"Take control of FileUpload in PrimeNG by manually invoking it

Question

"Take control of FileUpload in PrimeNG by manually invoking it

Is there a way to customize the file upload process using a separate button instead of the component's default Upload button?

If so, how can I achieve this in my code?

Here is an example of what I've attempted:

<button pButton type="button" label="Start Upload"
        (click)="startUpload()"></button>

<p-fileUpload #fileInput name="fileIcon"
              url="rest/batch/file/multimedia/"></p-fileUpload>


@ViewChild('fileInput') fileInput:ElementRef;

constructor( private renderer: Renderer ) { }

startUpload(){

    // this.fileInput.upload(); -> doesn't compile, undefined
    // this.fileInput.nativeElement.upload(); -> this.fileInput.nativeElement is undefined

    ?????????????????
}

angular typescript primeng

Answer 1

Answer №1

Here is a sample code snippet that has been proven to be effective for me:

import {FileUpload} from 'primeng/primeng';

@Component({
  ...
})
export class AppComponent {
    @ViewChild('fileInput') fileInput: FileUpload;

    beginUpload(){
        this.fileInput.upload();
    }
}

Check out the Plunker Example

Answer 2

Here is a sample code snippet that has been proven to be effective for me:

import {FileUpload} from 'primeng/primeng';

@Component({
  ...
})
export class AppComponent {
    @ViewChild('fileInput') fileInput: FileUpload;

    beginUpload(){
        this.fileInput.upload();
    }
}

Check out the Plunker Example

Answer 3

Answer №2

Utilizing built-in buttons is recommended whenever possible. Accessing class variables and methods can be achieved by using ViewChild. Follow these steps:

Ensure customUpload is set to true.
Assign your uploadHandler for custom uploads.
Define a local variable #variable_name in the template.
Implement ViewChild with the local variable as a selector in component.ts.

Add a new variable to your component.ts with FileUpload type (this will grant access to variables and methods - you can right-click in VS Code and select "Go to definition" to view all available options)

@ViewChild('fileInput') fileInput:FileUpload;
// Remember to import FileUpload and FileUploadModule

onSelect() {
  // Implement custom validation for files (e.g., checking image dimensions)
}
customUpload(event) {
  // Customize the upload process here
}

Answer 4

Utilizing built-in buttons is recommended whenever possible. Accessing class variables and methods can be achieved by using ViewChild. Follow these steps:

Ensure customUpload is set to true.
Assign your uploadHandler for custom uploads.
Define a local variable #variable_name in the template.
Implement ViewChild with the local variable as a selector in component.ts.

Add a new variable to your component.ts with FileUpload type (this will grant access to variables and methods - you can right-click in VS Code and select "Go to definition" to view all available options)

@ViewChild('fileInput') fileInput:FileUpload;
// Remember to import FileUpload and FileUploadModule

onSelect() {
  // Implement custom validation for files (e.g., checking image dimensions)
}
customUpload(event) {
  // Customize the upload process here
}

"Take control of FileUpload in PrimeNG by manually invoking it

Answer №1

Answer №2

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