upload-file - Simplified file upload

Some options is borrowed from jquery.upload

var Upload = require('upload-file');

install

npm install upload-file --save

express demo

app.post('/upload', function(req, res) {
  var upload = new Upload({
    dest: 'dest/path',
    maxFileSize: 100 * 1024,
    acceptFileTypes: /(\.|\/)(gif|jpe?g|png)$/i,
    rename: function(name, file) {
      console.log(this.fields);
      return file.filename;
    }
  });

  upload.on('end', function(fields, files) {
    if (!fields.channel) {
      this.cleanup();
      this.error('Channel can not be empty');
      return;
    }
    res.send('ok')
  });

  upload.on('error', function(err) {
    res.send(err);
  });

  upload.parse(req);
});

API

constructor(options)

• {object} options required
  • {string} options.dest required
    Upload path
  • {RegExp} options.acceptFileTypes
    The regular expression for allowed file types, matches against either file type or file name
  • {function} options.rename(name, file)
    Return filename for change the filename or path, name is the input file name, and file is a object
  • {number} [options.maxNumberOfFiles=Infinity]
    The limit of files to be uploaded
  • {number} [options.minNumberOfFiles=1]
    The minimum of files to be uploaded
  • {number} [options.maxFileSize=Infinity]
    The maximum allowed file size in bytes
  • {number} [options.minFileSize=0]
    The minimum allowed file size in bytes
  • {object} options.messages
    Error and info messages
    • message.maxNumberOfFiles
    • message.minNumberOfFiles
    • message.acceptFileTypes
    • message.maxFileSize
    • message.minFileSize
    • message.invalidRequest

upload.on(event, listener)

Inherit from node's EventEmitter

upload.parse(req)

Parse the http request

upload.cleanup()

If the form is invalid, you can invoke this method for clear unnecessary file

upload.error(msg)

Emit error event with msg

upload.fields

The fields of form, it's a object

{
  name: 'value',
  city: ['1', '2']
}

upload.files

The files of form, it's a obejct

{
  file: {
    filename: 'index.css',
    path: 'upload/path/index.css',
    type: 'text/css',
    size: 100
  },
  files: [{...}, {...}] 
}

// If the file.filename is empty string, 
// it's means that user do not upload file with this file input

How to run upload demo

1. cd upload-file modules path
2. npm install
3. node express.js