IERC721Receiver

contract IERC721Receiver

Interface for any contract that wants to support safeTransfers from ERC721 asset contracts.

Source: token/ERC721/IERC721Receiver.sol

Index

• onERC721Received

Reference

Functions

• onERC721Received

  abstract function onERC721Received(address operator, address from, uint256 tokenId, bytes data) public returns (bytes4)

  ---

  The ERC721 smart contract calls this function on the recipient after a `safeTransfer`. This function MUST return the function selector, otherwise the caller will revert the transaction. The selector to be returned can be obtained as `this.onERC721Received.selector`. This function MAY throw to revert and reject the transfer. Note: the ERC721 contract address is always the message sender., Handle the receipt of an NFT.

  Parameters:

  operator - The address which called `safeTransferFrom` function

  from - The address which previously owned the token

  tokenId - The NFT identifier which is being transferred

  data - Additional data with no specified format

  Returns:

  `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`