第122篇 笔记-用工厂模式创建合约

Posted 2022-12-15 wonderBlock

本篇可以认为是 第85篇 笔记-用合约创建合约 的续篇；

介绍在工厂模式下，如何随意创建并管理新合约；

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.3;

contract Car 
    address public owner;
    string public model;
    address public carAddr;

    constructor(address _owner, string memory _model) payable 
        owner = _owner;
        model = _model;
        carAddr = address(this);
    


contract CarFactory 
    Car[] public cars;

    function create(address _owner, string memory _model) public 
        Car car = new Car(_owner, _model);
        cars.push(car);
    

    function createAndSendEther(address _owner, string memory _model)
        public
        payable
    
        Car car = (new Car)value: msg.value(_owner, _model);
        cars.push(car);
    

    function create2(
        address _owner,
        string memo