rack-cors VS ActiveAdmin

For this, you can use the rack-cors gem:

Because the origin is not matching. For testing purposes you could use https://github.com/cyu/rack-cors.

Have you enabled cors in the rails app? https://github.com/cyu/rack-cors

# Be sure to restart your server when you modify this file. # Avoid CORS issues when API is called from the frontend app. # Handle Cross-Origin Resource Sharing (CORS) in order to accept cross-origin AJAX requests. # Read more: https://github.com/cyu/rack-cors Rails.application.config.middleware.insert_before 0, Rack::Cors do allow do origins 'http://データを贈りたいパス' resource '*', headers: :any, methods: [:get, :post, :put, :patch, :delete, :options, :head] end end

You'll also want to make sure your Rack CORS setup is taken care of. In the Gem file, you'll need to install the cors gem which can be found here. After adding to your Gem file, make sure to run bundle install from your command line again.

Have the following in my /config/initializers/cors.rb and using rack-cors gem

Rails is absolutely fantastic for projects below 10,000 lines with 1 or 2 contributors, especially if you want a classic forms-based UI. And you can get a huge amount done under those constraints in Rails.

But as of couple of years ago, Rails came with a number of drawbacks:

1. There was no really viable system of static typing that a significant number of people were enthusiastic about. See https://www.reddit.com/r/ruby/comments/105sdax/whats_the_lat... for a discussion.

2. The lack of static typing meant far less IDE support. Fewer documentation tooltips, less autocompletion, etc.

3. I used to do a lot of Rails consulting. And whenever I had to drop into a codebase with more than 50,000 lines or 5 active developers, it was generally a painful slog. Too many weird Rails plugins that stopped being maintained, too much magic, too many nasty surprises while refactoring.

Basically, smaller Rails projects were an absolute delight. Larger Rails projects, though, tended to feel more like a swamp. Tools like https://activeadmin.info/ could tip the balance where applicable.

I still think that small Rails projects are fantastic, and I don't think anything since has remotely matched Rails' productivity within that niche. There's just too much mature tooling, and much of it works together seamlessly. But not too many projects want classic multi-page apps right now, and small projects often grow up to be big projects.

Can you clarify what's the "tremendous value" you're getting out of the Django admin?

At Heii On-Call https://heiioncall.com/ we are using Active Admin https://activeadmin.info/ for Ruby on Rails, which seems quite similar to the Django admin. In my experience, it's mostly useful as a fairly basic read-only view of what's in the database. In Rails, it's so easy to whip together a custom view that we tend to do that, and the Active Admin is nice to have but I wouldn't say "tremendous value".

Github Link : https://github.com/activeadmin/activeadmin

for those who know [https://activeadmin.info/](https://activeadmin.info/) it uses a file format [https://github.com/activeadmin/arbre](https://github.com/activeadmin/arbre)

Very neat! My first thought was that this was a competitor to https://bullettrain.co/.

Looking into it a bit more, it seems more aimed at building admin panels than whole apps. I guess it competes against tools like https://activeadmin.info/?

We briefly considered migrating to a full-grown Rails admin interface, such as ActiveAdmin, RailsAdmin, Administrate or Avo. We especially liked Avo which is built on a very modern stack similar to ours (Tailwind + Hotwire + ViewComponents). In the end, we didn’t go this route as we found some of the options a bit too restrictive (even though Avo is very flexible) and we did not feel like trying to amend it to our needs. For example, Avo renders forms in a 1-field-per-row layout while we wanted something more similar to the Tailwind UI Stacked form layout. Nevertheless, we found a great deal of inspiration in the Avo code and its design principles.

I second Rails. It's incredibly polished and has really good gems to speed up dev. ActiveAdmin is a great gem if you need to quickly make an admin dashboard. It was useful when I had a small consultancy.

https://activeadmin.info/

See an example: https://activeadmin.info It provides a fast way to create back office functionality.

[1] https://activeadmin.info/