我有一个简单的申请表,我想将其发布到服务器。我是 Angular2 的新手
如何将数据从组件传递到服务并传递到服务器以进行 POST 请求。
当我直接从 FireFox 插件“httpRequester”尝试时,POST 工作正常
这是 TaskComponent.ts
@Component({
selector: 'tasks',
template: `<div mdl class="mdl-grid demo-content">
<div class="demo-graphs mdl-shadow--2dp mdl-color--white mdl-cell mdl-cell--8-col">
<h3>Create Task Page</h3>
<form action="#" (ngSubmit)="onSubmit()">
<div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
<input class="mdl-textfield__input" type="text" pattern="[A-Z,a-z]*" id="taskname" [(ngModel)]="data.taskname"/>
<label class="mdl-textfield__label" for="taskname">Task Name</label>
<span class="mdl-textfield__error">Only alphabet and no spaces, please!</span>
</div>
<button class="mdl-button mdl-js-button mdl-button--raised mdl-button--colored" type="submit">Create Task</button>
</form>
`,
directives: [ROUTER_DIRECTIVES, MDL]
})
export class CreateTaskComponent {
data: any
constructor() {
this.data = {
//taskname: 'Example Task'
};
}
onSubmit(form) {
console.log(this.data.taskname); <--Data is passed upon submit onto the console. Works fine.
//Need to call the postApartment method of ApartmentService
}
}
公寓服务.ts
import {Http, Response} from 'angular2/http'
import {Injectable} from 'angular2/core'
import 'rxjs/add/operator/map';
@Injectable()
export class ApartmentService {
http: Http;
constructor(http: Http) {
this.http = http;
}
getEntries() {
return this.http.get('./api/apartments').map((res: Response) => res.json());
}
getProfile(userEmail :string){
return this.http.get(`./api/apartments/getprofile/${userEmail}`).map((res: Response) => res.json());
}
postApartment(){
// Not familiar with the syntax here
}
}
服务器.ts
router.route('/api/apartments')
.post(function(req, res) {
var apartment = new Apartment();
apartment.name = req.body.name;
apartment.save(function(err) {
if (err)
res.send(err);
res.json({ message: 'Apartment created!' });
});
})
最佳答案
您可以通过依赖注入(inject)来注入(inject)服务并在组件中使用它
export class CreateTaskComponent {
constructor(){private _apartmentService: ApartmentService}{}
}
并且您可以通过以下方式在任何组件函数中访问它
onSubmit(form) {
console.log(this.data.taskname); <--Data is passed upon submit onto the console. Works fine.
//Need to call the postApartment method of ApartmentService
this._apartmentService.postApartment()
}
并且在引导组件时,您必须通过以下方式将其添加为依赖项
bootstrap(AppComponent, [ApartmentService]);
完成最后一步的另一种选择是在组件装饰器中添加提供者,例如
@Component{
providers: [ApartmentService]
}
关于web-services - Angular2 如何使用服务类发布数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37505594/