我使用角度6的反应形式制作了一个包含电子邮件用户名和头像等字段的表单。我知道我需要表格数据来上传图像,但是我不知道如何将其与角度6的反应形式一起使用。帮助吗?
答案 0 :(得分:4)
尝试一下:
<form [formGroup]="yourForm" (ngSubmit)="onSubmit()">
<input type="text" formControlName="email"> <br>
<input (change)="uploadDocument($event)" type="file" accept=".png, .pdf, .jpg, .jpeg"> <br>
<input (change)="onSubmit()" type="submit" value="Send file">
</form>
在您的app.component.html
中,然后:
import { Component } from '@angular/core';
import { FormBuilder, FormGroup } from '@angular/forms';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'my-app',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
yourForm: FormGroup;
constructor(private fb: FormBuilder, private http: HttpClient) {
this.yourForm = this.fb.group({
email: [''],
file: ['']
});
}
uploadDocument(event: any) {
if (event.target.files && event.target.files[0]) {
const reader = new FileReader();
reader.onload = () => {
this.yourForm.get('file').setValue(event.target.files[0]);
};
reader.readAsDataURL(event.target.files[0]);
}
}
onSubmit(): void {
const uploadData = new FormData();
uploadData.append('email', this.yourForm.get('email').value);
uploadData.append('file', this.yourForm.get('file').value);
this.http.post('your-route', uploadData);
}
}
在您的app.component.ts
中,并且:
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { HelloComponent } from './hello.component';
import { HttpClientModule } from '@angular/common/http';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
@NgModule({
imports: [
BrowserModule,
FormsModule,
HttpClientModule,
FormsModule,
ReactiveFormsModule
],
declarations: [AppComponent, HelloComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
您的app.module.ts
文件中的。
另外,请不要忘记在this.http.post('your-route', uploadData);
行中配置路由。