Unlock the power of automatic code reloading in Rails with these simple steps

Looking for a way to implement 'hot code reloading' in a development Rails application?

Let's say you're working on a Rails project and make changes to a stylesheet. Currently, you have to refresh the page using cmd-r or by clicking the refresh button to see the updated styling.

Is there a method to automatically reload the page when changes are made?

This feature works seamlessly in frameworks like Phoenix (but certainly not limited to it). How can we enable this functionality in Ruby on Rails?

htmlcssruby-on-rails

Answer №1

In my current setup, all assets such as js, css, and ruby files are reloaded.

Here is what you need to insert in your Gemfile:

group :development, :test do
  gem 'guard-livereload', '~> 2.5', require: false
end

group :development do
 gem 'listen'
 gem 'guard'
 gem 'guard-zeus'
 gem 'rack-livereload'

Add the following line in your development.rb file:

config.middleware.insert_after ActionDispatch::Static, Rack::LiveReload

I have configured zeus in my guard file:

# A sample Guardfile
# More info at https://github.com/guard/guard#readme

## Your configurations here##

Switched from using spring to zeus in this setup.

Simply run guard, open localhost:3000, and you are set to go.

This solution should provide faster reload times compared to browserify.

If you are practicing TDD, feel free to uncomment the lines in the guard file for testing directories.

Answer №3

This incredible feature automatically reloads whenever you make changes to JavaScript elements, without affecting CSS or Ruby files.

For more information on this amazing functionality, check out: https://github.com/rmosolgo/react-rails-hot-loader

I have yet to come across a similar tool for hot code reloading in Rails specifically for CSS.

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