*!
When designing a decentralized program, it is common to require users to sign operations with their MetamKK wallets. To facilitate this process, you will need to use an external cash solution, such as Ethereum.js (Ethers.js) along with the popular Web3.py Library.
In this article, we will examine how to use Ethers.js Metamk data to sign Operations with Web3.py Your DAPP.
Step 1: Install addictions
First of all, make sure you have the necessary addictions:
`Bash
NPM to install ether ether-web3
`
Step 2: Initialize Ethers.js and Web3.py
Create a new DAPP initiation code file such as App.Js:
`Javascript
Const Web3 = Require (‘Web3’);
Const Ethers = Require (‘Ethers/Web3’);
// Initiate Ethers.js
CONST ETERS = NEW WEB3 (new URL (‘
`
Change your_Prreat_id on your actual infura project ID.
Step 3: Get user metamascous information
You will need to connect their wallet to Ethers.js to get the user Metamask data using Ethers.connect (). You can use a library such as Ethers-Connection to simplify this process:
`Javascript
CONST ETERSCONNECT = Require (‘Ethers Connector’);
// Get the user’s Metamask wallet address and a private key
Ethers.connect ({{{{{
Accounts: [‘your_metamk_address’],
}, async (address, private) => {{{
// Use these credentials to sign operations with Web3.py later
});
`
Change your_Metamask_address at your actual Metamask address.
Step 4: Sign operations using Web3.py
Now that you have a user’s MetamK information, you can use them to sign operations using Web3.py. Create a new DAPP Operations Processing Code:
`Javascript
Const Web3 = Require (‘Web3’);
// Get a signed address from Ethers.js connection
Async’s feature of getignedaddress (address, private) {
CONST web3instance = new web3.web3 ();
return wait for web3instance.eth.accouns.signtransaction ({{{{{{{{{{{{{{{{{{{{{{{{{{{{
to: address,
Data: ”, // here you can use your operation information here
}, private)
.Then ((sign) => sir srindx.RawtransACTION)
.Then ((signatxraw) => sir sirwtx.RawtransACTION);
}
module.exports = {getsignedddress};
`
This feature refers to the user’s metamok address and a private key as an argument, creates a new copy of the Web3, signs an operation with the information provided and returns the raw operation.
To put everything together
Here’s an example of how you can use the following features with your Dapp:
`Javascript
Const app = Require (‘/ App ‘);
// Initial Ethers.js and Web3.py
Require (‘./ insers’) (ether);
CONST {getsigadddrss} = Require (‘/ GetSIPIGEDDDRESS ‘);
Module.Exports = Async (Req, Res) => {
CONST address = ‘your_metamask_address’;
constvey = ‘your_private_Key’;
// Get Signed Operation using Web3.py and Metamask information
CONST SIR SRINTX = Wait for App.GetsigaddDRESS (address, private);
// Send the Signed Operation Ethers.js to check
Ethers.connect ({{{{
Accounts: [address],
}, async (account) => {
CONST TXHASH = wait for account.SendransACTION (sign);
console.log (Operation sent $ {txhash.address});
});
};
`
This example assumes that you have already initiated the GetSIVIGEDDDRESS feature in the main Dapp file (App.js). You can replace your_metamask_address and your_private_key with your actual Metamk credentials.
Conclusion
Signing Operations using Metamask wallets using Ethers.js is a simple process that uses web3.py operations. By performing these steps, you will be able to integrate Dapp with Ethereum.JS solutions such as Web3.
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