坚固函数返回ethersjs/hardhat上的空数组，而不是在混音中返回吗？

Question

嗨，我正在学习坚固的性能，我有一个问题，即一个功能似乎可以在混音中起作用，但对Etherjs/hardhat不起作用？ （ABI也一样）

代码：

function getOwnCards() external view returns(uint[] memory _cards) {
    uint[] memory result = new uint[](userToCardsCount[msg.sender]);
    uint counter = 0;
    for (uint i = 0; i < cards.length; i++) {
        if (cardIdToUser[i] == msg.sender) {
            result[counter] = cards[i];
            counter++;
        }
    }
    return result;
}

混音IDE中的结果：

    0:
uint256[]: _cards 62180033277912311002789072835418559502128313467724667052439679862541172075622,31220469133090072532919887703804680190688655804240516732101690706958488894069,35568354368614544905898949308353469583138320508979990175291873927902398948450

Ethersjs中的结果：

[]

Fe代码：

const getCards = async () => {
    if (typeof window.ethereum !== 'undefined'){
        //@ts-ignore 
        const provider = new ethers.providers.Web3Provider(window.ethereum) 
        const contract = new ethers.Contract(cardsAddress, Cards.abi, provider)
        try {
            const data = await contract.getOwnCards()
            console.log(data)
        } catch (error) {
            console.log(error)
        }
    }
}

Answer 1

解决方案1：

更改味精为给定参数：

function getCardsByOwner(address user) external view returns(uint[] memory _cards) {
    uint[] memory result = new uint[](userToCardsCount[user]);
    uint counter = 0;
    for (uint i = 0; i < cards.length; i++) {
        if (cardIdToUser[i] == user) {
            result[counter] = cards[i];
            counter++;
        }
    }
    return result;
}

解决方案2：

在fe中呼叫函数正确

const getCards = async () => {
    if (typeof window.ethereum !== 'undefined'){
        //@ts-ignore 
        const provider = new ethers.providers.Web3Provider(window.ethereum) 
        const signer = provider.getSigner()
        const contract = new ethers.Contract(cardsAddress, Cards.abi, signer)
        try {
            const data = await contract.getCardsByOwner(signer.getAddress())
            console.log(await contract.getOwnCards())
            console.log(data)
        } catch (error) {
            console.log(error)
        }
    }
}