Sepolia -无返回数据-合同函数

Question

我不会从一个简单的函数中获得任何返回数据，当部署在Sopolia testnet上时，它在VM中可以正常工作。

编译器: 0.8.7；

rpc：https://rpc-sepolia.rockx.com

function gerReferalCode() external returns ( uint256 ) {
    uint256 h;
    do {
        h = _hash(1);
    } while ( referalIsUsed[ h ] );
    referalIsUsed[ h ] = true;
    referalCode[ msg.sender ] = h;
    Data storage d = signings[ h ];
    d.owner = msg.sender;

    return h;
}

在混合中使用相同的合同：

混音VM (伦敦)

input   0x8df...8c783
decoded input   {}
decoded output  {
    "0": "uint256: 3544079616"
}
logs    []

注射提供者( Sepolia )：

input   0x8df...8c783
decoded output   - 
val 0 wei

Web3代码响应：

blockHash
: 
"0x29810da2e36a8ec29db6e3cc50557c0ac3146283acf9231527a295dec6b0b9aa"
blockNumber
: 
2312093
contractAddress
: 
null
cumulativeGasUsed
: 
75924
effectiveGasPrice
: 
2500000007
events
: 
{}
from
: 
"0xbb4896575291881a7bbc0f945ec3bcd402a44794"
gasUsed
: 
75924
logsBloom
: 
"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
status
: 
true
to
: 
"0xbc2bacef89a144acf941d2b24bfe674ede6d832e"
transactionHash
: 
"0x126f380273d8911611d2190bc67c53097d6ee012ed32f349a49786d323f7063b"
transactionIndex
: 
0
type
: 
"0x2"

Answer 1

从可能改变块链状态的函数中获取返回的数据是不可能的。这是稳固性的局限性之一。这就是为什么函数要返回完整的块信息。

如果要获取数据，则需要将函数更改为视图函数，而不是更改块链中的状态。

如果你想试着用后端来做这件事的话，那就去做吧。