ikiran-dev / DECENTRALISED-VOTING-SYSTEM

Dependencies

Install these prerequisites to follow along with the tutorial. See free video tutorial or a full explanation of each prerequisite.

• NPM: https://nodejs.org
• Truffle: https://github.com/trufflesuite/truffle
• Ganache: http://truffleframework.com/ganache/
• Metamask: https://metamask.io/

Step 1. Clone the project

git clone https://github.com/ArchLinuxStudio/election

Step 2. Install dependencies

$ cd election
$ npm install

Step 3. Start Ganache

Open the Ganache GUI client that you downloaded and installed. This will start your local blockchain instance. See free video tutorial for full explanation.

Step 4. Compile & Deploy Election Smart Contract

$ truffle migrate --reset You must migrate the election smart contract each time your restart ganache.

Step 5. Configure Metamask

See free video tutorial for full explanation of these steps:

• Unlock Metamask
• Connect metamask to your local Etherum blockchain provided by Ganache.
• Import an account provided by ganache.

Step 6. Run the Front End Application

$ npm run dev Visit this URL in your browser: http://localhost:3000

If you get stuck, please reference the free video tutorial.

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Notes

1. Use web3.eth.getAccounts() to get accounts now
2. To bootstrap sample truffle project, use command truffle unbox pet-shop

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Deploy to rinkeby test network

1. Run geth node

geth --rinkeby --http --http.api personal,eth,net,web3 --allow-insecure-unlock

This can take dozens of hours, depending on your machine configuration and internet speed.
This will cost you close to 100GB or so of hard drive space.

2. Create a new account

geth --rinkeby account new

3. Attach into geth console

geth --rinkeby attach

And you can do many things in geth console

eth.syncing     #check the syncing status
eth.accounts    #check all accounts
eth.getBalance(eth.accounts[0]) #check account balance
personal.unlockAccount(eth.accounts[0],null,1200)   #unlock a certain accont for 20 minutes

4. Acquire eth from https://www.rinkeby.io/#faucet

Here they require that you have to post a twitter or facebook, which is disgusting.

5. Migrate

truffle migrate --reset --compile-all --network rinkeby

6. Verify deployment

geth --rinkeby attach

var contractAddress = "Your_Contract_Address"
var contractAbi = [Your_ABI_Array] #copy the abi array in build/contracts/Election.json, turn it into one line style
var electionContract = web3.eth.contract(contractAbi)
var electionInstance = electionContract.at(contractAddress)
electionInstance.candidates(1)
electionInstance.vote(1, {from: eth.accounts[0]});