在不同的字段上上传多个图像

Question

我正在使用https://marmelab.com/admin-on-rest/RestClients.html#decorating-your-rest-client-example-of-file-upload上显示的代码将图片上传到服务器。但是此代码仅返回同一字段上的多个图像。 如何在不同的字段中上传多个图像？

const addUploadCapabilities = requestHandler => (type, resource, params) => {
    if (type === 'UPDATE' && resource === 'posts') {
        if (params.data.pictures && params.data.pictures.length) {
            // only freshly dropped pictures are instance of File
            const formerPictures = params.data.pictures.filter(p => !(p instanceof File));
            const newPictures = params.data.pictures.filter(p => p instanceof File);

            return Promise.all(newPictures.map(convertFileToBase64))
                .then(base64Pictures => base64Pictures.map(picture64 => ({
                    src: picture64,
                    title: `${params.data.title}`,
                })))
                .then(transformedNewPictures => requestHandler(type, resource, {
                    ...params,
                    data: {
                        ...params.data,
                        pictures: [...transformedNewPictures, ...formerPictures],
                    },
                }));
        }
    }
}