Building Your First Angular-Truffle DApp: A Step-by-Step Guide

Dec 13, 2021 | Blockchain

Welcome to the world of decentralized applications! In this blog post, we will walk through the process of setting up an Angular-Truffle starter app, which allows you to write, compile, and deploy smart contracts on the Ethereum blockchain using Angular 4. Ready to dive in? Let’s get started!

Project Overview

This project is an Angular 4 application integrated with Truffle, a development environment for Ethereum. With this setup, you can interact with the Ethereum blockchain seamlessly. The project was created using Angular CLI, version 1.0.0.

Demo

Create a coin with an initial supply and send an amount to your Ethereum wallet address. Here’s a glimpse of what you’ll accomplish:

Demo

How to Use This Project

There are two main parts to get this project running smoothly. Let’s break it down:

Part 1: Setting Up the Project

  1. Clone the repository: git clone https://github.com/Nikhil22/angular-truffle-starter-dapp.git
  2. Navigate to the project directory: cd angular-truffle-starter-dapp
  3. Install dependencies: npm install

Part 2: Running the Application

Make sure you have Angular CLI installed. For that, use:

npm install -g @angular/cli

If you’re new, install ganache-cli to run a local blockchain RPC server:

npm install -g ganache-cli

Now, run ganache-cli in a new terminal tab. You will also need to connect to an Ethereum client. A great tool for this is MetaMask. Be sure to set your MetaMask network to Localhost 8545 to avoid browser errors.

Executing Your Application

In your original terminal tab, run the following commands:

  1. Compile your contracts: truffle compile
  2. Deploy contracts: truffle migrate
  3. Serve the application: ng serve

Now navigate to http://localhost:4200. The app will reload automatically if you make any changes.

Code Scaffolding and Building Your Project

You can create new components with:

ng generate component component-name

For building the project, use:

ng build

This will store the artifacts in the dist directory. To prepare for production, use the -prod flag.

Testing Your Application

To run unit tests, use:

ng test

For smart contract tests, use:

truffle test

End-to-end tests can be run with:

ng e2e

Before these tests, ensure the application is being served using ng serve.

Troubleshooting Tips

  • Make sure that your MetaMask is set to the right network, or you’ll encounter errors.
  • If you face compilation issues, ensure all dependencies are correctly installed.
  • Check the browser console for any errors to identify where things may have gone wrong.

For more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

Future Directions

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.

Happy coding and welcome to the decentralized web!

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