Decentralize ToDo List

Project Setup

• Create folder.
• Fire truffle init to initialize truffle project.
• Initialize git repository with git init.
• Add package.json file to this project and add below content.

  
     "name": "dec-todo",
     "version": "1.0.0",
     "description": "Blockchain Todo List Powered By Ethereum",
     "main": "truffle-config.js",
     "directories": {
         "test": "test"
     },
     "scripts": {
         "dev": "lite-server",
         "test": "echo \"Error: no test specified\" && sexit 1"
     },
     "author": "[email protected]",
     "license": "ISC",
     "devDependencies": {
         "bootstrap": "4.1.3",
         "chai": "^4.1.2",
         "chai-as-promised": "^7.1.1",
         "chai-bignumber": "^2.0.2",
         "lite-server": "^2.3.0",
         "nodemon": "^1.17.3",
         "truffle": "5.0.5",
         "web3": "^1.0.0-beta.55",
         "truffle-contract": "3.0.6"
     }
  
  

• Add .gitignore and add below content.

   See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
   dependencies
  node_modules
  .pnp
  pnp.js
  
   testing
  coverage
  
   production
  build
  
   misc
  DS_Store
  env
  env.local
  env.development.local
  env.test.local
  env.production.local
  
  pm-debug.log*
  arn-debug.log*
  arn-error.log*
  

• npm install to install dependencies.
• Add this snippet to solidity file.

  / SPDX-License-Identifier: MIT
  ragma solidity >=0.4.22 <0.9.0;
  

• Add below snippet in truffle-config.js.

  odule.exports = {
   networks: {
     development: {
       host: "127.0.0.1",
       port: 7545,
       network_id: "*" // Match any network id
     },
   },
   contracts_directory: './src/contracts/',
   contracts_build_directory: './src/abis/',
   compilers: {
     solc: {
       optimizer: {
         enabled: true,
         runs: 200
       },
       evmVersion: "petersburg"
     }
   }
  
  

• After adding .sol files.
• we need to do migrations in order to deploy on blockchain