I am trying to integrate a react app with go-ethereum using web3js.
an event Onsubmit will do the following: 1. Create an account. 2. Open the account. 3. Approve a smart contract with the created account.
Here is my code
import React, { Component } from 'react';
import './App.css';
import web3 from './web3';
....
class App extends Component {
constructor(props){
super(props);
this.state = {requester : '', receiver:'', balance: '', message:''};
}
async componentDidMount(){
const requester = await auth.methods.requester().call();
const receiver = await auth.methods.receiver().call();
const approvers = await auth.methods.approvers(0).call();
const balance = await web3.eth.getBalance(auth.options.address);
this.setState({requester,receiver,balance});
}
onSubmit = async (event)=>{
event.preventDefault();
console.log('Approving the smart contract ..... Mining in process ! ');
var pass = "xxxxxxx"
var newaccount = web3.eth.personal.newAccount(pass);
var promise1 = Promise.resolve(newaccount);
promise1.then(function(value) {
var accountnumber = value;
console.log(accountnumber);
web3.eth.personal.unlockAccount(accountnumber,pass, 1500);
auth.methods.approve().send({gas: '1000000',from: accountnumber});
console.log('Smart Contract approved ! ');
});
};
The account is getting created but while doing the transaction I am receiving the following error.
Approving the smart contract ..... Mining in process ! App.js:57
0x98f76b2673d545F55c0ff1e961f15EF0a7DfBaD3
App.js:71 Smart Contract
approved ! errors.js:29 Uncaught (in promise) Error: Returned error: authentication needed: password or unlock at Object.ErrorResponse (errors.js:29) at index.js:125 at XMLHttpRequest.request.onreadystatechange (index.js:103) at XMLHttpRequestEventTarget.dispatchEvent (xml-http-request-event-target.js:50) at XMLHttpRequest._setReadyState (xml-http-request.js:288) at XMLHttpRequest._onHttpResponseEnd (xml-http-request.js:459) at push../node_modules/stream-http/lib/response.js.exports.IncomingMessage. (xml-http-request.js:413) at push../node_modules/stream-http/lib/response.js.exports.IncomingMessage.emit (events.js:139) at endReadableNT (_stream_readable.js:1030) at afterTickTwo (index.js:31) at Item.push../node_modules/process/browser.js.Item.run (browser.js:167) at drainQueue (browser.js:131) ErrorResponse @ errors.js:29 (anonymous) @ index.js:125 request.onreadystatechange @ index.js:103 XMLHttpRequestEventTarget.dispatchEvent @ xml-http-request-event-target.js:50 XMLHttpRequest._setReadyState @ xml-http-request.js:288 XMLHttpRequest._onHttpResponseEnd @ xml-http-request.js:459 (anonymous) @ xml-http-request.js:413 emit @ events.js:139 endReadableNT @ _stream_readable.js:1030 afterTickTwo @ index.js:31 push../node_modules/process/browser.js.Item.run @ browser.js:167 drainQueue @ browser.js:131 setTimeout (async) _fireError @ index.js:72 sendTxCallback @ index.js:465 (anonymous) @ index.js:125 request.onreadystatechange @ index.js:103 XMLHttpRequestEventTarget.dispatchEvent @ xml-http-request-event-target.js:50 XMLHttpRequest._setReadyState @ xml-http-request.js:288 XMLHttpRequest._onHttpResponseEnd @ xml-http-request.js:459 (anonymous) @ xml-http-request.js:413 emit @ events.js:139 endReadableNT @ _stream_readable.js:1030 afterTickTwo @ index.js:31 push../node_modules/process/browser.js.Item.run @ browser.js:167 drainQueue @ browser.js:131 setTimeout (async) runTimeout @ browser.js:43 push../node_modules/process/browser.js.process.nextTick @ browser.js:156 nextTick @ index.js:30 maybeReadMore @ _stream_readable.js:521 addChunk @ _stream_readable.js:300 readableAddChunk @ _stream_readable.js:278 push../node_modules/readable-stream/lib/_stream_readable.js.Readable.push @ _stream_readable.js:242 (anonymous) @ response.js:47 write @ response.js:44
Edit: Changed the code to catch the errors
web3.eth.personal.unlockAccount(accountnumber,pass, 1500, function(err, result){
if(err){
alert("Error"+ err);
return;}
alert("Account Opening: "+ result);});
......
auth.methods.approve().send({gas: '1000000',from: accountnumber}, function(err, result){
if(err){
alert("Error"+ err);
return;}
alert("Account address: "+ result);
console.log('Smart Contract approved ! ');});
The web3.eth.personal.unlockAccount
is returning "true" but the still the auth.methods.approve
is giving me the error.