Question

我正在尝试通过将一些以太币发送到合同中，更改要拒绝的状态并基本上将退款（转移合同余额）发回给请求者来处理solidity文档中突出显示的提款方式。合同在混音中部署良好，并且大多数功能和吸气剂都在起作用。但是，当我尝试在混音中调用退款功能时，我在eth_sendRawTransaction上收到了一个json-rpc错误，说不出话了。我试图在ganache 1.3上使用在带有metamask的chrome上注入web3来做到这一点。有谁知道我如何使它工作？谢谢！

pragma solidity >=0.5.4 <0.6.0;

contract TestContract {
  uint public value;
  address payable public requestor;
  enum State { Requested, Approved, Rejected, Completed }
  State public state;

  mapping (address => uint) pendingWithdrawals;

  constructor(
    address payable _requestor
  ) public payable {
    requestor = _requestor;
    state = State.Requested;
    value = msg.value;
  }

  modifier onlyRequestor() {
    require(
      msg.sender == requestor,
      "Only requestor can call this."
    );
    _;
  }

  modifier inState(State _state) {
    require(
      state == _state,
      "Invalid state."
    );
    _;
  }

  event Rejected();
  event Approved();
  event DataReceived();

  function reject() public inState(State.Requested) {
    emit Rejected();
    state = State.Rejected;
    pendingWithdrawals[requestor] += address(this).balance;
  }

  function refund() public onlyRequestor inState(State.Rejected) {
    uint amount = pendingWithdrawals[msg.sender];

    pendingWithdrawals[msg.sender] = 0;
    msg.sender.transfer(amount);
  }

团结合同退出天然气错误

0 个答案: