问题描述
我想部署一个名为 ProjectContract 的新合同。但是,我无法获得如下合同地址。我认为这是旧版本。
address newProjectAddress = new ProjectContract(name,description,requiredPrice,msg.sender);
错误信息是:
我如何为新版本做到这一点?
解决方法
当您创建 new <contractName>
时,它会返回合约实例。您可以将其转换为 address
类型并获取合约地址。
pragma solidity ^0.8.4;
contract ProjectContract {
constructor (string memory name,string memory description,uint256 requiredPrice,address owner) {
}
}
contract MyContract {
event LogAddress(address _address);
function createProjectContract(string memory name,uint256 requiredPrice) external {
ProjectContract newProjectInstance = new ProjectContract(name,description,requiredPrice,msg.sender);
address newProjectAddress = address(newProjectInstance); // here
emit LogAddress(newProjectAddress);
}
}