Truffle, Contracts and Deploy

Question

I am following this tutorial. Everything worked fine. Now I want to getBalanceOf tokens on my nodejs app, but I keep getting this error:

tokenContract.methods.balanceOf is not a function.

My code is as follows:

var provider = new web3.providers.HttpProvider(node.url);
            var w3 = new web3(provider);

            var tokenContract = new w3.eth.Contract(abi, query.token_address);

            console.log(tokenContract);

            w3.eth.call({
                to: query.pub_address,
                data: tokenContract.methods.balanceOf(query.pub_address).encodeABI()
            }).then(function(balance) {
                console.log(balance);
            }).catch(function(error) {
                console.log(error)
                reject(error)
            })

If I check my tokenContract methods in console, by printing (tokenContract.methods) I see there is no balanceOf method exposed.

Any ideas?

Answer 1

As it was mentioned in the comment section below the question, the problem was that the CrowdSale contract was used instead of Token contract. The reason of the error was that the contract CrowdSale doesn't have balanceOf() method.

Read more about Crowd Sale contract.

Read more about Token contract.