Truffle Deployment – Returning Token Contract Address on Truffle Deploy

addressescontract-deploymentsoliditytruffletruffle-migration

I am trying to figure out how to return the address of a contract when I deploy it with truffle's deployer.deploy. So the goal is that when I deploy a contract that is a custom token, I want to return that address once it's deployed and pass that address to my CrowdSale contract constructor. I am getting undefined for the instance of the deployed contract when doing this like so:

1_initial_migration.js

module.exports = function(deployer) {
  deployer.deploy(Migrations);
  deployer.deploy(CrowdTestToken).then((instance) => {
    console.log(instance);
    deployer.deploy(CrowdSale, instance.address);
  });
};

In the above example, instance is undefined. Does anybody know how I can get the address of the CrowdTestToken contract in the deployment script?

Best Answer

The address of the contract is just the variable name of the deployed contract. Try this:

deployer.deploy(CrowdTestToken).then(function(){
    return deployer.deploy(CrowdSale, CrowdTestToken.address)});

Related Solutions

Truffle Contract Deployment – How to Deploy a Contract with a Constructor Parameter Using Truffle Migrate

You can add the constructor parameters as extra arguments to the deploy() call

const BaconMaker = artifacts.require('./BaconMaker.sol')

module.exports = (deployer, network, accounts) => {
  const userAddress = accounts[3];
  deployer.deploy(BaconMaker, userAddress)
}

In your case since Farm will create BaconMaker on demand, you do not have to deploy BaconMaker from the deploy scripts.

There's no general solution that fit all situations. Sometimes you create a single contract that will deploy child contracts. Also you can deploy several contracts and add them to a register after deployment, so they can communicate with each other.

A single contract is easiest, but you are bound by the block gas limit. Having several contracts is more complex because it no easy to communicate between them and you have to be more careful with the organization.

[Ethereum] Migrations ran out of gas

You can set also the gas amount on your truffle-config.js, try setting the gas like this one below:

...
networks: {
    ropsten: {
      provider: new HDWalletProvider(mnemonic, "https://ropsten.infura.io/xxxxxxxx"),
      network_id: 3,
      gas: 4600000
    },
}
...

Best Answer

Related Solutions

Truffle Contract Deployment – How to Deploy a Contract with a Constructor Parameter Using Truffle Migrate

[Ethereum] Migrations ran out of gas

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