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Step 5: Create Migrations

Open your migrations file called 2_deploy_contracts.js and replace Sample with Token

var Token = artifacts.require('./Token.sol')
let _ = '        '

module.exports = (deployer, helper, accounts) => {

  deployer.then(async () => {
    try {
      // Deploy Token.sol
      await deployer.deploy(Token)
      let token = await Token.deployed()
      console.log(_ + 'Token deployed at: ' + token.address)

    } catch (error) {
      console.log(error)
    }
  })
}

Import the Metadata at the top of the file then duplicate the token deployment code and replace it with Metadata so Metadata comes first. Then modify the Token deploy parameters to match the constructor arguments.

var Metadata = artifacts.require('./Metadata.sol')
var Token = artifacts.require('./Token.sol')

let _ = '        '

module.exports = (deployer, helper, accounts) => {

  deployer.then(async () => {
    try {
      // Deploy Metadata.sol
      await deployer.deploy(Metadata)
      let metadata = await Metadata.deployed()
      console.log(_ + 'Metadata deployed at: ' + metadata.address)

     // Deploy Token.sol
      await deployer.deploy(Token, 'Token Name', 'Token Symbol', metadata.address)
      let token = await Token.deployed()
      console.log(_ + 'Token deployed at: ' + token.address)

    } catch (error) {
      console.log(error)
    }
  })
}

To run the migration first begin a local testnet with truffle in another terminal window

$ yarn develop
Truffle Develop started at http://127.0.0.1:9545/

Accounts:
(0) 0x627306090abab3a6e1400e9345bc60c78a8bef57
(1) 0xf17f52151ebef6c7334fad080c5704d77216b732
(2) 0xc5fdf4076b8f3a5357c5e395ab970b5b54098fef
(3) 0x821aea9a577a9b44299b9c15c88cf3087f3b5544
(4) 0x0d1d4e623d10f9fba5db95830f7d3839406c6af2
(5) 0x2932b7a2355d6fecc4b5c0b6bd44cc31df247a2e
(6) 0x2191ef87e392377ec08e7c08eb105ef5448eced5
(7) 0x0f4f2ac550a1b4e2280d04c21cea7ebd822934b5
(8) 0x6330a553fc93768f612722bb8c2ec78ac90b3bbc
(9) 0x5aeda56215b167893e80b4fe645ba6d5bab767de

Private Keys:
(0) c87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3
(1) ae6ae8e5ccbfb04590405997ee2d52d2b330726137b875053c36d94e974d162f
(2) 0dbbe8e4ae425a6d2687f1a7e3ba17bc98c673636790f1b8ad91193c05875ef1
(3) c88b703fb08cbea894b6aeff5a544fb92e78a18e19814cd85da83b71f772aa6c
(4) 388c684f0ba1ef5017716adb5d21a053ea8e90277d0868337519f97bede61418
(5) 659cbb0e2411a44db63778987b1e22153c086a95eb6b18bdf89de078917abc63
(6) 82d052c865f5763aad42add438569276c00d3d88a2d062d36b2bae914d58b8c8
(7) aa3680d5d48a8283413f7a108367c7299ca73f553735860a87b08f39395618b7
(8) 0f62d96d6675f32685bbdb8ac13cda7c23436f63efbb9d07700d8669ff12b7c4
(9) 8d5366123cb560bb606379f90a0bfd4769eecc0557f1b362dcae9012b548b1e5

Mnemonic: buddy drum hawk truck taxi dish card medal sketch shallow intact stool

⚠️  Important ⚠️  : This mnemonic was created for you by Truffle. It is not secure.
Ensure you do not use it on production blockchains, or else you risk losing funds.

truffle(develop)>

Run the migration from the original window with the local test network to make sure there are no errors

$ yarn migrate --network develop --reset
Using network 'develop'.

Running migration: 1_initial_migration.js
  Deploying Migrations...
  ... 0x6baaa7955d7815f8629b969c7a33da9ee5d13657e623c19fd0f9f592a8d68e87
  Migrations: 0x8cdaf0cd259887258bc13a92c0a6da92698644c0
Saving successful migration to network...
  ... 0xd7bc86d31bee32fa3988f1c1eabce403a1b5d570340a3a9cdba53a472ee8c956
Saving artifacts...
Running migration: 2_deploy_contracts.js
  Running step...
  Deploying Metadata...
  ... 0xed77a8f6e9e3157a9166dbafab94308b470e2d1679e6b3f0946e2534da02b461
  Metadata: 0x345ca3e014aaf5dca488057592ee47305d9b3e10
        Metadata deployed at: 0x345ca3e014aaf5dca488057592ee47305d9b3e10
  Deploying Token...
  ... 0xff932f6634ac4fb800abd8e3421564013397edaa1d0701a28744d28e02c1998c
  Token: 0xf25186b5081ff5ce73482ad761db0eb0d25abfbf
        Token deployed at: 0xf25186b5081ff5ce73482ad761db0eb0d25abfbf
Saving successful migration to network...
  ... 0x059cf1bbc372b9348ce487de910358801bbbd1c89182853439bec0afaee6c7db
Saving artifacts...

If you get strange errors it's sometimes good to delete the build folder that truffle makes when compiling or migrating, or just add the --reset flag to the command.

rm -r ./build

Commit your changes

git add . && git commit -m 'Step 5: Create Migrations'

Go to step 6