Image upload using react-admin - react-admin

Question

I am new to react-admin. I am using react-admin to upload the file. I have following the step mentioned below in tutorial.
But after I submit the request...I see http trace as follow. I see blob link instead of Base64 image payload.
{
"pictures": {
"rawFile": {
"preview": "blob:http://127.0.0.1:3000/fedcd180-cdc4-44df-b8c9-5c7196788dc6"
},
"src": "blob:http://127.0.0.1:3000/fedcd180-cdc4-44df-b8c9-5c7196788dc6",
"title": "Android_robot.png"
}
}
Can someone please advice how to get base64 image payload instead of link?

Answer 1

Check to see if you have this handler, most likely you did not change the name of the resource posts to your:
const addUploadCapabilities = requestHandler => (type, resource, params) => {
if (type === 'UPDATE' && resource === 'posts') {

Answer 2

Create your custom dataProvider to convert picture to base64
import restServerProvider from 'ra-data-json-server';
const servicesHost = 'http://localhost:8080/api';
const dataProvider = restServerProvider(servicesHost);
const myDataProfider = {
...dataProvider,
create: (resource, params) => {
if (resource !== 'your-route' || !params.data.pictures) {
// fallback to the default implementation
return dataProvider.create(resource, params);
}
const myFile = params.data.pictures;
if ( !myFile.rawFile instanceof File ){
return Promise.reject('Error: Not a file...'); // Didn't test this...
}
return Promise.resolve( convertFileToBase64(myFile) )
.then( (picture64) => ({
src: picture64,
title: `${myFile.title}`
}))
.then( transformedMyFile => dataProvider.create(resource, {
...params,
data: {
...params.data,
myFile: transformedMyFile
}
}));
}
};
const convertFileToBase64 = file => new Promise((resolve, reject) => {
const reader = new FileReader();
reader.readAsDataURL(file.rawFile);
reader.onload = () => resolve(reader.result);
reader.onerror = reject;
});
export default myDataProfider;
And get image data at your Server API
exports.create = (req, res) => {
if(req.body.myFile){
var file = req.body.myFile;
var fs = require('fs');
var data = file.src.replace(/^data:image\/\w+;base64,/, "");
var buf = Buffer.from(data, 'base64');
fs.writeFile(`upload/${file.title}`, buf, err => {
if (err) throw err;
console.log('Saved!');
});
}};