I am using web3 and I have the following code:
pragma solidity ^0.4.2;
contract Charity{
function ping() public constant returns (uint) {
return 200;
}
}
And I am compiling/calling it in typescript with:
import * as fs from 'fs' ;
import * as solc from 'solc' ;
import * as Web3 from 'web3' ;
var web3 = new Web3(new Web3.providers.WebsocketProvider('ws://localhost:8546'));
var contract_path : string = "path/to/Charity.sol"
const input = fs.readFileSync(contract_path)
const output = solc.compile(input.toString(), 1);
var contract_name = ":" + pr.last(contract_path.split("/")).split(".")[0]
const bytecode = output.contracts[contract_name].bytecode
const abi_ = JSON.parse(output.contracts[contract_name].interface);
web3.eth.getAccounts().then(accounts => {
var coinbase = accounts[0];
var receiver = accounts[1];
// create contract
var myContract = new web3.eth.Contract([], {
from : coinbase
, gasPrice : '20000000000'
});
// set address to coinbase, and jsonInterface to abi
myContract.options.address = coinbase;
myContract.options.jsonInterface = abi_;
// deploy contract -> problem, how do I get the abi in here?
var deployedContract = myContract.deploy({
data: '0x' + bytecode,
}).send({
from: coinbase,
gas : 1500000 ,
gasPrice: '30000000000000'
}, (err, hash) => {
if (err) { console.log("error on deployment: ", err) }
console.log("Hash: ", hash)
})
// send contract fn to network to be executed
// problem: this is not doing what it's suppose to
myContract.methods.ping().send({ from : coinbase }, (err, val) => {
console.log("ping(): ", err, val)
})
myContract.methods.ping().send({from: coinbase})
.on('transactionHash', function(hash){
console.log("hash: ", hash)
})
.on('receipt', function(receipt){
console.log("recepit: ", receipt)
})
.on('confirmation', function(confirmationNumber, receipt){
console.log("conffirmation: ", receipt)
})
.on('error', console.error);
});
myContract.methods.ping().send... is not returning the value 200 .
How to properly get the return value?
