获取合约地址

Question

我在网上搜索时看到了一个例子。

我想部署一个新合约，它是 ProjectContract。但是，我无法获得如下合约地址。我认为这是旧版本。

address newProjectAddress = new ProjectContract(name, description, requiredPrice, msg.sender);

错误信息是：

如何为新版本执行此操作？

Answer 1

当您创建 new <contractName> 时，它 returns 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, string memory description, uint256 requiredPrice) external {
        ProjectContract newProjectInstance = new ProjectContract(name, description, requiredPrice, msg.sender);
        address newProjectAddress = address(newProjectInstance); // here
        emit LogAddress(newProjectAddress);
    }
}

获取合约地址

Getting contract address

ethereum

solidity

smartcontracts