ngx-uploader

Angular 2+ File Uploader

http://ngx-uploader.com

Got a Question or Problem?

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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

1. Add ngx-uploader module as dependency to your project.

npm install ngx-uploader --save

2. 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
  maxFileSize?: number; // max size of the file in bytes 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
  includeWebKitFormBoundary?: boolean; // If false, only the file is send trough xhr.send (WebKitFormBoundary is omit)
  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' },
    includeWebKitFormBoundary: true // <----  set WebKitFormBoundary
  };

  this.uploadInput.emit(event);
}

Example

You can always run working example by cloning this repository, building project with yarn build:prod and running server with node ./dist-app/api/index.js.

Component Code

import { Component, EventEmitter } from '@angular/core';
import { UploadOutput, UploadInput, UploadFile, humanizeBytes, UploaderOptions } from 'ngx-uploader';

@Component({
  selector: 'app-home',
  templateUrl: 'app-home.component.html'
})
export class AppHomeComponent {
  options: UploaderOptions;
  formData: FormData;
  files: UploadFile[];
  uploadInput: EventEmitter<UploadInput>;
  humanizeBytes: Function;
  dragOver: boolean;

  constructor() {
    this.options = { concurrency: 1, maxUploads: 3, maxFileSize: 1000000 };
    this.files = []; // local uploading files array
    this.uploadInput = new EventEmitter<UploadInput>(); // input events, we use this to emit data to ngx-uploader
    this.humanizeBytes = humanizeBytes;
  }

  onUploadOutput(output: UploadOutput): void {
    switch (output.type) {
      case 'allAddedToQueue':
        // uncomment this if you want to auto upload files when added
        // const event: UploadInput = {
        //   type: 'uploadAll',
        //   url: '/upload',
        //   method: 'POST',
        //   data: { foo: 'bar' }
        // };
        // this.uploadInput.emit(event);
        break;
      case 'addedToQueue':
        if (typeof output.file !== 'undefined') {
          this.files.push(output.file);
        }
        break;
      case 'uploading':
        if (typeof output.file !== 'undefined') {
          // update current data in files array for uploading file
          const index = this.files.findIndex(file => typeof output.file !== 'undefined' && file.id === output.file.id);
          this.files[index] = output.file;
        }
        break;
      case 'removed':
        // remove file from array when removed
        this.files = this.files.filter((file: UploadFile) => file !== output.file);
        break;
      case 'dragOver':
        this.dragOver = true;
        break;
      case 'dragOut':
      case 'drop':
        this.dragOver = false;
        break;
      case 'done':
        // The file is downloaded
        break;
    }
  }

  startUpload(): void {
    const event: UploadInput = {
      type: 'uploadAll',
      url: 'http://ngx-uploader.com/upload',
      method: 'POST',
      data: { foo: 'bar' }
    };

    this.uploadInput.emit(event);
  }

  cancelUpload(id: string): void {
    this.uploadInput.emit({ type: 'cancel', id: id });
  }

  removeFile(id: string): void {
    this.uploadInput.emit({ type: 'remove', id: id });
  }

  removeAllFiles(): void {
    this.uploadInput.emit({ type: 'removeAll' });
  }
}

Template Code

For whole template code please check here.

<div
  class="drop-container"
  ngFileDrop
  [options]="options"
  (uploadOutput)="onUploadOutput($event)"
  [uploadInput]="uploadInput"
  [ngClass]="{ 'is-drop-over': dragOver }"
>
  <h1>Drag &amp; Drop</h1>
</div>

<label class="upload-button">
  <input
    type="file"
    ngFileSelect
    [options]="options"
    (uploadOutput)="onUploadOutput($event)"
    [uploadInput]="uploadInput"
    multiple
  />
  or choose file(s)
</label>

<button type="button" class="start-upload-btn" (click)="startUpload()">Start Upload</button>

LICENCE

MIT