Getting the address of a contract deployed by another contract

Question

I am trying to deploy a contract from another factory contract and then return the address of the newly created contract. The address it returns however is the transaction hash

Answer 1

We ran across this problem today, and we're solving it as follows:

In the creation of the new contract raise an event.

Then once the block has been mined use the transaction hash and call web3.eth.getTransaction: http://web3js.readthedocs.io/en/1.0/web3-eth.html#gettransaction

Then look at the logs object and you should find the event called by your newly created contract with its address.

Note: this assumes you're able to update the Solidity code for the contract being created, or that it already calls such an event upon creation.