[Ethereum] In the truffle console, how to set and get current account

accountstestrpctruffle

I'm using the $ truffle console.
I can see my available accounts using truffle(development)> web3.eth.accounts.

But when I run some smart contract code, which account is running the contract?

And, how can I change the account which is running the contracts in the truffle console?

Best Answer

In truffle console:

var accounts;
// in web front-end, use an onload listener and similar to this manual flow ... 
web3.eth.getAccounts(function(err,res) { accounts = res; });

var account1 = accounts[0]; // first account
var account2 = accounts[1]; // second account, if exists
...

var contract;
Contract.deployed()
.then(function(response) {
  contract = response;
  return contract.function(arg1, arg2, {from: account2}); // send txn from 2nd account

In Truffle tests you can start out with accounts passed in for convenience:

contract("basic test pattern", function(accounts) {
  owner = accounts[0];
  ...

Hope it helps.

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[Ethereum] way to set specific account when using truffle console rinkeby

Since you are using HDWalletProvider it will only support accounts derived from the mnemonic. It doesn't know the private key required to sign messages from other addresses.

As alternative you pass to HDWalletProvider an array of private keys.

var privateKeys = [
  "3f841bf589fdf83a521e55d51afddc34fa65351161eead24f064855fc29c9580",
  "9549f39decea7b7504e15572b2c6a72766df0281cea22bd1a3bc87166b1ca290",
];
var provider = new HDWalletProvider(privateKeys, "http://localhost:8545", 0, 2); //start at address_index 0 and load both addresses

[Ethereum] Retrieve specific account in truffle 5 console

Truffle v5 uses web3 v1 that uses promises to return values. To access the third account you have do something like this:

account = (await web3.eth.getAccounts())[3]

Now account contains the address.

Best Answer

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[Ethereum] way to set specific account when using truffle console rinkeby

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