Build a Crypto Currency Portfolio App With Ruby on Rails

Generate a home controller and index view, run the Rails development server, and replace the default page with a hello world app, illustrating MVC and embedded Ruby in views.

Create an about page in your rails app by adding a view in home, configuring a route, and defining an about action in the home controller.

Explore how application.html.erb acts as the shared layout, using yield to inject page content across all views. See how embedded Ruby, css, javascript, and csrf load on every page.

Create and render a Rails partial to keep code clean and reusable, using an underscore-prefixed file and render to include it on the yield page.

Learn to integrate Bootstrap CSS into a Rails app by installing the bootstrap-sass gem (version 3.x), updating app/assets stylesheets and JavaScript, and restarting the server to apply the framework.

Build a mobile-ready bootstrap navbar by adding a container, customizing the brand and links, and removing unused search and dropdown elements, then integrate into your Rails app.

Learn to integrate the coinmarketcap api into a ruby on rails crypto portfolio app, fetch json data for currencies, global data, market cap, and volume, and iterate through the results.

This update video explains CoinMarketCap API changes, recommends sticking with version 1 for compatibility, since version 2 yields different data formats and can break the course logic.

Build a crypto portfolio app with Ruby on Rails by fetching CoinMarketCap data without a gem, using net/http and json to parse and display on the index page.

Create a single coin lookup form in a Rails app that posts a crypto symbol to the home look up path, then uses params to display the symbol (like BTC).

Apply robust error handling to the crypto form by normalizing input to uppercase, validating empty input, and preparing currency validation with an allowed list before API integration.

Connect to the API by wiring the look up coin flow, using symbol-based lookup, and add error handling to display results on the lookup page.

Create a user management system with devise for sign-up, sign-in, and sign-out, then set up a second database to hold each user's crypto portfolio in Rails.

Install devise for a rails app by adding the gem and running bundle install. Generate devise install and devise views; set up a home index route and bootstrap flash messages.

Explore how devise creates routes for users, sessions, and registrations in a Rails app. Learn to sign up, sign in, edit user registrations, and view the resulting flash messages.

Create a dynamic navigation bar with Devise links for sign up, log in, log out, and edit profile, adapting shown options to whether a user is signed in.

Build bootstrap-styled devise panel views for a Ruby on Rails crypto portfolio app, wrapping forms with headers and footers and enabling responsive sign up, log in, and profile pages.

Learn how to build a user-specific crypto portfolio database in Rails by creating a portfolio table, linking it to users, and tracking name, symbol, amount bought, and price per unit.

Explore scaffold-generated portfolio view pages for a crypto app, linking each crypto to the current user and enabling create, read, update, and delete actions.

Add Kryptos navigation links to the bar and enforce sign-in with before_action authenticate_user to restrict creating new Kryptos and improve routing.

Apply rails associations to link users with their kryptos, using has_many for users and belongs_to for kryptos, ensuring listing shows only kryptos belonging to the current user via user_id.

Bootstraps the listing page table with bootstrap styles like striped and hover, and connects to the coin market cap API to display name, symbol, rank, price, percentage change, and cost.

Connect the database to the crypto api by updating the Kryptos controller and index view to look up crypto data and symbols, then render names in a table.

Learn how to calculate profit and loss in a crypto portfolio app by comparing total paid to current value, add columns for cost paid per unit and total paid.

Implement percentage changes—one hour, 24 hour, and seven day—after current price to enhance trend analysis in the Ruby on Rails crypto portfolio app.

Implement a running total of profit and loss in a Ruby on Rails crypto portfolio app, initialize profit_loss to zero, update with plus equals, and display on the index.

Tweak the crypto show page in a Ruby on Rails app by refining the panel layout and integrating coin market cap API data for name, symbol, price, and rank.