问题

我正在开发一个整合Crossmint API的NFT市场。我已经像下面这样在我的网站上添加了crossmintPayButton。

import { CrossmintPayButton } from '@crossmint/client-sdk-react-ui';
...
<CrossmintPayButton
    clientId="..."
    environment='staging'
    mintConfig={{
      type: 'erc-721',
      totalPrice: price * quantity,
      _price: price,
      _quantity: quantity,
      _tokenURI: tokenURI
    }}
/>

请问如何编写合同的铸造（mint）函数来铸造NFT？请帮助我。

import { CrossmintPayButton } from '@crossmint/client-sdk-react-ui';
...
<CrossmintPayButton
    clientId="..."
      environment='staging'
      mintConfig={{
      type: 'erc-721',
      totalPrice: price * quantity,
      _price: price
      _quantity: quantity,
      _tokenURI: tokenURI
    }}
/>

答案1

得分: 0

以下是翻译好的部分：

"So the answer to this question is a bit involved, but I'll give you the high level. You'll want to inherit from OpenZeppelin contracts most likely to help minimize the potential mistakes."

"对于这个问题的答案有点复杂，但我会为您提供高层次的解释。您很可能需要继承自OpenZeppelin合同，以帮助减少潜在的错误。"

"Here is an example mint function that will work with Crossmint:"
"这里是一个与Crossmint一起使用的示例铸币函数："

    function mint(address _to, uint256 _quantity) 
        external  
        payable
        isCorrectPayment(_quantity)
        isAvailable(_quantity) 
    {
        mintInternal(_to, _quantity);
    }

    function mintInternal(address _to, uint256 _quantity) internal {
        for (uint256 i = 0; i < _quantity; i++) {
            uint256 tokenId = nextId.current();
            nextId.increment();

            _safeMint(_to, tokenId);

            emit Mint(tokenId);
        }
    } 

    modifier isCorrectPayment(uint256 _quantity) {
        require(msg.value == (price * _quantity), "Incorrect Payment Sent");
        _;
    }

    modifier isAvailable(uint256 _quantity) {
        require(nextId.current() + _quantity <= MAX_SUPPLY, "Not enough tokens left for quantity");
        _;
    }

"这是一个可以与Crossmint一起使用的示例铸币功能："

"All of this code is taken from a sample starter NFT contract you can check out here: https://github.com/dmulvi/evm-721-starter"

"所有这些代码都来自一个样本起始NFT合同，您可以在此处查看：https://github.com/dmulvi/evm-721-starter"

"If you implement this contract you'll need to change your button code slightly to look like this:"
"如果您实施此合同，您需要稍微更改按钮代码，使其类似于以下方式："

    <CrossmintPayButton
        clientId="YOUR_CROSSMINT_CLIENT_ID"
        environment="staging"
        mintConfig={{
            totalPrice: "0.001",
            _quantity: "1"
    }}
    />

"如果您实施此合同，您需要稍微更改您的按钮代码，使其看起来像这样："

    function mint(address _to, uint256 _quantity) 
        external  
        payable
        isCorrectPayment(_quantity)
        isAvailable(_quantity) 
    {
        mintInternal(_to, _quantity);
    }

    function mintInternal(address _to, uint256 _quantity) internal {
        for (uint256 i = 0; i < _quantity; i++) {
            uint256 tokenId = nextId.current();
            nextId.increment();

            _safeMint(_to, tokenId);

            emit Mint(tokenId);
        }
    } 

    modifier isCorrectPayment(uint256 _quantity) {
        require(msg.value == (price * _quantity), "Incorrect Payment Sent");
        _;
    }

    modifier isAvailable(uint256 _quantity) {
        require(nextId.current() + _quantity <= MAX_SUPPLY, "Not enough tokens left for quantity");
        _;
    }

    <CrossmintPayButton
        clientId="_YOUR_CROSSMINT_CLIENT_ID_"
        environment="staging"
        mintConfig={{
            totalPrice: "0.001",
            _quantity: "1"
    }}
    />