app.vote(1,{ from: accounts[0] }) 给出错误

Question

我正在尝试从特定帐户投票给候选人，例如：app.vote(1,{ from: accounts[0] })。

    truffle console
truffle(development)> accounts
[
  '0xA1d77380Cb26e30F336F7B45EdaFcE49543A4e53',
  '0x48C9ae2AE4f031DDbfE605A56C4B59CAB7b54383',
  '0x232fD7cb05Cd1b2849124466c4b14ff907b42DC5',
  '0xAB6B92ED799DFEBA0d5bf65137Bf2c97682Beae5',
  '0x3679b44250bBE27b287b0c07E6d8D16388bd7494',
  '0xB353311c017ff9b3E20aa52f76F53D20fd6EAfD4',
  '0x596a306BE6FE7bB18DFC9065A4f0a498cD74aF32',
  '0xef277ADa2dc83aF974832D33056B649016c76Ea0',
  '0x96D3ab6192566c74074FC11445B6b4e4640eF6Bd',
  '0x1E9d006DF1e0F9FB013D23aB3702AddcF0119589'
]
truffle(development)> app.vote(1,{ from: accounts[0] })
Thrown:
evalmachine.<anonymous>:0
app.vote(1,{ from: accounts[0] })
^

ReferenceError: app is not defined
    at evalmachine.<anonymous>:0:1
    at sigintHandlersWrap (vm.js:272:15)
    at Script.runInContext (vm.js:127:14)
    at runScript (C:\npm\node_modules\truffle\build\webpack:\packages\core\lib\console.js:222:1)
    at Console.interpret (C:\npm\node_modules\truffle\build\webpack:\packages\core\lib\console.js:237:1)
    at ReplManager.interpret (C:\npm\node_modules\truffle\build\webpack:\packages\core\lib\repl.js:129:1)
    at bound (domain.js:426:14)
    at REPLServer.runBound [as eval] (domain.js:439:12)
    at REPLServer.onLine (repl.js:726:10)
    at REPLServer.emit (events.js:219:5)

谁能告诉我如何从特定帐户投票。

Answer 1

在与你的合约交互之前，你需要先部署它（假设你在你的合约所在的 Truffle 项目中）：

truffle deploy
truffle console
truffle(development)> let app = await YourContract.deployed()
truffle(development)> let accounts = web3.eth.getAccounts()
truffle(development)> app.vote(1,{ from: accounts[0] })

app.vote(1,{ from: accounts[0] }) 给出错误

app.vote(1,{ from: accounts[0] }) is giving error

javascript

ethereum

solidity

web3js

metamask