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The File Dropzone component for Retool Apps

A drag-and-drop area to select single or multiple files.

The maximum size for uploaded files is 40MB.

Demo

Settings​

File Dropzone includes the following configurable options when building apps in the IDE.

File typesAppend newly selected filesCustom ruleDisabledEvent handlersForm data keyHide validation messageSuffix iconPrefix iconShow on desktopShow on mobileMake file public on uploadLoadingMaintain space when hiddenMarginMax itemsMax sizeMin itemsMax sizeParse filesRequiredSelection typeReplace file with same nameAlways show in edit modeStylesVariantTextHelper textUpload file to Retool StorageValue

Properties​

All properties for File Dropzone with supported data types or values. You can write JavaScript almost anywhere in Retool to manipulate or read property values.

accept​

string[]

A list of file extensions or file-type specifiers to accept.

Whether to append additional files to the value.

The custom validation message to display if the invalid is true.

Whether input, interaction, selection, or triggering is disabled.

events​

object[]

A list of configured event handlers that trigger actions or queries.

Properties

event​

enum

The event type. Refer to the events section for a list of supported events.

method​

enum

The JavaScript method to perform when type is datasource, widget, state, or localStorage.

The type of action to perform.

Values
datasource

Control query.

widget

Control component.

script

Run script.

state

Set variable.

localStorage

Set localStorage.

util

Perform utility action (e.g., Open URL or Confetti).

files​

Deprecated
object[]

A list of metadata from the selected files. Includes name, type, size, and lastModified.

The key used by a Form component to assign default values to input fields using form.initialData, and to construct the form.data property.

global​

boolean

Whether the object is globally scoped for use in all app pages.

​

boolean

Whether the component is visible.

Whether to hide the validation message if the invalid is true.

The suffix icon to display.

Values

You can select an icon or dynamically set one with a valid icon key.

Demo

The prefix icon to display.

Values

You can select an icon or dynamically set one with a valid icon key.

Demo

id​

string

The unique identifier.

invalid​

boolean

Whether the value has failed any validation rules.

Whether the component is visible in the desktop layout.

Whether the component is visible in the mobile layout.

Whether to make the file public when uploading with Retool Storage.

loaderPosition​

The position of the loading indicator if loading is true.

loading​

boolean

Whether to display a loading indicator.

Whether the component takes up space on the canvas if hidden is true.

The amount of margin to render outside.

Values
4px 8px

Normal margin.

0

No margin.

The maximum number of items to allow.

The maximum file size allowed.

The minimum number of items to allow.

The minimum file size allowed.

parsedValue​

The parsed value of the input.

Whether to parse plain-text content.

parsing​

boolean

Whether content is being parsed.

pluginType​

string

The plugin type.

Whether a value is required.

The type of file selection.

Values
single

Select a single file.

multiple

Select multiple files.

directory

Select a directory of files.

Whether to replace a file with the same name when uploading with Retool Storage.

Whether to remain visible in the editor if hidden is true.

style​

object

Custom style options in use. Not all style options may be available for all components.

The button variant to use.

Values
solid

Solid background color.

outline

Button outline only.

text​

string

The primary text content.

The tooltip text to display.

Whether to upload a file to Retool Storage.

validationMessage​

string

The validation message to display if invalid is true.

value​

object[]

A list of uploaded files.

Properties

base64Data​

string

The base64 encoded data of the item.

sizeBytes​

number

The size of the item in bytes.

type​

string

The MIME type.

Methods​

JavaScript API methods for interacting with File Dropzone. You can write JavaScript almost anywhere in Retool and use methods to manipulate data and property values.

clearValidation​

Clear the validation message from the input field.

fileDropzone.clearValidation()

clearValue​

Clear the current values.

fileDropzone.clearValue()

focus​

Set focus on the input field.

fileDropzone.focus()

resetValue​

Reset the current value to the default value.

fileDropzone.resetValue()

scrollIntoView​

Scrolls the canvas or parent container so that the selected component appears in the visible area.

fileDropzone.scrollIntoView(scrollIntoViewOptions)
Parameters

scrollIntoViewOptions​

object

The scroll options.

Properties

behavior​

enum

The scroll behavior.

Values
auto

Scroll immediately to the specified position.

smooth

Scroll gradually to the specified position.

block​

enum

The scroll position relative to the component.

Values
nearest

Scrolls only the minimum amount required for the component to appear in the visible area. Scrolling does not occur if the component is already in view.

start

Scrolls to position the component at the top of the visible area.

center

Scrolls to position the component in the middle of the visible area.

end

Scrolls to position the component at the bottom of the visible area.

setDisabled​

Set the disabled value to toggle whether the input field is disabled. Defaults to true without a parameter.

fileDropzone.setDisabled(disabled)
Parameters

Whether input, interaction, selection, or triggering is disabled.

setHidden​

Set the hidden value to toggle whether the component is visible. Defaults to true without a parameter.

fileDropzone.setHidden(hidden)
Parameters

​

boolean

Whether the component is visible.

Events​

Events are triggered by user interactions, such as clicking a button or entering a value. Use event handlers to trigger queries or other actions in response to events.

change​

The value is changed.

parse​

Data is parsed.