问题描述
我是 web3 的新手,一般来说都是 solidity,但我一直在关注有关从 web3 调用合同方法的网络文档
我的solidity智能合约:
pragma solidity ^ 0.5.0;
contract Royalties {
string public name = "RoyaltiesContract";
uint public nextArtistId = 1;
uint public nextSongId = 0;
uint public nextCollabId = 0;
mapping(uint => Artist) public Artists;
struct Artist {
uint id;
string ArtistName;
address ArtistAddress;
}
function createArtist(string memory ArtistName,address Artistaddress) public returns(uint id,string memory Name,address Address) {
Artists[nextArtistId] = Artist(nextArtistId,ArtistName,Artistaddress);
nextArtistId++;
return(nextArtistId,Artistaddress);
}
function getArtist(uint id) view public returns(uint,string memory,address){
return(Artists[id].id,Artists[id].ArtistName,Artists[id].ArtistAddress);
}
}
完成所有配置后我的 web3 代码:
shoot(royalties) {
const createArtist = royalties.methods.createArtist("DMX","0x518251583591f3DE330Eb539AB64b6E95C1EE5c5").call().then(
function(result){
console.log(result)
},royalties.methods.getArtist(1).call({defaultBlock :'latest'}).then(console.log)
)
}
记住一个 id:1 的艺术家已经存在,上面的 shot() 函数现在被触发,第一个 console.log 是 createArtist 方法返回的结果与智能合约一样:
Result {0: "2",1: "DMX",2: "0x518251583591f3DE330Eb539AB64b6E95C1EE5c5",id: "2",Name: "DMX",Address: "0x518251583591f3DE330Eb539AB64b6E95C1EE5c5"}
但是第二个 console.log 是 getArtist(1) 方法返回记住一个已经有 id:1 的艺术家:
Result {0: "0",1: "",2: "0x0000000000000000000000000000000000000000"}
感谢您花时间阅读我的问题。