关于Brownie的安装测试在这里已经讲到，本篇着重讲如何部署合约。

首先在infura创建一个项目

（如果读过本篇文章的话可以忽略下面这个步骤）

初始化brownie项目编译合约代码

1. 执行 brownie init

2. 编写合约代码

   // SPDX-License-Identifier: MIT
   pragma solidity ^0.8.0;
   
   import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
   import "@openzeppelin/contracts/utils/Counters.sol";
   import "../interfaces/IERC4907.sol";
   
   contract ERC4907 is ERC721, IERC4907 {
       struct UserInfo
       {
           address user;   // address of user role
           uint64 expires; // unix timestamp, user expires
       }
   
       mapping (uint256  => UserInfo) private _users;
   
       constructor()
        ERC721("RentNFTTest","RNT"){
   
        }
   
       /// @notice set the user and expires of a NFT
       /// @dev The zero address indicates there is no user
       /// Throws if `tokenId` is not valid NFT
       /// @param user  The new user of the NFT
       /// @param expires  UNIX timestamp, The new user could use the NFT before expires
       function setUser(uint256 tokenId, address user, uint64 expires) public override virtual{
           // 判断msg.sender是否是该token的owner
           require(_isApprovedOrOwner(msg.sender, tokenId), "ERC4907: transfer caller is not owner nor approved");
   
           // 设置 租赁者以及到期时间
           UserInfo storage info = _users[tokenId];
           info.user = user;
           info.expires = expires;
           // 更新该token的User
           emit UpdateUser(tokenId,user,expires);
       }
   
       /// @notice Get the user address of an NFT
       /// @dev The zero address indicates that there is no user or the user is expired
       /// @param tokenId The NFT to get the user address for
       /// @return The user address for this NFT
       function userOf(uint256 tokenId) public view override virtual returns(address){
           if( uint256(_users[tokenId].expires) >=  block.timestamp){
               return _users[tokenId].user;
           }
           return address(0);
       }
   
       /// @notice Get the user expires of an NFT
       /// @dev The zero value indicates that there is no user
       /// @param tokenId The NFT to get the user expires for
       /// @return The user expires for this NFT
       function userExpires(uint256 tokenId) public view override virtual returns(uint256){
           return _users[tokenId].expires;
       }
   
       /// @dev See {IERC165-supportsInterface}.
       function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721) returns (bool) {
           return interfaceId == type(IERC4907).interfaceId || super.supportsInterface(interfaceId);
       }
   
       function mint(tokenId) public returns (uint256){
           _safeMint(msg.sender, tokenId);
           return tokenId;
       }
   }
   

代码在这篇文章功能测试已经提到，这里直接搬过来用

1. 配置 brownie-config.yaml

2. 执行 brownie compile来编译生成abi文件等

在之前的基础上配置brownie-config.yaml

dotenv: .env
networks:  #  指定使用 goerli测试网 WEB3_INFURA_PROJECT_ID是上方infura截图中框出的api_key
  goerli:
    host: https://goerli.infura.io/v3/${WEB3_INFURA_PROJECT_ID}
wallets:
  PRIVATE_KEY: ${PRIVATE_KEY}   # 钱包地址的私钥，因为比较重要通过导入.env

在项目目录中创建一个.env

在 scripts/ 中创建一个脚本 depoly.py

from brownie import ERC4907, accounts, config
import brownie


def get_account():
    # 要部署到测试网络不在本地，添加账户对象
    # config数据来自brownie-config.yaml
    return accounts.add(config['wallets']['PRIVATE_KEY'])


def test_mint(account):
    mint_nft = ERC4907.deploy({'from', account})
    mint_nft.mint(1, {'from': account})
    # 查看mint nft 之后的owner
    print('nft token_id owner/minter:', mint_nft.ownerOf(1))


# 一定要有main()函数作为程序的入口
def main():
    account = get_account()
    print('account=', account)
    test_mint(account)

此时执行brownie run scripts/depoly.py

mint之后可以看到nft的owner是我的账户

查看以下brownie自带的部署的网络，这里使用goerli，如果没有要用到的网络可以自己添加，具体操作可以查看brownie文档

部署

获取测试币

部署的话需要交gas费，这样需要到goerli的水龙头获取一些测试币

把metamask网络设置成goerli测试网

这个地址包含多种获取测试币的方式

https://faucetlink.to/goerli

这个地址是我看到的给的比较多的

https://faucets.chain.link/

然后将此合约部署到以太坊goerli测试网

brownie run scripts/depoly.py --network goerli

拿着合约地址到以太坊测试网查看下

第二行记录是创建这个合约的记录

第一行mint记录是depoly.py中mint nft的记录

这样就代表合约部署成功。

关于Brownie的安装测试在这里已经讲到，本篇着重讲如何部署合约。

首先在infura创建一个项目

（如果读过本篇文章的话可以忽略下面这个步骤）

初始化brownie项目编译合约代码

1. 执行 brownie init

2. 编写合约代码

   // SPDX-License-Identifier: MIT
   pragma solidity ^0.8.0;
   
   import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
   import "@openzeppelin/contracts/utils/Counters.sol";
   import "../interfaces/IERC4907.sol";
   
   contract ERC4907 is ERC721, IERC4907 {
       struct UserInfo
       {
           address user;   // address of user role
           uint64 expires; // unix timestamp, user expires
       }
   
       mapping (uint256  => UserInfo) private _users;
   
       constructor()
        ERC721("RentNFTTest","RNT"){
   
        }
   
       /// @notice set the user and expires of a NFT
       /// @dev The zero address indicates there is no user
       /// Throws if `tokenId` is not valid NFT
       /// @param user  The new user of the NFT
       /// @param expires  UNIX timestamp, The new user could use the NFT before expires
       function setUser(uint256 tokenId, address user, uint64 expires) public override virtual{
           // 判断msg.sender是否是该token的owner
           require(_isApprovedOrOwner(msg.sender, tokenId), "ERC4907: transfer caller is not owner nor approved");
   
           // 设置 租赁者以及到期时间
           UserInfo storage info = _users[tokenId];
           info.user = user;
           info.expires = expires;
           // 更新该token的User
           emit UpdateUser(tokenId,user,expires);
       }
   
       /// @notice Get the user address of an NFT
       /// @dev The zero address indicates that there is no user or the user is expired
       /// @param tokenId The NFT to get the user address for
       /// @return The user address for this NFT
       function userOf(uint256 tokenId) public view override virtual returns(address){
           if( uint256(_users[tokenId].expires) >=  block.timestamp){
               return _users[tokenId].user;
           }
           return address(0);
       }
   
       /// @notice Get the user expires of an NFT
       /// @dev The zero value indicates that there is no user
       /// @param tokenId The NFT to get the user expires for
       /// @return The user expires for this NFT
       function userExpires(uint256 tokenId) public view override virtual returns(uint256){
           return _users[tokenId].expires;
       }
   
       /// @dev See {IERC165-supportsInterface}.
       function supportsInterface(bytes4 interfaceId) public view virtual override(ERC721) returns (bool) {
           return interfaceId == type(IERC4907).interfaceId || super.supportsInterface(interfaceId);
       }
   
       function mint(tokenId) public returns (uint256){
           _safeMint(msg.sender, tokenId);
           return tokenId;
       }
   }
   

代码在这篇文章功能测试已经提到，这里直接搬过来用

1. 配置 brownie-config.yaml

2. 执行 brownie compile来编译生成abi文件等

在之前的基础上配置brownie-config.yaml

dotenv: .env
networks:  #  指定使用 goerli测试网 WEB3_INFURA_PROJECT_ID是上方infura截图中框出的api_key
  goerli:
    host: https://goerli.infura.io/v3/${WEB3_INFURA_PROJECT_ID}
wallets:
  PRIVATE_KEY: ${PRIVATE_KEY}   # 钱包地址的私钥，因为比较重要通过导入.env

在项目目录中创建一个.env

在 scripts/ 中创建一个脚本 depoly.py

from brownie import ERC4907, accounts, config
import brownie


def get_account():
    # 要部署到测试网络不在本地，添加账户对象
    # config数据来自brownie-config.yaml
    return accounts.add(config['wallets']['PRIVATE_KEY'])


def test_mint(account):
    mint_nft = ERC4907.deploy({'from', account})
    mint_nft.mint(1, {'from': account})
    # 查看mint nft 之后的owner
    print('nft token_id owner/minter:', mint_nft.ownerOf(1))


# 一定要有main()函数作为程序的入口
def main():
    account = get_account()
    print('account=', account)
    test_mint(account)

此时执行brownie run scripts/depoly.py

mint之后可以看到nft的owner是我的账户

查看以下brownie自带的部署的网络，这里使用goerli，如果没有要用到的网络可以自己添加，具体操作可以查看brownie文档

部署

获取测试币

部署的话需要交gas费，这样需要到goerli的水龙头获取一些测试币

把metamask网络设置成goerli测试网

这个地址包含多种获取测试币的方式

https://faucetlink.to/goerli

这个地址是我看到的给的比较多的

https://faucets.chain.link/

然后将此合约部署到以太坊goerli测试网

brownie run scripts/depoly.py --network goerli

拿着合约地址到以太坊测试网查看下

第二行记录是创建这个合约的记录

第一行mint记录是depoly.py中mint nft的记录

这样就代表合约部署成功。