ERC721URIStorageUpgradeable

Inherits: Initializable, IERC4906, ERC721Upgradeable

ERC-721 token with storage based token URI management.

State Variables

ERC4906_INTERFACE_ID

bytes4 private constant ERC4906_INTERFACE_ID = bytes4(0x49064906);

ERC721URIStorageStorageLocation

bytes32 private constant ERC721URIStorageStorageLocation =
    0x0542a41881ee128a365a727b282c86fa859579490b9bb45aab8503648c8e7900;

Functions

_getERC721URIStorageStorage

function _getERC721URIStorageStorage() private pure returns (ERC721URIStorageStorage storage $);

__ERC721URIStorage_init

function __ERC721URIStorage_init() internal onlyInitializing;

__ERC721URIStorage_init_unchained

function __ERC721URIStorage_init_unchained() internal onlyInitializing;

supportsInterface

Query if a contract implements an interface

Interface identification is specified in ERC-165. This function uses less than 30,000 gas.

function supportsInterface(bytes4 interfaceId)
    public
    view
    virtual
    override(ERC721Upgradeable, IERC165)
    returns (bool);

Parameters

Name	Type	Description
`interfaceId`	`bytes4`

Returns

Name	Type	Description
`<none>`	`bool`	`true` if the contract implements `interfaceID` and `interfaceID` is not 0xffffffff, `false` otherwise

tokenURI

A distinct Uniform Resource Identifier (URI) for a given asset.

Throws if _tokenId is not a valid NFT. URIs are defined in RFC 3986. The URI may point to a JSON file that conforms to the "ERC721 Metadata JSON Schema".

function tokenURI(uint256 tokenId) public view virtual override returns (string memory);

_setTokenURI

Sets _tokenURI as the tokenURI of tokenId. Emits IERC4906-MetadataUpdate.

function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual;

Structs

ERC721URIStorageStorage

Note: storage-location: erc7201:openzeppelin.storage.ERC721URIStorage

struct ERC721URIStorageStorage {
    mapping(uint256 tokenId => string) _tokenURIs;
}

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