Truffle and Greeter Contract tutorial

cryptomonk1

Hello all!

Everything works and when I call the function greet: greeter.greet.call() on testrpc I get: ' ' , which is correct, because there is nothing in it!

How do I input for example: "hello world" in the empty variable greeting using truffle?

Source tutorial:
https://ethereum.org/greeter

Thank you!

o0ragman0o

@cryptomonk1 I'm not using truffle, but the message is set in the constructor which means you need to pass it when you create the contract instance.

e.g. greetMe = new greeter("Hello me");

cryptomonk1

Hi, thank you for taking your time!

I must admit that I only have a very basic understanding and that I am still not able to get it working.

The steps I follow:

1. Compile
2. Migrate

Then in Truffle console: var greeter = greeter.deployed()

How do I implement what was explained above in the constructor greeter?

contract greeter is mortal {

string greeting;

function greeter(string _greeting) public {
greeting = _greeting;
}

function greet() constant returns (string) {
return greeting;
}
}

I hope I make sense..

Best wishes,

o0ragman0o

@cryptomonk1 I'd have to go through the truffle tut's myself as I don't know that framework sorry.

o0ragman0o

@cryptomonk1 Look like Truffle has abstracted the web3 library a bit.

From glancing over that, it look like Truffle will create a new instance using <contract_name>.new(<constructor_parameters>)

So I guess Greeter.new("Hello World!") should get it working...