显示合约 A 中合约 B、C 和 D 的交易

使用事件发射：确保合约 B、C 和 D 每次调用其函数时都会发出事件.

创建包装函数：在合约 A 中，为要在合约 B、C 和 D 中调用的每个函数创建包装函数. 这些函数应记录交易细节.

维护交易日志：在合约 A 中，维护映射或数组，以记录与每个合约进行的交易.

要在合约 A 中显示合约 B、C 和 D 各自内部交易下的交易，您需要确保每笔交易都是通过这些合约中引发事件的方法进行的.

前端跟踪：如果您需要在前端接口上显示这些内部交易，请查询合约 A 发出的事件或合约中维护的交易日志.

使用delegatecall或call：当合约 A 与合约 B、C 和 D 交互时，使用delegatecall或call方法确保保留上下文并记录交易.

To display transactions for contracts B, C, and D under their respective internal transactions in contract A on the Polygon network, you can follow a structured approach that includes fetching, decoding, and organizing transaction data. Below are the enhanced steps based on general practices in blockchain development:

Steps to Display Transactions

1. Set Up Your Development Environment:

   • Ensure you have access to the Polygon network through a provider like Infura or Alchemy.
   • Use JavaScript libraries such as Web3.js or Ethers.js to facilitate interaction with the blockchain.

2. Fetch Transactions:

   • You can retrieve transaction data related to contracts B, C, and D using APIs provided by services like Alchemy or directly querying the Polygon blockchain. For example, you can use the getPastEvents method if you're working with event logs.

   Example JavaScript Code:

   const contractB = new web3.eth.Contract(abiB, 'contractB_address');
   const eventsB = await contractB.getPastEvents('AllEvents', { fromBlock: 0, toBlock: 'latest' });
   

3. Decode Transaction Data:

   • Use the ABI of each contract to decode the input data of transactions. This is essential for understanding what each transaction does.

   Example Code Snippet:

   const decodedInput = web3.eth.abi.decodeParameters(['type1', 'type2'], tx.input);
   

4. Group Transactions by Contract:

   • Organize the fetched transactions based on their respective contracts (B, C, D). This can be done using a simple data structure like an object or a map.

5. Display Transactions in Contract A:

   • Create a user interface component that displays these transactions grouped by their respective contracts. You can use frameworks like React or Vue.js for building interactive UIs.

Example Implementation

Here’s an example of how you might implement this in JavaScript:

const contractAddresses = {
    B: '0xContractBAddress',
    C: '0xContractCAddress',
    D: '0xContractDAddress'
};

async function fetchAndDisplayTransactions() {
    const transactions = []; // Assume this is populated with fetched transactions
    const groupedTransactions = { B: [], C: [], D: [] };

    transactions.forEach(tx => {
        if (tx.to === contractAddresses.B) {
            groupedTransactions.B.push(tx);
        } else if (tx.to === contractAddresses.C) {
            groupedTransactions.C.push(tx);
        } else if (tx.to === contractAddresses.D) {
            groupedTransactions.D.push(tx);
        }
    });

    console.log('Transactions for Contract B:', groupedTransactions.B);
    console.log('Transactions for Contract C:', groupedTransactions.C);
    console.log('Transactions for Contract D:', groupedTransactions.D);
}

Conclusion

By implementing these steps, you can effectively display transactions for contracts B, C, and D under their respective internal transactions in contract A on the Polygon network. This approach utilizes existing APIs and libraries to streamline data retrieval and presentation while ensuring clarity in your application’s user interface.