如何在松露控制台中獲取所有已發出事件的列表？

我寫了一個非常簡單的智能合約，每次我呼叫它的一個函式時都會發出一個事件：

pragma solidity ^0.8.0;

contract MyContract {

   event Score(
       uint date,
       string player,
       string team
   );

   function goalScored(string memory _player, string memory _team) external {
       emit Score(block.timestamp, _player, _team);
   }
}

然後我使用truffle migrate. 最後我在truffle console. 為此，我使用以下程式碼行載入契約：

MyContract.deployed().then(function(i) { contract=i;})
contract.goalScored('messi','inter')

基本上每次梅西對一支球隊得分時，我都會啟動函式來發出一個得分事件。

這是我的問題：如何視覺化 truffle 控制台中所有事件的列表？

我嘗試了什麼：我使用不同的輸入執行了*goalScored()*函式 4 次，然後我嘗試使用以下命令：

contract.allEvents()

但我得到的只是：

EventEmitter {
 _events: [Object: null prototype] {},
 _eventsCount: 0,
 _maxListeners: undefined,
 [Symbol(kCapture)]: false
}
truffle(development)> Uncaught [Error: The current provider doesn't support subscriptions: HttpProvider] {
 domainEmitter: EventEmitter {
   _events: [Object: null prototype] {},
   _eventsCount: 0,
   _maxListeners: undefined,
   [Symbol(kCapture)]: false
 },
 domainThrown: false
}

您能否提出一種聰明而優雅的方式來實現我的目標？

從松露開發你可以嘗試類似

let c = await MyContract.deployed()
await c.goalScored('a','b')
let events = await c.getPastEvents('Score',{ fromBlock:0, toBlock:'latest'})
events

此外，如果您需要所有事件，您可以使用

c.getPastEvents('allEvents',{ fromBlock:0, toBlock:'latest'})

全松露開發輸入：

migrate 
let c = await Messi.deployed()
await c.goalScored('first','inter')
await c.getPastEvents('allEvents',{fromBlock:0})

範例輸出：

[
{
logIndex: 0,
transactionIndex: 0,
transactionHash: '0x3b09d2d01dd03c5bea61e84cc43529b9676a0be8d895b780aee00a42a7c0971d',
blockHash: '0x05cfc5a9204adb909dd4870ceb39c2376fc894fe06a8d6491888041bc91e1810',
blockNumber: 5,
address: '0x8D595a50a2F4cA295784fC2FFde8De6EE3346ca6',
type: 'mined',
id: 'log_fda64066',
returnValues: Result {
 '0': '1633018291',
 '1': 'first',
 '2': 'inter',
 date: '1633018291',
 player: 'first',
 team: 'inter'
},
event: 'Score',
signature: '0xba74004ad4978cd3d2ecfe8c15e7c5f91bd7da14e199e9ae8638f20f378a7293',
raw: {
 data: '0x000000000000000000000000000000000000000000000000000000006155e1b3000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000000000000000000000000000000000000000000566697273740000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005696e746572000000000000000000000000000000000000000000000000000000',
 topics: [Array]
},
args: Result {
 '0': [BN],
 '1': 'first',
 '2': 'inter',
 __length__: 3,
 date: [BN],
 player: 'first',
 team: 'inter'
}
}]

引用自：https://ethereum.stackexchange.com/questions/110823