Angular file uploader is an Angular 2/4/5 file uploader module with Real-Time Progress Bar, Angular Universal Compatibility and multiple themes which includes Drag and Drop and much more.

Install

npm i angular-file-uploader

Usage

• Bootstrap.min.css is required. Include

  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">

  in your index.html.
• Import FileUploadModule inside your app.module.ts

  import { FileUploadModule } from "angular-file-uploader";

  @NgModule({
    imports: [
        ...,
        FileUploadModule,
        ...
    ]
  })

Example-1 ( with minimal configuration )

<angular-file-uploader
      [config]="afuConfig">
</angular-file-uploader>

afuConfig = {
    uploadAPI: {
      url:"https://example-file-upload-api"
    }
};

Example-2 ( with all available configuration )

<angular-file-uploader 
      [config]="afuConfig"
      [resetUpload]=resetVar
      (ApiResponse)="DocUpload($event)">
</angular-file-uploader>

afuConfig = {
    multiple: false,
    formatsAllowed: ".jpg,.png",
    maxSize: "1",
    uploadAPI:  {
      url:"https://example-file-upload-api",
      headers: {
     "Content-Type" : "text/plain;charset=UTF-8",
     "Authorization" : `Bearer ${token}`
      }
    },
    theme: "dragNDrop",
    hideProgressBar: true,
    hideResetBtn: true,
    hideSelectBtn: true
};

Properties	Description	Default Value
config : object	It's a javascript object. Use this to add custom constraints to the module. All available key-value pairs are given in example 2.For detailed decription refer the table below.	{}
ApiResponse:EventEmitter	It will return the response it gets back from the uploadAPI. Assign one custom function ,for example " DocUpload($event) " here, where " $event " will contain the response from the api.
resetUpload : boolean	Give it's value as " true " whenever you want to clear the list of uploads being displayed. It's better to assign one boolean variable ('resetVar' here)to it and then change that variable's value. Remember to change 'resetVar' value 'true' to 'false' after every reset.	false

[config]	Description	Default Value
multiple : boolean	Set it as " true " for uploading multiple files at a time and as " false " for single file at a time.	false
formatsAllowed : string	Specify the formats of file you want to upload.	'.jpg,.png,.pdf,.docx, .txt,.gif,.jpeg'
maxSize : number	Maximum size limit for files in MB.	20 MB
uploadAPI.url : string	Complete api url to which you want to upload.	undefined
uploadAPI.headers : {}	Provide headers you need here.	{}
theme : string	Specify the theme name you want to apply. Available Themes: ' dragNDrop ', ' attachPin '	If no theme or wrong theme is specified, default theme will be used instead.
hideProgressBar:boolean	Set it as " true " to hide the Progress bar.	false
hideResetBtn:boolean	Set it as " true " to hide the 'Reset' Button.	false
hideSelectBtn:boolean	Set it as " true " to hide the 'Select File' Button.	false

---

A Better Way to reset the module

You have seen that by using 'resetUpload' property, you can reset the module easily, however if you need to reset more than one time, there's a better way of doing that( bcoz in 'resetUpload' property, you have to make it as false in order to use it again):-

Example-3

<angular-file-uploader #fileUpload1
      [config]="afuConfig"
      [resetUpload]=resetVar
      (ApiResponse)="DocUpload($event)">
</angular-file-uploader>

• Assign one local reference variable (here 'fileUpload1') to the component.
• Now use this local reference variable in your xyz.component.ts file.

      @ViewChild('fileUpload1')
      private fileUpload1:  FileUploadComponent;

  • Remember to import ViewChild and FileUploadComponent properly in your component.

      import { ViewChild } from '@angular/core';
      import { FileUploadComponent } from "angular-file-uploader";

• That's it.....all done, now just use

      this.fileUpload1.resetFileUpload();

  to reset the module hassle-free anytime.

Points to note:

• Files are uploaded in FormData format.

Coming Soon:

• More themes.
• More customization options.