智能合约-工厂合约模式

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pragma solidity ^0.6.12;

contract AutoShop {
    address[] autoAssets;
    function createChildContract(string memory brand, string memory model) public payable {
        // 增加检查：ether是否足够支付 car
        address newAutoAsset = address(new AutoAsset(brand, model, msg.sender));
        autoAssets.push(newAutoAsset);
    }
    function getDeployChildContracts() public view returns (address[] memory) {
        return autoAssets;
    }
}

contract AutoAsset {
    string brand;
    string model;
    address owner;
    constructor(string memory _brand, string memory _model, address _owner) public {
        brand = _brand;
        model = _model;
        owner = _owner;
    }
}

address newAutoAsset = address(new AutoAsset(...) 出发了一个交易，将子合约部署到区块链并返回合约地址。同时，将合约地址存储到数组 address[] autoAssets 中。

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