Response) => {
return <IDetails[]>response.json().data[0];
});
}
}
我订阅如下,
this._profileservice.getList()
.subscribe(details => this.details = details);console.log(this.details);
我的模板,
<div class="nopadding col-sm-12">
<div class="col-sm-12 nopadding profile">
<div class="col-sm-12 formpaddingcss">
<h3 class="headingfontcss">MY PROFILE</h3>
</div>
<form [formGroup]="form" (ngSubmit)="onSubmit(form.value)" class="nobottommargin col-sm-12 formpaddingcss" name="template-contactform"
novalidate="novalidate">
<div class="form-process"></div>
<div class="col_half">
<label for="template-contactform-name">First Name <small>*</small></label>
<div class="input-group divcenter">
<span class="input-group-addon noradius"><i class="icon-user iconcolorcss"></i></span>
<input type="email" tooltip="Enter Firstname" [tooltipDisabled]="false" [tooltipAnimation]="true"
tooltipPlacement="top" name="widget-subscribe-form-email" class="form-control required email formcontrolheight"
[formControl]="form.controls['firstname']" [(ngModel)]="details.firstname" placeholder="First Name" required>
</div>
</div>
</form>
来自后端的数据,
[{profile_id: "1", firstname: "Sachin", lastname: "Tendulkar", profilename: "sachin tendulkar",…}]
我的错误是
TypeError: Cannot read property 'firstname' of undefined
我一直在尝试但没有结果,有人可以解释我的问题
答案 0 :(得分:2)
Angular尝试在_http.get
的响应到来之前绑定您的表单。
使用
<form *ngIf="details" [formGroup]
延迟呈现表单直到数据到达。
通常安全导航操作员details?.firstname
非常方便,但目前不能用于双向绑定
支持
[(ngModel)]="details?.firstname"
将其更改为
[ngModel]="details?.firstname" (ngModelChange)="details.firstname = $event"
会让它发挥作用,但我认为在你的情况下,第一个建议是更合适。