Form

The @uppy/form plugin has several features to integrate with HTML <form> elements.

It collects user-specified metadata from form fields, right before Uppy begins uploading/processing files.
It can append upload results back to the form as a hidden field. The appended result is a stringified version of a result returned from uppy.upload() or complete event.

import Form from '@uppy/form'

uppy.use(Form, {
  // Options
})

Installation

This plugin is published as the @uppy/form package.

Install from NPM:

npm install @uppy/form

In the CDN package, the plugin class is available on the Uppy global object:

const { Form } = Uppy

Options

The @uppy/form plugin has the following configurable options:

uppy.use(Form, {
  target: null,
  resultName: 'uppyResult',
  getMetaFromForm: true,
  addResultToForm: true,
  submitOnSuccess: false,
  triggerUploadOnSubmit: false,
})

`id: 'Form'`

A unique identifier for this plugin. It defaults to 'Form'.

`target: null`

DOM element or CSS selector for the form element. This is required for the plugin to work.

`resultName: 'uppyResult'`

The name attribute for the <input type="hidden"> where the result will be added.

`getMetaFromForm: true`

Configures whether to extract metadata from the form. When set to true, the Form plugin will extract all fields from a <form> element before upload begins. Those fields will then be added to global uppy.state.meta and each file’s meta, and appended as (meta)data to the upload in an object with [file input name attribute] -> [file input value] key/values.

`addResultToForm: true`

Configures whether to add upload/encoding results back to the form in an <input name="uppyResult" type="hidden"> element.

`triggerUploadOnSubmit: false`

Configures whether to start the upload when the form is submitted. When the user presses a submit button, this will prevent form submission, and instead upload files. You can then:

use submitOnSuccess: true if you need the form to actually be submitted once all files have been uploaded.
listen for uppy.on('complete') to do something else if the file uploads are all you need. For example, if the form is used for file metadata only.

`submitOnSuccess: false`

Configures whether to submit the form after Uppy finishes uploading/encoding.

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