Handling File Upload

If you need to handle the file upload in the server part, please follow the related documentation.

This documentation assumes you have a /media_objects endpoint accepting multipart/form-data-encoded data.

To manage the upload in the admin part, you need to customize the create form or the edit form.

Add a FileInput as a child of the guesser. For example, for the create form:

import {
  HydraAdmin,
  ResourceGuesser,
  CreateGuesser,
} from "@api-platform/admin";
import { FileField, FileInput } from "react-admin";

const MediaObjectsCreate = props => (
  <CreateGuesser {...props}>
    <FileInput source="file">
      <FileField source="src" title="title" />
    </FileInput>
  </CreateGuesser>
);

export default () => (
  <HydraAdmin entrypoint="https://demo.api-platform.com">
    <ResourceGuesser name="media_objects" create={MediaObjectsCreate} />
    {/* ... */}
  </HydraAdmin>
);

And that's it! You don't need to decorate the data provider if you are using the Hydra one: it detects that you have used a FileInput and uses a multipart/form-data request instead of a JSON-LD one.