ng2-chunk-file-upload

Easy to use Angular2 directives for files upload (demo)

Quick start

1. A recommended way to install ng2-chunk-file-upload is through npm package manager using the following command:

npm i ng2-chunk-file-upload --save

Alternatively, you can download it in a ZIP file.

2. Currently ng2-chunk-file-upload contains two directives: ng2-file-select and ng2-file-drop. ng2-file-select is used for 'file-input' field of form and ng2-file-drop is used for area that will be used for dropping of file or files.

3. More information regarding using of ng2-chunk-file-upload is located in demo and demo sources.

Using ng2-chunk-file-upload in a project

1. Install as shown in the above section.

2. Import FileUploadModule into the module that declares the component using ng2-chunk-file-upload:

import { FileUploadModule } from 'ng2-chunk-file-upload';

3. Add it to [imports] under @NgModule:

imports: [ ... FileUploadModule, ... ]

4. Import FileUploader into the component:

import { FileUploader } from 'ng2-chunk-file-upload';

5. Create a variable for the API url:

const URL = 'path_to_api';

6. Initialize it:

public uploader:FileUploader = new FileUploader({url: URL});

API for ng2FileSelect

Properties

• uploader - (FileUploader) - uploader object. See using in demo

Events

• onFileSelected - fires when files are selected and added to the uploader queue

API for ng2FileDrop

Properties

• uploader - (FileUploader) - uploader object. See using in demo

Parameters supported by this object:

1. url - URL of File Uploader's route
2. authToken - Auth token that will be applied as 'Authorization' header during file send.
3. disableMultipart - If 'true', disable using a multipart form for file upload and instead stream the file. Some APIs (e.g. Amazon S3) may expect the file to be streamed rather than sent via a form. Defaults to false.
4. itemAlias - item alias (form name redefenition)
5. formatDataFunction - Function to modify the request body. 'DisableMultipart' must be 'true' for this function to be called.
6. formatDataFunctionIsAsync - Informs if the function sent in 'formatDataFunction' is asynchronous. Defaults to false.
7. parametersBeforeFiles - States if additional parameters should be appended before or after the file. Defaults to false.
8. chunkSize - The Size of each chunk in Bytes, if this parameter is set the file chunk upload functionality will run. Defaults to Null.
9. currentChunkParam - Parameter Sent with the chunk request, the current chunk number of the file. Defaults to 'current_chunk'.
10. totalChunkParam - Parameter Sent with the chunk request, the total number of chunks of the file. Defaults to 'total_chunks'.
11. chunkMethod - After the first chunk, this method is set. Defaults to 'PUT' because is the standard for update.

Events

• fileOver - it fires during 'over' and 'out' events for Drop Area; returns boolean: true if file is over Drop Area, false in case of out. See using in ts demo and html demo
• onFileDrop - it fires after a file has been dropped on a Drop Area; you can pass in $event to get the list of files that were dropped. i.e. (onFileDrop)="dropped($event)"

Troubleshooting

Please follow this guidelines when reporting bugs and feature requests:

1. Use GitHub Issues board to report bugs and feature requests (not our email address)
2. Please always write steps to reproduce the error. That way we can focus on fixing the bug, not scratching our heads trying to reproduce it.

Thanks for understanding!

Using/Sending Chunk Files Feature

If you want to send the files chunked you can just set the chunk paramets on the uploader object

If your chunk request changes the link after the first request you should use this code

this.uploader.onCompleteChunk = (item,response,status,headers)=>{
      response = JSON.parse(response);
      if(response['id']){
          item.url = YOUR_NEW_URL+response['id']+'/';
      }
  }

Code snippet on how to use the Chunk File Feature on your code

  ...
  import { FileUploader } from 'ng2-chunk-file-upload';
  ...
  export class SimpleDemoComponent {
    ...
    uploader:FileUploader;
    ...
    constructor () {
      ...
        this.uploader = new FileUploader({
          url: URL,
          disableMultipart : false,
          isHTML5: true,
          chunkSize: (1024*1024), // 2MB
          currentChunkParam: 'current_chunk',
          totalChunkParam: 'total_chunks',
          chunkMethod: 'PUT',
          //authToken = 'JWT '+TOKEN,
        });
        this.uploader.onBeforeUploadItem = (item) => {
            // If you use credentials this might help you with the "Access-Control-Allow-Origin" error
            item.withCredentials = false;
        };
        this.uploader.onCompleteChunk = (item, response, status, headers) => {
          //Insert the Logic here to start uploading next chunks
          // Example, setting the ID of the File uploaded and chaning the link for the next request
          // In my Case the API is using a put method with the link containing the PK of the object
          response = JSON.parse(response);
          if (response['id']) {
              item.setId(response['id']);
              item.url = this.media_url + item.getId() + '/';
          }
        };
        this.uploader.onErrorItem = (item, response, status, headers) => {
           // Treat the error on the upload
           // On the chunk method we try to upload a chunk for 10 times before triggering this error
        };
        this.uploader.onRemoveItem = (item) => {
           // Treat the file removal from the server
        };
      ...
    }

License

The MIT License (see the LICENSE file for the full text)