IERC721TokenReceiver
Functions
onERC721Received
Handle the receipt of an NFT
The ERC721 smart contract calls this function on the recipient
after a transfer. This function MAY throw to revert and reject the
transfer. Return of other than the magic value MUST result in the
transaction being reverted.
Note: the contract address is always the message sender.
function onERC721Received(address _operator, address _from, uint256 _tokenId, bytes calldata _data)
external
returns (bytes4);
Parameters
| Name | Type | Description |
|---|---|---|
_operator | address | The address which called safeTransferFrom function |
_from | address | The address which previously owned the token |
_tokenId | uint256 | The NFT identifier which is being transferred |
_data | bytes | Additional data with no specified format |
Returns
| Name | Type | Description |
|---|---|---|
<none> | bytes4 | bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")) unless throwing |