Daehwa-Rayer-Lee / star-stake

React DApp Tutorial Series

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React, Redux and Authentication iCash Wallet

In addition to Webpack and React, this box adds: react-router, redux and redux-auth-wrapper for authentication powered by a smart contract.

Installation

  1. Install Truffle globally.

    npm install -g truffle
  2. Ensure truffle.js exported JSON has this object

    networks: {
        development: {
            host: "localhost",
            port: 8545,
            network_id: "*" // Match any network id
        }
    }
  3. Run the Ethereum development console with an unlocked account.

    ganache-cli -u 0
  4. Compile and migrate the smart contracts.

    truffle compile
    truffle migrate
  5. Run the webpack server for front-end hot reloading (outside the development console). Smart contract changes must be manually recompiled and migrated.

    // Serves the front-end on http://localhost:3000
    npm run start
  6. Truffle can run tests written in Solidity or JavaScript against your smart contracts. Note the command varies slightly if you're in or outside of the development console.

    truffle test
  7. Jest is included for testing React components. Compile your contracts before running Jest, or you may receive some file not found errors.

    // Run Jest outside of the development console for front-end component tests.
    npm run test
  8. To build the application for production, use the build command. A production build will be in the build_webpack folder.

    npm run build

Login Flow

The overall flow goes something like this:

  • The log in form dispatches an action creator which triggers a POST to the server
  • The server validates login credentials and returns a valid JWT or 401 Unauthorized response as needed
  • The original action creator parses the server response and dispatches success or failure actions accordingly
  • Success actions trigger an update of the auth state, passing along the token and any decoded data from the JWT payload
  • A higher-order authentication component receives the new auth state as props
  • If authentication was successful, the higher-order component renders its child component and passes the auth props down to it
  • Before mounting, the child fetches data from the server using the token it received from its parent wrapper

FAQ

  • How do I use this with the EthereumJS TestRPC?

    It's as easy as modifying the config file! Check out our documentation on adding network configurations. Depending on the port you're using, you'll also need to update line 34 of src/util/web3/getWeb3.js.

  • Why is there both a truffle.js file and a truffle-config.js file?

    truffle-config.js is a copy of truffle.js for compatibility with Windows development environments. Feel free to it if it's irrelevant to your platform.

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React DApp Tutorial Series


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