Is it possible to upload multiple files, get their ids and then bind those ids to the parent resource with ImageInput?

Question

from what I have seen all the action happens when I press submit of the form that contains:

<ImageInput multiple source="pictures" accept="image/*">
  <ImageField source="src" title="title" />
</ImageInput>

then some code like that is being run:

const addUploadCapabilities = requestHandler => (type, resource, params) => {
    if ( (type === 'CREATE' || type === "UPDATE")) {
        if (params.data.pictures && params.data.pictures.length) {
            const pictures = params.data.pictures.filter(p => p.rawFile instanceof File)

            const url = config.uploadImageEndpoint;
            //the params contain the image as a fileInstance
            params.data.pictures = [];
            for (let picture of pictures) {
                let form = new FormData();
                form.append('file', picture.rawFile);
                let options = APIUtils.createOptionsForImageUpload(form);
                return fetchUtils.fetchJson(url, options)
                .then(res => {
                    params.data.pictures.push({id: res.json.content[0].id});
                    return requestHandler(type, resource, params)
                });
            }
        }
    }

    return requestHandler(type, resource, params);
};

and then the restClient code is run to save the resource of the form on either create or edit..

I am curious how to get the ids after those files are saved in the database.. and then submit the form and connect those ids to the specific ImageInputs..

Edit:

With the above code I get only an array with the first id of my pictures

Thanks!

Answer 1

No clear canonical mechanism for that exists right now. AOR expects us to handle image upload at the API end with 1 call only. Above would have been a useful feature to have I must say.

A possible way to achieve this would be to let the addUploadCapabilities method above also make a fetch call and call requestHandler asynchronously. after response from the server. Then we can modify the request parameters and continue as previously.

const addUploadCapabilities = requestHandler => (type, resource, params) => {
    if ( (type === 'CREATE' || type === "UPDATE")) {
        if (params.data.pictures && params.data.pictures.length) {
            debugger;

const pictures = params.data.pictures.filter(p => p.rawFile instanceof File)
          let form = new FormData()
          const url = imageUploadURL
          const options = {}
          //the params contain the image as a fileInstance
          form.append('image', params.data.pictures[0].rawFile);         
          options.method = 'POST'
          options.body = form
          return fetchUtils.fetchJson(url, options)
          .then(res => {
               params.data.pictureId = res.json.id
               return requestHandler(type, resource, params)
              })

            );
        }
    }

    return requestHandler(type, resource, params);
};