Get contract address from instantiated ContractRef

Question

Based on this example: https://docs.rs/ink/latest/ink/struct.EnvAccess.html#method.instantiate_contract

Im doing something similar:

#[ink(message)]
        pub fn new_multisig(&mut self, threshold: u8, owners_list: Vec<AccountId>, salt: Vec<u8>) {
            let multisig = build_create::<MultiSigRef>()
                .code_hash(self.multisig_codehash)
                .gas_limit(0)
                .endowment(0)
                .exec_input(
                    ExecutionInput::new(Selector::new(ink::selector_bytes!("new")))
                        .push_arg(threshold)
                        .push_arg(owners_list),
                )
                .salt_bytes(salt)
                .returns::<MultiSigRef>()
                .instantiate();

            self.env().emit_event(NewMultisig {
                multisig_address: multisig, //Here i need to get the address of the new contract
                threshold: threshold,
                owners_list: owners_list,
            });
        }

But i need to obtain the address of the instantiated contract. How can i do it?

Answer 1

You can use to_account_id method to obtain address of instantiated smart contract.

let contract_address = multisig.to_account_id();

Taking into account Luca's comment, the workable sample would be

use ink::ToAccountId;

let contract_address = multisig.to_account_id();