Signature of the transaction using the web 3.py and metamask portfolio using Ethers.js
In order to create a decentralized application, it is common to ask users to sign transactions using their Metamask portfolios. To facilitate this process, you will use an external portfolio solution such as Ethereum.js (etters.js) in conjunction with the popular web3.
In this article, we will examine how to use the Metamask details of Ether.js to sign transactions using web3.py in your DAPP.
Step 1: Install dependence
First of all, make sure that the necessary dependencies are installed:
`Bash
Ethers-Web3 NPM Ethers Installation
'
Step 2: Initialize eeters.js and web3.py
Create a new file for the DAPP initialization code, for example. "App.js":
Javascript
Const web3 = require ('web3');
Const Ethers = require ('etters / web3');
// Initialize eetters.js
Const Ethers = New Web3 (New URL ('
'
ReplaceYour_Project_ID ‘for your real infura project.
Step 3: Get the details of the Metamask user
To obtain details on the user’s metama, you must connect them to their wallet with ETS.JS using the method `ets.connect () '. You can use a library like "Etsher-Connection" to simplify this process:
Javascript
Const Ethersconnect = require ("ether cons");
// Get your metamask portfolio address and the private key
Ethers.Connect ({{
Accounts: ['your_metamask_address',
}, async (address, privatekey) => {
// use this identification information to sign transactions using web3.py later
});
'
Replaceyour_memamask_address’ for your real metamascus address.
Step 4: signature transactions using web3.py
Now that you have details on the user metamascus, you can use them to sign transactions using web3.py. Create a new file for the DAPP transactions processing code:
`Javascript
Const web3 = require ('web3');
// Get the signed address of the Ethers.js connection
Asynchronous function getsignedaddress (address, privatekey) {
Const web3instance = new web3.web3 ();
Back to wait web3instance.eth.accoun.signtransAction ({
To: address,
Data: '', // The details of the transaction can be used here
}, PrivateKey)
.Then (((signeded) => signededtx.rawtransaction)
.Then ((Signedtxraw) => Signedtx.rawtransain);
}
Export module = {getsignedaddress};
'
This feature takes the Metamascus address of the user and a private key as arguments, creates a new instance of web3, signs the transaction with the details provided and returns a gross transaction.
Assembly of all this
Here is an example of how you can use these features in your DAPP:
Javascript
Const app = require ('./ app');
// Initialize eeters.js and web3.py
Require (".
Const {getsignaDaddress} = require ('.
module. Exports = async (req, res) => {
Const Address = 'Your_MemaMask_Address';
Const SloateKey = 'Your_Private_Key';
// Get a signed transaction using web3.py and metamascus detail
Const signedx = Age App.Getsignedaddress (Address, PrivateKey);
// Send a transaction signed by Ethers.js to check
Ethers.Connect ({{
Accounts: [Address],
}, async (account) => {
Const txhash = Ate Cance.sendtransAction (Signttx);
Console.log (transaction sent to $ {txhash.address ”);
});
};
`'
This example assumes that you have already initializedGetignigedaddress’ in the main DAPP file (app.js). You can replace your_memamask_address' to your_private_key with your real metamask identification information.
Conclusion
The signature of transactions with Metamask portfolios using ETERS.JS is a direct process that uses Web3.PY to check transactions. According to these steps, you can integrate your DAPP solutions with Ethereum.js as a web3.
