Ngx-uploader : Angular2 File Uploader


Ngx-uploader

The ngx-uploader component provides a handy client-side drag’n’drop file upload experience for Angular 2 applications.

Got a Question or Problem?

Do not open issues for general support questions as we want to keep GitHub issues for bug reports and feature requests. You’ve got much better chances of getting your question answered on Stack Overflow where the questions should be tagged with tag ngx-uploader.

To save your and our time, we will systematically close all issues that are requests for general support and redirect people to Stack Overflow.

Installation of Ngx-uploader

  1. Add ngx-uploader module as dependency to your project.
npm install ngx-uploader --save
  1. Include NgxUploaderModule into your main AppModule or in module where you will use it.
// app.module.ts
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { NgxUploaderModule } from 'ngx-uploader';

@NgModule({
  imports: [
    BrowserModule,
    NgxUploaderModule
  ],
  declarations: [ AppComponent ]
})
export class AppModule {}

or include NgxUploaderModule into your SharedModule. This could be usefull if your project has nested Modules.

// shared.module.ts
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { NgxUploaderModule } from 'ngx-uploader';
...

@NgModule({
  imports: [
    CommonModule,
    NgxUploaderModule,
    ...
  ],
  exports: [
    CommonModule,
    NgxUploaderModule,
    ...
  ],
  ...
})
export class SharedModule {
}
// app.module.ts
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { SharedModule } from './shared.module';

@NgModule({
  imports: [
    BrowserModule,
    SharedModule
  ],
  declarations: [ AppComponent ]
})
export class AppModule {}

Data Structures of Events and Uploaded Files

export interface UploaderOptions {
  concurrency: number; // number of files uploaded at the same time
  allowedContentTypes?: string[]; // content types allowed (default *)
  maxUploads?: number; // max number of files the user can upload
}

export interface UploadProgress {
  status: UploadStatus; // current status of upload for specific file (Queue | Uploading | Done | Canceled)
  data?: {
    percentage: number; // percentage of upload already completed
    speed: number; // current upload speed per second in bytes
    speedHuman: string; // current upload speed per second in human readable form,
    eta: number; // estimated time remaining in seconds
    etaHuman: string; // estimated time remaining in human readable format
  };
}

export interface UploadFile {
  id: string; // unique id of uploaded file instance
  fileIndex: number; // fileIndex in internal ngx-uploader array of files
  lastModifiedDate: Date; // last modify date of the file (Date object)
  name: string; // original name of the file
  size: number; // size of the file in bytes
  type: string; // mime type of the file
  form: FormData; // FormData object (you can append extra data per file, to this object)
  progress: UploadProgress;
  response?: any; // response when upload is done (parsed JSON or string)
  responseStatus?: number; // response status code when upload is done
  responseHeaders?: { [key: string]: string }; // response headers when upload is done
}

// output events emitted by ngx-uploader
export interface UploadOutput {
  type: 'addedToQueue' | 'allAddedToQueue' | 'uploading' | 'done' | 'removed' | 'start' | 'cancelled' | 'dragOver' | 'dragOut' | 'drop';
  file?: UploadFile;
  nativeFile?: File; // native javascript File object, can be used to process uploaded files in other libraries
}

// input events that user can emit to ngx-uploader
export interface UploadInput {
  type: 'uploadAll' | 'uploadFile' | 'cancel' | 'cancelAll' | 'remove' | 'removeAll';
  url?: string; // URL to upload file to
  method?: string; // method (POST | PUT)
  id?: string; // unique id of uploaded file
  fieldName?: string; // field name (default 'file')
  fileIndex?: number; // fileIndex in internal ngx-uploader array of files
  file?: UploadFile; // uploading file
  data?: { [key: string]: string | Blob }; // custom data sent with the file
  headers?: { [key: string]: string }; // custom headers
  concurrency?: number; // concurrency of how many files can be uploaded in parallel (default is 0 which means unlimited)
  withCredentials?: boolean; // apply withCredentials option
}

Upload Restrictions

With version 4.2.1 we’ve introduced restrictions for Content-Types. To not break the behaviour of previous releases, there are no restrictions by default at all.

Look at app-home.component.ts for an example of Content-Type restriction.

If you want to toast a message for the rejected file, add this to your onUploadOutput method.

onUploadOutput(output: UploadOutput): void {
....
} else if (output.type === 'rejected' && typeof output.file !== 'undefined') {
  // console.log(output.file.name + ' rejected');
}
...

Token Authorization

If you have to upload files with Token Authorization, you can set the header in startUpload as follows.

startUpload(): void {
  let token = this.myToken;  // <----  get token
  const event: UploadInput = {
    type: 'uploadAll',
    url: 'http://ngx-uploader.com/upload',
    method: 'POST',
    headers: { 'Authorization': 'JWT ' + token },  // <----  set headers
    data: { foo: 'bar' }
  };

  this.uploadInput.emit(event);
}

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