Upload file with Primeng upload component

Question

I would upload the file in Angular using upload component

Here's my HTML:

<p-fileUpload mode="basic" name="demo[]" customUpload="true" accept="image/*" maxFileSize="1000000"  (uploadHandler)="upload($event)"></p-fileUpload>

in my ts I print param value

upload(event) {
  console.log(event)
}

I get only metadata and not blob content

{"files":[{"objectURL":{"changingThisBreaksApplicationSecurity":"blob:https://prime-ng-file-uploading.stackblitz.io/d429e761-c391-45fa-8628-39b603e25225"}}]}

I would also get file content to send via API to the server

Here's a stackblitz demo

Solution

In the official documentation you have an example:

export class FileUploadDemo {
  uploadedFiles: any[] = [];
  constructor(private messageService: MessageService) {}
  onUpload(event) {
    for (let file of event.files) {
      this.uploadedFiles.push(file);
    }
    this.messageService.add({
      severity: 'info',
      summary: 'File Uploaded',
      detail: ''
    });
  }
}

When I used primeNG, I did it like this (for uploading only 1 file) :

HTML

 <p-fileUpload name="myfile[]" customUpload="true" multiple="multiple" (uploadHandler)="onUpload($event)" accept="application/pdf"></p-fileUpload>

component.ts

export class AlteracionFormComponent {
  uplo: File;
  constructor(private fileService: FileUploadClientService) {}
  onUpload(event) {
    for (let file of event.files) {
      this.uplo = file;
    }
    this.uploadFileToActivity();
  }
  uploadFileToActivity() {
    this.fileService.postFile(this.uplo).subscribe(data => {
      alert('Success');
    }, error => {
      console.log(error);
    });
  }
}

And my service (in Angular)

service.ts

  postFile(id_alteracion: string, filesToUpload: FileUploadModel[], catalogacion: any): Observable<any> {
    let url = urlAPIAlteraciones + '/';
    url += id_alteracion + '/documentos';

    const formData: FormData = new FormData();

    formData.append('json', JSON.stringify(catalogacion));

    for (let file of filesToUpload) {
      formData.append('documento', file.data, file.data.name);
    }

    console.log(formData);

    let headers = new HttpHeaders();

    return this._http.post(url, formData, { headers: headers });
  }

Hope that helps

Comments

[infodev]

can you add please HTML ?

[Aw3same]

Yes, I added it

[infodev]

I have tried your exemple, when I console.log formData after append line, I get empty content. What Am I supposted to have ?

[Aw3same]

What do you receive if you log the input parameter in the post method? I update my POST code to the current version I'm using. I log the form and it's empty, but my file travels to bbdd fine

[infodev]

I have used formData.get("keyvalue") to get formData content.

[Oleg Imanilov]

You asking question in "Answer". It is better to ask as a "Question" - so ppl can answer on it.

[Ali Eshghi]

sorry postFile(this.uplo) get only one parameter while in your service it needs 3 parameters, I want to know how its work?

[Ali Eshghi]

and dear @Aw3same what is in FileUploadModel ? also uplo: File

[Aw3same]

I have this export class FileUploadModel { data: File; type: string; }