بلاگ
Metamask: How to use signer details from ethers.js to sign transactions with web3.py
Signing Transactions with Web3.py and Metamask Wallet Using Ethers.js
. (Ethers.js) in conjunction with the popular web3.py library.
In this article,
Step 1: Install Dependencies
First, ensure
`bash
NPM Install Ethers ethers-Web3
`
Step 2: Initialize Ethers.js and Web3.py
Create a New File for Your Dapp’s Initialization Code, E.G., App.js:
`JavaScript
Const Web3 = Require (‘Web3’);
Const ethers = Require (‘Ethers/Web3’);
// Initialize Ethers.js
Const Ethers = New Web3 (new URL (‘
`
Replace Your_project_id with your actual Infa Project ID.
Step 3: Get User’s Metamask Details
The User’s metamask details, you’ll need to connect their wallet to ethers.js using the ethers.connect () method. You
`JavaScript
Const ethersConnect = Require (‘Ethers-Connection’);
// Get the User’s Metamask Wallet Address and Private Key
ethers.connect ({
Accounts: [‘Your_metamask_address’],
}, async (address, privatekey) => {
// use these credentials to sign transactions with web3.py later
});
`
Replace your_metamask_address with your actual metamask address.
Step 4: Sign Transactions Using Web3.py
Now that you have the user’s metamask details, you can use them to sign transactions with web3.py. Create a New File for Your Dapp’s Transaction Processing Code:
`JavaScript
Const Web3 = Require (‘Web3’);
// Get the Signed Address from Ethers.js Connection
Async Function GetsignedAddress (Address, PrivateKey) {
Const web3instance = new web3.web3 ();
Return Await Web3instance.eth.accounts.signtransaction ({
To: Address,
Data: ”, // You can use your transaction details Here
}, privatekey)
.Then ((signedtx) => signedtx.ransaction)
.Then ((signedtxawr) => signedtx.ransaction);
}
module.exports = {getsignedaddress};
`
Argumas, creates a new web3 instance, signs a transaction with the provided details, and returns the raw translation.
Putting It All Together
Here’s an example of how you can use these functions in your Dapp:
`JavaScript
Const app = require (‘./ app’);
// Initialize Ethers.js and Web3.py
Require (‘./ initethers’) (ethers);
const {getsignedaddress} = require (‘./ getsignedaddress’);
module.Exports = async (req, res) => {
Const address = ‘your_metamask_address’;
Const privatekey = ‘your_private_key’;
// Get the Signed Transaction Using Web3.py and Metamask Details
Const signedtx = Await app.getsignedaddress (address, privatekey);
// Send the signed transaction to ethers.js for verification
ethers.connect ({
Accounts: [Address],
}, async (account) => {
Const txhash = Await account.sendtransaction (signedtx);
console.log (transaction sent to $ {txhash.address});
});
};
`
This example assumes you have already initialized the GetsignedAddress Function in your Dapp’s Main File (app.js). You can replace your_metamask_address andyour_private_key with your actual metamask credentials.
Conclusion
Signing transactions with metamask wallets using ethers.js is a straightforward process that leverages web3.py for transaction verification. By following these steps, you’ll be able to intEx your Dapp with Ethereum.js Solutions like Web3.