Setting Up an Angular Dapp with Moralis and ExpressJs – Part 2

In this article, we will continue our discussion on setting up an Angular decentralized application (Dapp) using Moralis and ExpressJs. In the previous part, we covered the basics of setting up an Angular project and integrating Moralis for blockchain integration. In this part, we will focus on setting up the backend using ExpressJs for handling server-side logic and API calls.

Setting up ExpressJs for the Backend

ExpressJs is a popular Node.js framework for building backend applications. It provides a robust set of features for handling HTTP requests, routing, and middleware integration. To set up ExpressJs for our Angular Dapp, we need to install it using npm:


npm install express --save


Once ExpressJs is installed, we can create a new file named server.js in our project root directory. This file will serve as the entry point for our backend application. We can use the following code to create a basic ExpressJs server:


const express = require('express');
const app = express();

const PORT = process.env.PORT || 3000;

app.get('/', (req, res) => {
res.send('Welcome to the Angular Dapp backend!');
});

app.listen(PORT, () => {
console.log(`Server is running on port ${PORT}`);
});


With this setup, we have a basic ExpressJs server running on port 3000. We can access it through a browser or an API testing tool like Postman. Next, we will integrate Moralis with our ExpressJs server to handle blockchain-related requests.

Integrating Moralis with ExpressJs

Moralis provides a powerful SDK for interacting with various blockchain networks. We can use it to handle user authentication, fetching blockchain data, and executing smart contracts. To integrate Moralis with our ExpressJs server, we need to install the Moralis SDK using npm:


npm install moralis --save


Once Moralis is installed, we can create a new file named moralisConfig.js in our project root directory. This file will contain the Moralis initialization code and configuration:


const Moralis = require('moralis');

Moralis.initialize("YOUR_APP_ID");
Moralis.serverURL = "YOUR_SERVER_URL";

module.exports = Moralis;


Replace YOUR_APP_ID and YOUR_SERVER_URL with your actual Moralis application ID and server URL. This allows us to initialize the Moralis SDK and use it throughout our backend application.

Conclusion

In this article, we discussed setting up the backend for our Angular Dapp using ExpressJs and integrating Moralis for blockchain interactions. With these components in place, we have a robust foundation for building a decentralized application that can interact with various blockchain networks. In the next part, we will cover integrating the frontend Angular application with our backend and Moralis for creating a seamless user experience.