This content originally appeared on DEV Community and was authored by Emanuel Ferreira
In this article I will teach you how to deploy your contract to the Rinkeby Testnet.
To be faster we will use our project from another article: How to create a smart contract to mint an nft
Creating an account and an Ethereum project in Infura
Infura provides instant access over HTTPS and WebSockets to the Ethereum network.
- Create your account (Common Steps).
- Click Ethereum, then create new project.
- Give a name for your project .
- Save your project id.
Initial settings
Returning to the project, let's make the initial settings for our project.
Let's go to the hardhat.config.js file and add an object called network along with another object called rinkeby containing url and accounts.
require("@nomiclabs/hardhat-waffle");
/**
* @type import('hardhat/config').HardhatUserConfig
*/
module.exports = {
solidity: "0.8.3",
networks: {
rinkeby: {
url: "", //Infura url with projectId
accounts: [""] // add the account that will deploy the contract (private key)
},
}
};
Now in url we add the url with the project id provided by Infura and in accounts we add the private address of our wallet.
Note: Be careful with your private key, it gives access to your wallet and will spend its crypto to deploy the contract.
require("@nomiclabs/hardhat-waffle");
/**
* @type import('hardhat/config').HardhatUserConfig
*/
module.exports = {
solidity: "0.8.3",
networks: {
rinkeby: {
url: "https://rinkeby.infura.io/v3/ba900937b83f4883b926713999277b1f", //Infura url with projectId
accounts: ["123456789101112131415"] // add the account that will deploy the contract (private key)
},
}
};
Creating the script to deploy
Now to deploy the smart contract to rinkeby testnet, we are going to make a script with the hardhat that will make it easier for us to upload it with a command.
In the root directory, create a folder called scripts and inside a file called deploy.js
/node_modules
/contracts
/test
/scripts
| - deploy.js
hardhat.config.js
package.json
yarn.lock
Now we're going to modify the file by adding the script below, where I'll explain it line by line.
deploy.js
const hre = require("hardhat"); //import the hardhat
async function main() {
const [deployer] = await ethers.getSigners(); //get the account to deploy the contract
console.log("Deploying contracts with the account:", deployer.address);
const FactoryNFT = await hre.ethers.getContractFactory("FactoryNFT"); // Getting the Contract
const factoryNFT = await FactoryNFT.deploy(); //deploying the contract
await factoryNFT.deployed(); // waiting for the contract to be deployed
console.log("FactoryNFT deployed to:", factoryNFT.address); // Returning the contract address on the rinkeby
}
main()
.then(() => process.exit(0))
.catch((error) => {
console.error(error);
process.exit(1);
}); // Calling the function to deploy the contract
Now to deploy your contract just run this commands:
yarn compile
yarn hardhat run scripts/deploy.js --network rinkeby
result
Deploying contracts with the account: 0xAFEeb469Ce6376979Ea037b4CE6b7172f9018007
FactoryNFT deployed to: 0xF9e6b75cE8da147D4f1d7d2cc597A7A42A645006
This content originally appeared on DEV Community and was authored by Emanuel Ferreira
Emanuel Ferreira | Sciencx (2021-09-17T11:54:02+00:00) How to deploy a Smart Contract to Rinkeby Testnet using Infura and Hardhat. Retrieved from https://www.scien.cx/2021/09/17/how-to-deploy-a-smart-contract-to-rinkeby-testnet-using-infura-and-hardhat/
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