truffle deployment: not sure about 2_deploy_contracts.js for 2 contracts

Question

I am working on Ubuntu 18.04. When I execute the “truffle migrate” command, I am getting first deploying and then replacing contract messages. Is this right? I am not sure about the code of 2_deploy_contracts.js for 2 contracts.

Somebody please guide me is my 2_deploy_contracts.js correct?

I am following the tutorial at:

Medium JustDev

The migration file 2_deploy_contracts.js is:

const Victim = artifacts.require('./Victim.sol')
const Attacker = artifacts.require('./Attacker.sol')

module.exports = function(deployer){
   deployer
     .deploy(Victim)
     .then(() =>
        deployer.deploy(Attacker, Victim.address)
     )
};

Is the above code correct?

Somebody pleae guide me about the code of deployment file.

Answer 1

yes it is in solidity version 0.4.8 the constructor function's name is the contract's name itself.

The attacker contract constructor function has a param and it is the address of the victim contract. So first he deploy Victim contract then after that he deploy Attacker contract with Victim contract address as the param for constructor function.

You can see the constructor example at this Creating Contract example at this doc: https://solidity.readthedocs.io/en/v0.4.8/contracts.html