vue-transmit

Vue-Transmit

A Vue.js drag & drop uploader based on Dropzone.js (~26kB, ~9kB gzipped). Many thanks to Matias Meno for paving the way with the original Dropzone.js! Check it out for any of your non-vue projects. 🙌

Features

Vue-Transmit is a fork of Dropzone.js that has been completely rewritten in ES6 and Vue.js. Instead of creating a Vue wrapper component that duplicates all of the methods and event logic from Dropzone, Vue-Transmit implements them directly on the component. This cuts down on library size, and since Vue already has a first-class event emitter, we get even more space savings.

Also, a special File class has been written (VTransmitFile) to add useful information not present in the native File object (dimensions, upload stats, etc.). This is necessary for Vue to register these files reactively, since the native File object's properties are read-only.

• HTML 5 file uploads
• Completely written in Vue.js—no wrapper components
• Emits upload lifecycle events (accepted, sending, progress, success, etc.)
• Image thumbnail previews
• Support for concurrent uploads
• Scoped slots allow for fully customizable styling

Props: <vue-transmit>

Property	Type	Default
tag	String	"div"
dropZoneClasses	Array, Object, String	null
url	String	undefined
method	String	"post"
withCredentials	Boolean	false
timeout	Number	0
maxConcurrentUploads	Number	2
uploadMultiple	Boolean	false
maxFileSize	Number	256
paramName	String	"file"
createImageThumbnails	Boolean	true
maxThumbnailFileSize	Number	10
thumbnailWidth	Number	120
thumbnailHeight	Number	120
fileSizeBase	Number	1000
maxFiles	Number	null
params	Object	default
headers	Object	default
clickable	Boolean	true
ignoreHiddenFiles	Boolean	true
acceptedFileTypes	Array	default
autoProcessQueue	Boolean	true
autoQueue	Boolean	true
capture	String	null
renameFile	Function	identity
dictFileTooBig	String	"File is too big ({{ fileSize }}MiB). Max file size: {{ maxFileSize }}MiB."
dictInvalidFileType	String	"You can't upload files of this type."
dictResponseError	String	"Server responded with {{ statusCode }} code."
dictMaxFilesExceeded	String	"You can not upload any more files."
accept	Function	default
resize	Function	default

Events

Event	Arguments	Description
drop	DragEvent	The drop event is fired when an data transfer is dropped on the drop target.
drag-start	DragEvent	The drag-start event is fired when the user starts dragging an element or text selection.
drag-end	DragEvent	The drag-end event is fired when a drag operation is being ended (by releasing a mouse button or hitting the escape key).
drag-enter	DragEvent	The drag-enter event is fired when a dragged element or text selection enters a valid drop target.
drag-over	DragEvent	The drag-over event is fired when an element or text selection is being dragged over a valid drop target (every few hundred milliseconds).
drag-leave	DragEvent	The drag-leave event is fired when a dragged element or text selection leaves a valid drop target.
added-file	VTransmitFile	Fired on change from the hidden file input after the Native File has been copied to VTransmitFile and added to the component data. (status: 'added')
added-files	VTransmitFile[]	Fired on change from the hidden file input after the Native Files have been copied to VTransmitFiles and added to the component data. (status: 'added')
removed-file	VTransmitFile	Fired on the removal of a file.
thumbnail	VTransmitFile, Blob|URL	Fires on creation of a thumbnail.
error	VTransmitFile, message: String, XmlHttpRequest	Fired on an ajax upload error. (status: 'error')
error-multiple	VTransmitFile[], message: String, XmlHttpRequest	Fired on an ajax upload error. (status: 'error')
processing	VTransmitFile	Fired after the status is changed to 'uploading', right before the ajax request.
processing-multiple	VTransmitFile[]	Fired after the status is changed to 'uploading', right before the ajax request.
upload-progress	VTransmitFile, progress: Number, bytesSent: Number	Fired on progress of the XHR.
total-upload-progress	VTransmitFile, totalUploadProgress: Number	Fired directly after upload-progress.
sending	VTransmitFile, XmlHttpRequest, FormData	Fired right before the XHR is sent.
sending-multiple	VTransmitFile[], XmlHttpRequest, FormData	Fired right before the XHR is sent.
success	VTransmitFile, response: String, LoadEvent	Fired on load of the XHR.
success-multiple	VTransmitFile[], response: String, LoadEvent	Fired on load of the XHR.
canceled	VTransmitFile	Fired upon cancellation of the XHR. (status: 'canceled')
canceled-multiple	VTransmitFile[]	Fired upon cancellation of the XHR. (status: 'canceled')
complete	VTransmitFile	Fired upon completion of the XHR. (success or failure)
complete-multiple	VTransmitFile[]	Fired upon completion of the XHR. (success or failure)
reset	n/a	Fired when all files have been removed.
max-files-exceeded	VTransmitFile	Fired if a file is added that exceeds the max files prop.
max-files-reached	VTransmitFile[]	Fired when the total accepted files on the instance exceeds the max files prop.
queue-complete	VTransmitFile	Fired once all added files have uploaded and the queue has been flushed.

VTransmitFile

{
  "_nativeFile": {},
  "id": "v-transmit-file-1",
  "accepted": true,
  "lastModified": 1478117443000,
  "lastModifiedDate": "2016-11-02T20:10:43.000Z",
  "name": "cosmo.jpg",
  "processing": true,
  "size": 142776,
  "status": "success",
  "type": "image/jpeg",
  "upload": {
    "bytesSent": 142776,
    "progress": 100,
    "speed": {
      "kbps": 10.06,
      "mbps": 0.01
    },
    "start": 1503273157993,
    "end": 1503273158029,
    "time": 0.036,
    "total": 142776
  },
  "webkitRelativePath": "",
  "width": 700,
  "height": 700,
  "xhr": {},
  "dataUrl": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAHgAAAB4CAYAAAA5ZDbSAAAgAElEQVR4XlS9B7RmZ3UluG/...=",
  "VERSION": "1.0.5"
}

Usage

<template>
  <main id="root" class="mt-5">
    <div class="container">
      <div class="row">
        <header class="col-12 text-center">
          <h1 class="mb-5"><code>&lt;vue-transmit&gt;</code></h1>
        </header>
        <vue-transmit class="col-12"
                      tag="section"
                      v-bind="options"
                      drop-zone-classes="bg-faded"
                      ref="uploader"
                      >
          <div class="d-flex align-items-center justify-content-center w-100"
                style="height:50vh; border-radius: 1rem;">
            <button class="btn btn-primary"
                    @click="triggerBrowse">Upload Files</button>
          </div>
          <template slot="files" scope="props">
            <div v-for="(file, i) in props.files" :key="file.id" :class="{'mt-5': i === 0}">
              <div class="media">
                <img :src="file.dataUrl" class="img-fluid d-flex mr-3">
                <pre class="media-body">{{ file | json }}</pre>
              </div>
            </div>
          </template>
        </vue-transmit>
      </div>
    </div>
  </main>
</template>

<script>
  Vue.use(VueTransmit)
  window.app = new Vue({
    el: '#root',
    data: {
      options: {
        acceptedFileTypes: ['image/*'],
        url: './upload.php',
        clickable: false
      }
    },
    methods: {
      triggerBrowse() {
        this.$refs.uploader.triggerBrowseFiles()
      },
    },
    filters: {
      json(value) {
        return JSON.stringify(value, null, 2)
      }
    }
  })
</script>