[英]How to pass a response from service to component?
我試圖將響應從我的服務傳遞到組件,以便可以在html頁上顯示它,但我不知道如何。
組件
uploadFile(): void {
this.errors = null;
let file = this.fileInput.nativeElement;
if (file.files && file.files[0]) {
let fileToUpload = file.files[0];
this.getInfoService
.uploadImage(fileToUpload)
.subscribe(
response => { console.log(response) },
err => {
//this.errors = err._body
this.errors = err.json().image
console.log("ERR", err.json().image)
},
() => console.log("()",'worked')
);
}
}
編輯:問題是在我的服務。 這是工作代碼。
uploadImage(fileToUpload: any) : Observable<any> {
let input = new FormData();
input.append("image", fileToUpload);
return this.http.post('http://Api.app/api/v1/upload', input)
.map(
(response: Response) => {
// I was missing this part
response.json()
}
);
}
在組件上創建幾個屬性,然后將響應數據分配給這些屬性。
image: any;
message: string;
uploadFile(): void {
this.errors = null;
let file = this.fileInput.nativeElement;
if (file.files && file.files[0]) {
let fileToUpload = file.files[0];
this.getInfoService
.uploadImage(fileToUpload)
.subscribe(
response => {
this.image = response.image;
this.message = response.message;
},
err => {
//this.errors = err._body
this.errors = err.json().image
console.log("ERR", err.json().image)
},
() => console.log("()",'worked')
);
}
}
要在您的視圖中顯示消息:
{{ message }}
要顯示嵌入式圖像,您需要查看以下文章:
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