Metamask: How to use signer details from ethers.js to sign transactions with web3.py
By signing transactions with Web3.Py and Metamans using Ethers.Js
As part of a decentralized application, it is accustomed to asking users to sign deal with Metaska wallets. To facilitate this process, you will need to use an external wallet solution, such as Ethereum.Js (Ethers.Js) in combination with the popular web3. PY library.
In this article, we will study how to use Metamark information from Ethers.Js to sign transactions with Web3.py DAPP.
Step 1: Install addictions
First, make sure you have the necessary addictions installed:
`Bash
NPM installs eths ethers-web3
Step 2: Initialize Ethers.Js and Web3.PY
Create a new file for DAPP Initialization Code likeapp.js:
JavaScript
Const web3 = requires ('Web3');
Const ethers = requires ('ether/web3');
// initializes ethers.js
Const Ethers = New Web3 (new URL ('
Replaceyour_project_idwith your infura project ID.
Step 3: Get user Metameka information
To obtain user metamark information, you will need to add a wallet with a can. To simplify this process, you can use a library such as "Ethers-Single:
JavaScript
Const EtherConnect = requires ('Ether-Connection');
// Get the user's Metask Waller and private keyboard address
Ethers.connect ({
Accounts: ['your_metark_address'],
}, async (address, Privatekey) => {
// Use these credentials to sign transactions later with Web3
});
Replace your_metamark_address's with your Metask address.
Step 4: Sign Transaction using Web3.PY
Now that you have information about the user metamark, you can use them to sign the Web3.py transactions. Create a new file for DAPP transaction processing code:
JavaScript
Const web3 = requires ('Web3');
// Get a signed address from Ethers.js Connection
Function ASYNC GetsignAdaddress (address, private key) {
Const Web3instance = New Web3.Web3 ();
Return awaits Web3instance.etth.account.signtranstion ({
to: address,
Data: ', // You can use the transaction information here
}, Private key)
.THEN ((SignatureStx) => SignedStx.rawtranstion)
.
}
Module.exports = {Getcasneddress};
This feature accepts the user's metamish address and private key as arguments, creates a new Web3 instance, signs the transaction with the information provided and returns the gross transaction.
all by putting together
Here is an example of how you can use these features DAPP:
JavaScript
Constp = requires ('./ Application');
// initializes ethers.js and web3
Request ('./ Initators') (ether);
Const {GetStednedDDress} = Requires ('./ GetsignNedDDress');
module.exports = async (req, res) => {
consistently address = 'your_metamark_address';
Const Privatekey = 'Your_private_Key';
// Get a signed transaction using Web3.PY and METask Information
Constanedtx = wait for app.getsignaddress (address, Privatekey);
// Send a signed transaction to ethers.js for checking
Ethers.connect ({
Accounts: [Address],
}, async (sequel) => {
Const Txhash = Expect Account.Sendtranstion (Signx);
Console.log ("transaction sent to $ {txhash.address});
});
};
`
In this example, it is assumed that you have already initiated the Gitstedaddress in the main DAPP file (app.JS). You can replace theYour_Metamark_addressand your_private_key with real metamark credentials.
Conclusion
When signing transactions with metamark wallets using Ethers.Yes is a simple process that uses Web3.Py to check the transaction. You will be able to integrate these activities to the DAP with ethereum.Js solutions such as Web3.
