Upload a file

Uploads a file to an existing bucket.

Policy permissions required:
- buckets permissions: none
- objects permissions: insert

Parameters

path

REQUIRED

string

The file path, including the file name. Should be of the format folder/subfolder/filename.png. The bucket must already exist before attempting to upload.

fileBody

REQUIRED

FileBody

The body of the file to be stored in the bucket.

fileOptions

Optional

FileOptions

cacheControl

Optional

string

The number of seconds the asset is cached in the browser and in the Supabase CDN. This is set in the `Cache-Control: max-age=<seconds>` header. Defaults to 3600 seconds.

contentType

Optional

string

the `Content-Type` header value. Should be specified if using a `fileBody` that is neither `Blob` nor `File` nor `FormData`, otherwise will default to `text/plain;charset=UTF-8`.

duplex

Optional

string

The duplex option is a string parameter that enables or disables duplex streaming, allowing for both reading and writing data in the same stream. It can be passed as an option to the fetch() method.

upsert

Optional

boolean

When upsert is set to true, the file is overwritten if it exists. When set to false, an error is thrown if the object already exists. Defaults to false.


final avatarFile = File('path/to/file');
final String path = await supabase.storage.from('avatars').upload(
      'public/avatar1.png',
      avatarFile,
      fileOptions: const FileOptions(cacheControl: '3600', upsert: false),
    );