Problem with truffle console : Cannot read property 'call' of undefined

Question

I have a problem when executing the code

HelloWorld.deployed().balance.call().then(console.log)

This error introduced: Cannot read property 'call' of undefined This problem is similar to this thread but it does not help on my case.

Thanks for your help!

My code is from this turorial

contract HelloWorld {
  address public owner;
  mapping (address => uint) balances;
  function HelloWorld() {
    owner = msg.sender;
    balances[owner] = 1000;
  }
  function transfer(address _to, uint _value) returns (bool success) {
    if (balances[msg.sender] < _value) {
      return false;
    }
    balances[msg.sender] -= _value;
    balances[_to] += _value;
    return true;
  }
  function getBalance(address _user) constant returns(uint _balance) {
    return balances[_user];
  }
}

Could you provide the code of your contract HelloWorld? – PierrickM Mar 27 '18 at 15:40 — PierrickM, Mar 27 '18 at 15:40

PierrickM · Answer 1 · 2018-03-28T12:01:29.893

0

You don't have a method called "balance" but "getBalance" with an address argument "_user", so you need to call it this way:

HelloWorld.deployed().getBalance.call('YOUR_ADDRESS')

edited Mar 28 '18 at 12:01

answered Mar 27 '18 at 15:54

PierrickM

146
4

I have tried this one. Unfortunately, it did not work. I added my code that you can better help – Van Minh Nhon TRUONG Mar 28 '18 at 08:04
Test with: HelloWorld.deployed().getBalance.call('YOUR_ADDRESS') or something like this should work: HelloWorld.deployed().getBalance.call(web3.eth.accounts[0]) – PierrickM Mar 28 '18 at 12:01
I have tried this one too but it didn't work :((( – Van Minh Nhon TRUONG Mar 28 '18 at 13:15
What do you got when you run : HelloWorld.deployed() ? – PierrickM Mar 28 '18 at 13:46
It seems that HelloWorld.deployed() works well. I got something like this TruffleContract { constructor: { [Function: TruffleContract] _static_methods: { setProvider: [Function: setProvider], new: [Function: new], ... – Van Minh Nhon TRUONG Mar 28 '18 at 14:11
Ok, please copy the result of: Voting.deployed().then(contract => { return contract.abi }) – PierrickM Mar 28 '18 at 14:55
Did you mean HelloWorld.deployed().then(contract => { return contract.abi }) ? – Van Minh Nhon TRUONG Mar 28 '18 at 15:11
Yes sorry for the misspeling – PierrickM Mar 28 '18 at 15:13
This is the result of : HelloWorld.deployed().then(contract => { return contract.abi })
[ { constant: true, inputs: [], name: 'owner', outputs: [ [Object] ], payable: false, stateMutability: 'view', type: 'function' }, { inputs: [], payable: false, stateMutability: 'nonpayable', type: 'constructor' }, { constant: false, inputs: [ [Object], [Object] ], name: 'transfer', outputs: [ [Object] ], payable: false, stateMutability: 'nonpayable', type: 'function' }, { constant: true, ...
– Van Minh Nhon TRUONG Mar 28 '18 at 15:14
please copy the full output to http://pastebin.com/ or something similar – PierrickM Mar 28 '18 at 15:18
https://pastebin.com/Z5iTCryx – Van Minh Nhon TRUONG Mar 28 '18 at 15:24
This is so strange, could you also paste to pastebin the console output of this command : HelloWorld.deployed().getBalance.call(web3.eth.accounts[0]) – PierrickM Mar 28 '18 at 15:25
This produces error: TypeError: Cannot read property 'call' of undefined – Van Minh Nhon TRUONG Mar 28 '18 at 15:35
Ok, last attempt and if doesn't work i really don't know: HelloWorld.deployed().getBalance(web3.eth.accounts[0]) – PierrickM Mar 28 '18 at 15:40
https://snag.gy/tD460A.jpg – Van Minh Nhon TRUONG Mar 28 '18 at 15:52
Sorry but it does not work neither. Thanks – Van Minh Nhon TRUONG Mar 28 '18 at 15:53

Problem with truffle console : Cannot read property 'call' of undefined

1 Answers1