Sending an ERC721 token from a smart contract to a user address

NFT
1

Hey everyone,

I’m working on a smart contract that holds NFTs and I want to create a function that lets me, as the owner, send these NFTs to other addresses. I’ve got most of the code written, but I’m running into a problem.

Here’s what I’ve got so far:

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";

contract NFTHolder {
    function sendNFT(
        address nftContract,
        uint256 tokenId,
        address recipient
    ) external onlyOwner {
        IERC721(nftContract).safeTransferFrom(
            address(this),
            recipient,
            tokenId
        );
    }
}

The issue is that when I try to compile this, I get an error saying it can’t find the safeTransferFrom function in IERC721. Am I missing something obvious here? How can I fix this so I can transfer the NFT from my contract to a user’s address?

Any help would be appreciated!

2

hey kai29! that’s a pretty cool project you’ve got going there. i’m not an expert, but i’ve dabbled with nfts a bit and might have a suggestion.

have you tried using the regular transferFrom function instead of safeTransferFrom? i remember running into a similar issue and switching to transferFrom fixed it for me. it might look something like this:

IERC721(nftContract).transferFrom(address(this), recipient, tokenId);

just a thought! if that doesn’t work, maybe double-check your openzeppelin imports? sometimes those can be tricky.

btw, what kind of nfts are you working with? sounds like an interesting project!

3

The problem likely stems from using an outdated IERC721 interface. To resolve this, you should import the IERC721 interface from OpenZeppelin’s latest contracts. Replace your current import with:

import '@openzeppelin/contracts/token/ERC721/IERC721.sol';

This updated interface includes the safeTransferFrom function. Additionally, ensure you’re using a recent version of OpenZeppelin contracts in your project’s dependencies.

If the issue persists, you might need to explicitly approve the transfer first:

IERC721(nftContract).approve(recipient, tokenId);
IERC721(nftContract).safeTransferFrom(address(this), recipient, tokenId);

This approach should allow your contract to successfully transfer NFTs to user addresses.

4

yo kai29, i’ve dealt w/ this before. the issue is probably ur IERC721 interface. u need to import IERC721 from ‘@openzeppelin/contracts/token/ERC721/IERC721.sol’ instead. that should have the safeTransferFrom function. if ur still stuck, lemme kno and i can try to help more!