Ethereum Example Platform

Sample JavaScript platform for building applications with Ethereum Solidity smart contracts.

Requirements

To run this demo locally, you actually don't need any full Ethereum library, just Node.JS. However you cannot upload smart contracts to a live blockchain

For live deployments get either eth or geth or whatever SDK you prefer.

Setup

• git clone https://[email protected]/scm/et-si-bc/blockchain-academy-ethereum-platform.git
• cd blockchain-academy-ethereum-platform/
• npm install
• (Optional) npm install truffle -g

Building and the frontend

1. npm run testrpc to start a test blockchain instance
2. First run npm run compile, then run npm run migrate to deploy the contracts onto your network of choice (default "development").
3. Then run npm run dev to build the app via webpack and serve it on http://localhost:8080

Deploying to a live Blockchain

@TODO use geth or eth

Scripts

Run npm run <command>:

• lint: Lint code
• build: Builds application
• dev: Serves application
• serve: Serves application
• testrpc: Runs a test ethereum blockchain
• test: Runs JS and SOL tests
• compile: Compiles SOL smart contracts
• deploy: Deploys smart contracts to blockchain

Common Errors

• Error: Can't resolve '../build/contracts/MetaCoin.json'

This means you haven't compiled or migrated your contracts yet. Run npm run compile and npm run migrate first.

Full error:

ERROR in ./app/main.js
Module not found: Error: Can't resolve '../build/contracts/MetaCoin.json' in '/Users/tim/Documents/workspace/Consensys/test3/app'
 @ ./app/main.js 11:16-59