Home Videos Build a Cryptocurrency Portfolio App with React and Ruby on Rails

Build a Cryptocurrency Portfolio App with React and Ruby on Rails

1 min read

👉Subscribe for more React/Rails videos: https://www.youtube.com/channel/UCkoEStUK7wxmZef2DcPuCAQ?sub_confirmation=1
👉Here’s the code from this video: https://github.com/zayneio/cryptocurrency-calculator
👉Seed file: https://github.com/zayneio/cryptocurrency-calculator/blob/master/db/seeds.rb
👉Website: https://zayne.io/articles/build-a-cryptocurrency-portfolio-calculator

This video is basically just me messing around with using react in a rails app. There’s a lot of stuff in here on the react side that could be done better. Some of the components could be dumb/presentational components. A lot of variable naming on the fly is done pretty willy-nilly (camelCasing vs underscoring, use of const vs let, etc). Search results could be it’s own component. Etc, etc.



  1. Victor Blomberg

    April 22, 2019 at 6:28 am

    Fantastic job man! Would love to see more react / rails videos 🙂


  2. weefunkster

    April 24, 2019 at 12:52 am

    Your tutorials are really to follow, keep it up!


  3. Paul Rail

    May 16, 2019 at 4:43 pm

    At 22:30, if on Windows, need to run "ruby .binwebpack-dev-server"  instead of ".binwebpack-dev-server"
    Love this project, You've got a new subscriber! Thanks for sharing and would love to see more React / Rails videos!


  4. Ilya Lebedev

    May 30, 2019 at 12:46 am

    Awesome tutorial! Thank you very much! Really enjoyed all of your videos, please make more. I created this app by your guidance and i have few questions:
    1. At 40:10 I dont really understand the point of construction […data.data.currencies] when you could just write data.data.currencies. Why complicate?
    2. Why do you use filter instead of find at 47:10? If you use find you dont need to get first item from result because you wont recieve an array.
    Thank you!


  5. Test User

    June 29, 2019 at 9:25 am

    Great video hard to find good and up to date rails tutorials


  6. Pedro Monsalve

    July 12, 2019 at 5:49 pm



  7. Angel Garcia

    July 15, 2019 at 2:59 am

    Wow, super helpful!


  8. Alejandro Cuellar

    August 14, 2019 at 4:56 pm

    Amazing Job!!!!


  9. albertroswell

    October 8, 2019 at 11:32 am

    very good video, thanks


  10. Sean Black

    October 9, 2019 at 4:26 pm

    These tutorials are excellent. Its really hard to find current Rails tutorials, YouTube, Udemy, Lynda all old out of date. You're making great videos. It would be fantastic if you could continue to do so. Much appreciated. 👍


  11. find dragon

    November 21, 2019 at 11:00 pm

    Fantastic video! Thank you for sharing this tutorial! everything is well explained!


  12. Francisco Barreto

    December 28, 2019 at 7:08 pm

    Just a tip guys, if you use arrow functions instead of regular JS functions you don't need to do any bindings in the constructor because in ES6 it infers that "this" is pointing to the object itself 😉


  13. Lucas de la Torre

    December 29, 2019 at 10:40 pm

    This is a really good tutorial. Thank you!


  14. Tam Jid

    January 24, 2020 at 9:40 pm

    I stuck at this error. Recheck the code sometime couldn't find solution. Any help will be appreciated.
    "ActionController::RoutingError (No route matches [OPTIONS] "/search")"


  15. omlish

    January 27, 2020 at 3:09 pm

    Why do we make a POST request for the search?


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