Update ERC721 guide for 4.0 (#2630)

2021-04-16 10:49:53 +08:00
parent 3157aff844
commit 538b6d21b1
1 changed files with 2 additions and 1 deletions
--- a/docs/modules/ROOT/pages/erc721.adoc
+++ b/docs/modules/ROOT/pages/erc721.adoc
@ -17,9 +17,10 @@ Here's what a contract for tokenized items might look like:
 pragma solidity ^0.8.0;

 import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
+import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
 import "@openzeppelin/contracts/utils/Counters.sol";

-contract GameItem is ERC721 {
+contract GameItem is ERC721URIStorage {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;