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问候，

您能告诉我如何为 OpenSea 托管的收藏中的每件商品添加价格吗？

所以，我有工作代码，它创建了：

1.集合名称（来自部署前的构造）

2.NFT 符号（来自部署前的构建）

3. ipfs 的 URI（从部署前的构造 ex：ipfs://QmQtP8RNjvcVtKqcPwukgckWF74ojBjzahVzE3qCCnqv4f/

我的智能合约示例：

// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;

import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";

contract NFT is ERC721Enumerable, Ownable {
  using Strings for uint256;

  string public baseURI;
  string public baseExtension = ".json";
  uint256 public cost = 10000000000000000;
  uint256 public maxSupply = 10000;
  uint256 public maxMintAmount = 100;
  bool public paused = false;
  mapping(address => bool) public whitelisted;

  constructor(
    string memory _name,
    string memory _symbol,
    string memory _initBaseURI
  ) ERC721(_name, _symbol) {
    setBaseURI(_initBaseURI);
    mint(msg.sender, 5); // 5- for test
  }

  // internal
  function _baseURI() internal view virtual override returns (string memory) {
    return baseURI;
  }

  // public
  function mint(address _to, uint256 _mintAmount) public payable {
    uint256 supply = totalSupply();
    require(!paused);
    require(_mintAmount > 0);
    require(_mintAmount <= maxMintAmount);
    require(supply + _mintAmount <= maxSupply);

    if (msg.sender != owner()) {
        if(whitelisted[msg.sender] != true) {
          require(msg.value >= cost * _mintAmount);
        }
    }

    for (uint256 i = 1; i <= _mintAmount; i++) {
      _safeMint(_to, supply + i);
    }
  }

  function walletOfOwner(address _owner)
    public
    view
    returns (uint256[] memory)
  {
    uint256 ownerTokenCount = balanceOf(_owner);
    uint256[] memory tokenIds = new uint256[](ownerTokenCount);
    for (uint256 i; i < ownerTokenCount; i++) {
      tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
    }
    return tokenIds;
  }

  function tokenURI(uint256 tokenId)
    public
    view
    virtual
    override
    returns (string memory)
  {
    require(
      _exists(tokenId),
      "ERC721Metadata: URI query for nonexistent token"
    );

    string memory currentBaseURI = _baseURI();
    return bytes(currentBaseURI).length > 0
        ? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension))
        : "";
  }

  //only owner
  function setCost(uint256 _newCost) public onlyOwner {
    cost = _newCost;
  }

  function getCost() public view returns (uint256) {
    return cost;
  }

  function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner {
    maxMintAmount = _newmaxMintAmount;
  }

  function setBaseURI(string memory _newBaseURI) public onlyOwner {
    baseURI = _newBaseURI;
  }

  function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
    baseExtension = _newBaseExtension;
  }

  function pause(bool _state) public onlyOwner {
    paused = _state;
  }
 
 function whitelistUser(address _user) public onlyOwner {
    whitelisted[_user] = true;
  }
 
  function removeWhitelistUser(address _user) public onlyOwner {
    whitelisted[_user] = false;
  }

  function withdraw() public onlyOwner {
      uint256 balance = address(this).balance;
      payable(msg.sender).transfer(balance);
  }
}

和我的项目 json 文件示例：

{
  "description": "Test Description",
  "external_url": "http://testurl.com",
  "image": "ipfs://QmSrkLg3UR5AUthhCZfrK9nrX3fxJJ4aCJK7B99rUkCa72/4.png",
  "name": "Test Name #4",
  "symbol": "TNFT",
  "collection": {
    "name": "TestNFT123_321",
    "family": ""
  },
  "date": 1643919095,
  "attributes": {
    "Story": "In Caffe",
    "Company": "Test Company",
    "Some": "thing else"
  }
}

在 OpenSea 上，我创建了带有项目的集合名称，但是带有活动价格按钮。我做错了什么？

感谢帮助。

4

1 回答 1

0

我调查了这个问题，所以：

  1. 在 OpenSea 上列出项目可以使用 API 端点（请参阅 OpenSea 文档和此处）。
  2. OpenSea 列表只能在主网或 Rinkeby 网络上（截至今天没有 Polygon、BSC ......）
  3. Polygon 网络上有很多点击器，它们模拟添加项目、名称、价格。

等待 API V2 OpenSea =((

于 2022-02-08T18:13:03.490 回答