ng2-uploader

For demos please see demos page.

Angular2 File Uploader

Installation

npm install ng2-uploader

Examples

1. Basic Example
2. Multiple Files Example
3. Basic Progressbar Example
4. Multiple Files Progressbars Example

Backend Examples

1. NodeJS using HapiJS
2. PHP (Plain)

Basic Example

component.ts

import {Component} from '@angular/core';
import {UPLOAD_DIRECTIVES} from 'ng2-uploader/ng2-uploader';

@Component({
  selector: 'demo-app',
  templateUrl: 'app/demo.html',
  directives: [UPLOAD_DIRECTIVES],
})
export class DemoApp {
  uploadFile: any;
  options: Object = {
    url: 'http://localhost:10050/upload'
  };

  handleUpload(data): void {
    if (data && data.response) {
      data = JSON.parse(data.response);
      this.uploadFile = data;
    }
  }
}

component.html

<input type="file" 
       [ng-file-select]="options"
       (onUpload)="handleUpload($event)">

<div>
Response: {{ uploadFile | json }}
</div>

Multiple files example

component.ts

import {Component} from '@angular/core';
import {UPLOAD_DIRECTIVES} from 'ng2-uploader/ng2-uploader';

@Component({
  selector: 'basic-multiple',
  templateUrl: 'basic-multiple.html',
  directives: [UPLOAD_DIRECTIVES],
})
export class BasicMultiple {
  uploadedFiles: any[] = [];
  options: Object = {
      url: 'http://localhost:10050/upload'
  };

  handleUpload(data): void {
    if (data && data.response) {
      data = JSON.parse(data.response);
      this.uploadedFiles.push(data);
    }
  }
}

component.html

<input type="file" 
       style="display:none;"
       [ng-file-select]="options"
       (onUpload)="handleUpload($event)"
       multiple>
</div>

<div>
Response: <br/>{{ uploadedFiles | json }}
</div>

Progressbar example

component.ts

import {Component, NgZone} from '@angular/core';
import {UPLOAD_DIRECTIVES} from 'ng2-uploader/ng2-uploader';

@Component({
  selector: 'basic-progressbar',
  templateUrl: 'app/components/basic-progressbar/basic-progressbar.html',
  directives: [UPLOAD_DIRECTIVES],
})
export class BasicProgressbar {
  uploadFile: any;
  uploadProgress: number;
  uploadResponse: Object;
  zone: NgZone;
  options: Object = {
    url: 'http://localhost:10050/upload'
  };

  constructor() {
    this.uploadProgress = 0;
    this.uploadResponse = {};
    this.zone = new NgZone({ enableLongStackTrace: false });
  }

  handleUpload(data): void {
    this.uploadFile = data;
    this.zone.run(() => {
      this.uploadProgress = data.progress.percent;
    });
    let resp = data.response;
    if (resp) {
      resp = JSON.parse(resp);
      this.uploadResponse = resp;
    }
  }
}

component.html

<div>
  <label for="file-pb" class="ui small black button right icon upload-button">
      <i class="ion-document icon"></i>
      Choose file
  </label>
  <input type="file" 
         id="file-pb"
         style="display:none;"
         [ng-file-select]="options"
         (onUpload)="handleUpload($event)">
</div>

<div *ngIf="uploadFile">
Progress: {{ uploadProgress }}%
</div>
<div *ngIf="uploadFile">
  <div class="ui indicating olive progress">
    <div class="bar" [style.width]="uploadProgress + '%'"></div>
    <div class="label">Uploading file ({{ uploadProgress }}%)</div>
  </div>
</div>

<div>
Response: <br/>{{ uploadFile | json }}
</div>

Multiple files progressbars example

component.ts

import {Component, NgZone} from '@angular/core';
import {UPLOAD_DIRECTIVES} from 'ng2-uploader/ng2-uploader';

@Component({
  selector: 'multiple-progressbar',
  templateUrl: 'app/components/multiple-progressbar/multiple-progressbar.html',
  directives: [UPLOAD_DIRECTIVES]
})
export class MultipleProgressbar {
  uploadFiles: any[];
  uploadProgresses: any[] = [];
  zone: NgZone;
  options: Object = {
    url: 'http://localhost:10050/upload'
  };

  constructor() {
    this.zone = new NgZone({ enableLongStackTrace: false });
  }

  handleUpload(data): void {
    let id = data.id;
    let index = this.findIndex(id);
    if (index === -1) {
      this.uploadProgresses.push({id: id, percent: 0});
    }
    if (this.uploadProgresses[index]) {
      this.zone.run(() => {
        this.uploadProgresses[index].percent = data.progress.percent;
      });
    }
  }

  findIndex(id: string): number {
    return this.uploadProgresses.findIndex(x => x.id === id);
  }

}

component.html

<div>
  <label for="files-pb" class="ui small black button right icon upload-button">
      <i class="ion-document-text icon"></i>
      Choose files
  </label>
  <input type="file" 
         id="files-pb"
         style="display:none;"
         [ng-file-select]="options"
         (onUpload)="handleUpload($event)"
         multiple>
</div>

<div class="ui divider"></div>

<div *ngFor="#progressObj of uploadProgresses">
  <div class="ui indicating olive progress">
    <div class="bar" [style.width]="progressObj.percent + '%'"></div>
    <div class="label">Uploading file ({{ progressObj.percent }}%)</div>
  </div>
</div>

Image preview example and manual upload

component.ts

import {Component, NgZone} from '@angular/core';
import {UPLOAD_DIRECTIVES} from 'ng2-uploader/ng2-uploader';

@Component({
  selector: 'image-preview',
  templateUrl: 'app/components/image-preview/image-preview.html',
  directives: [UPLOAD_DIRECTIVES]
})
export class ImagePreview {
  @ViewChild(NgFileSelect) private fileSelect: NgFileSelect;
  previewData = ''
  options: Object = {
    url: 'http://localhost:10050/upload',
    previewUrl: true,
    autoUpload: false
  };

  constructor() {
    
  }
  getData(data) {
     this.previewData = data;
  }
  upload() {
     this.fileSelect.uploader.uploadFilesInQueue();
  }


}

component.html

<div [ng-file-select]="options"
     (onUpload)="handleUpload($event)"
     (onPreviewData)="getData($event)">
</div>
<img [src]="previewData"/>
<button (click)="clearImage()">
    Clear
</button>
<button (click)="upload()">
    Upload
</button>

Token-authorized call example

component.ts

import {Component} from '@angular/core';
import {UPLOAD_DIRECTIVES} from 'ng2-uploader/ng2-uploader';

@Component({
  selector: 'demo-app',
  templateUrl: 'app/demo.html',
  directives: [UPLOAD_DIRECTIVES],
})
export class DemoApp {
  uploadFile: any;
  options: Object = {
    url: 'http://localhost:10050/upload',
    withCredentials: true,
    authToken: localStorage.getItem('token'),
    authTokenPrefix: "Bearer" // required only if different than "Bearer"
    
  };

  handleUpload(data): void {
    if (data && data.response) {
      data = JSON.parse(data.response);
      this.uploadFile = data;
    }
  }
}

component.html

<input type="file" 
       [ng-file-select]="options"
       (onUpload)="handleUpload($event)">

<div>
Response: {{ uploadFile | json }}
</div>

Custom field name example

You may want to sent file with specific form field name. For that you can use options.fieldName. If not provided then the field will be named "file".

component.ts

import {Component} from '@angular/core';
import {UPLOAD_DIRECTIVES} from 'ng2-uploader/ng2-uploader';

@Component({
  selector: 'demo-app',
  templateUrl: 'app/demo.html',
  directives: [UPLOAD_DIRECTIVES],
})
export class DemoApp {
  uploadFile: any;
  options: Object = {
    url: 'http://localhost:10050/upload',
    fieldName: 'logo'    
  };

  handleUpload(data): void {
    if (data && data.response) {
      data = JSON.parse(data.response);
      this.uploadFile = data;
    }
  }
}

component.html

<input type="file" 
       [ng-file-select]="options"
       (onUpload)="handleUpload($event)">

<div>
Response: {{ uploadFile | json }}
</div>

Backend Example Using HapiJS

'use strict';

const Hapi        = require('hapi');
const Inert       = require('inert');
const Md5         = require('md5');
const Multiparty  = require('multiparty');
const fs          = require('fs');
const path        = require('path');
const server      = new Hapi.Server();

server.connection({ port: 10050, routes: { cors: true } });
server.register(Inert, (err) => {});

const upload = {
  payload: {
    maxBytes: 209715200,
    output: 'stream',
    parse: false
  },
  handler: (request, reply) => {
    const form = new Multiparty.Form();
    form.parse(request.payload, (err, fields, files) => {
      if (err) {
        return reply({status: false, msg: err});
      }

      let responseData = [];

      files.file.forEach((file) => {
        let fileData = fs.readFileSync(file.path);
        const originalName = file.originalFilename;
        const generatedName = Md5(new Date().toString() + 
          originalName) + path.extname(originalName);
        const filePath = path.resolve(__dirname, 'uploads', 
          generatedName);

        fs.writeFileSync(filePath, fileData);
        const data = {
          originalName: originalName,
          generatedName: generatedName
        };

        responseData.push(data);
      });

      reply({status: true, data: responseData});
    });
  }
};

const uploads = {
  handler: {
    directory: {
      path: path.resolve(__dirname, 'uploads')
    }
  }
};

server.route([
  { method: 'POST', path: '/upload',          config: upload  },
  { method: 'GET',  path: '/uploads/{path*}', config: uploads }
]);

server.start(() => {
  console.log('Upload server running at', server.info.uri);
});

Backend example using plain PHP

<?php 

header("Access-Control-Allow-Origin: *");

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
  echo json_encode(array('status' => false));
  exit;
}

$path = 'uploads/';

if (isset($_FILES['file'])) {
  $originalName = $_FILES['file']['name'];
  $ext = '.'.pathinfo($originalName, PATHINFO_EXTENSION);
  $generatedName = md5($_FILES['file']['tmp_name']).$ext;
  $filePath = $path.$generatedName;
  
  if (!is_writable($path)) {
    echo json_encode(array(
      'status' => false,
      'msg'    => 'Destination directory not writable.'
    ));
    exit;
  }

  if (move_uploaded_file($_FILES['file']['tmp_name'], $filePath)) {
    echo json_encode(array(
      'status'        => true,
      'originalName'  => $originalName,
      'generatedName' => $generatedName
    ));
  }
}
else {
  echo json_encode(
    array('status' => false, 'msg' => 'No file uploaded.')
  );
  exit;
}

?>

Demos

For more information, examples and usage examples please see demos

LICENCE

MIT