How to reload on change

twistapp · December 10, 2019, 12:27am

Hello,

I would like to know how to reload the server on change. Having to manually stop and start the server manually on every change is driving me crazy. The command jets server outputs:

=> bundle exec rackup --port 8888 --host 127.0.0.1
Jets booting up in development mode!
Puma starting in single mode...
* Version 4.3.1 (ruby 2.5.7-p206), codename: Mysterious Traveller
* Min threads: 0, max threads: 16
* Environment: development
* Listening on tcp://127.0.0.1:8888
Use Ctrl-C to stop

Which is different from what it’s on the site. I have shotgun as dependency.

Thank you.

tung · December 10, 2019, 1:02am

What Jets version are you running?

twistapp · December 10, 2019, 9:42pm

The version is 2.3.8

tung · December 10, 2019, 9:58pm

Interesting, released 2.3.8 with an adjustment to hot reloading but am not seeing how it is resulting in this right now. Here’s the compare:

https://github.com/tongueroo/jets/compare/v2.3.7...2.3.8

Here’s the line:

github.com

tongueroo/jets/blob/62d15ab7550b335a2528e788ba0941c7e9ad98b1/lib/jets/middleware/default_stack.rb#L15


    @app = app
    @config = config
  end


  def build_stack
    Stack.new do |middleware|
      middleware.use Shotgun::Static if Jets.env.development?
      middleware.use Rack::Runtime
      middleware.use Jets::Controller::Middleware::Cors if cors_enabled?
      middleware.use Rack::MethodOverride # must come before Middleware::Local for multipart post forms to work
      middleware.use Jets::Controller::Middleware::Reloader if Jets.config.hot_reload
      middleware.use Jets::Controller::Middleware::Local # mimics AWS Lambda for local server only
      middleware.use session_store, session_options
      middleware.use Rack::Head
      middleware.use Rack::ConditionalGet
      middleware.use Rack::ETag
      use_webpacker(middleware)
    end
  end


private

This should handle it though:

github.com

tongueroo/jets/blob/62d15ab7550b335a2528e788ba0941c7e9ad98b1/lib/jets/application/defaults.rb#L158


  config.helpers.host = nil # nil by default. Other examples: https://myurl.com:8888


  config.controllers = ActiveSupport::OrderedOptions.new
  config.controllers.default_protect_from_forgery = nil


  config.deploy = ActiveSupport::OrderedOptions.new
  config.deploy.stagger = ActiveSupport::OrderedOptions.new
  config.deploy.stagger.enabled = false
  config.deploy.stagger.batch_size = 10


  config.hot_reload = Jets.env.development?


  config
end


# Essentially folders under app folder will be the default_autoload_paths. Example:
#   app/controllers
#   app/helpers
#   app/jobs
#   app/models
#   app/rules

Wondering if you can try:

$ jets console
> Jets.config.hot_reload

Post what that shows please.

twistapp · December 11, 2019, 1:52am

The result is:

=> true

tung · December 11, 2019, 2:05am

Weird, hot reloading should work then. Which files specifically are not reloading?

twistapp · December 11, 2019, 5:48am

All of them actually… shotgun is not being used :(.

tung · December 11, 2019, 3:13pm

shotgun has not been used for a while now. Hot reloading is handled with Zeitwerk for a while now https://github.com/tongueroo/jets/pull/254

Weird that it’s not working for you for some reason. It may be system specific as haven’t been able to reproduce both on my cloud9 machine and Macosx

Check what version of Zeitwerk you have and try upgrading maybe. Unsure here.

Maybe even try spinning up a cloud9 machine - takes only a few minutes. And see if you can reproduce the issue with that. That will help identify if this is a machine specific issue.

twistapp · December 11, 2019, 8:35pm

The version on my local Mac is 2.2.2. I’m using Cloud9 as well and there the version is the same. Should I see the server reloading when I change a file? Cause even on Cloud9 the reload does not happen. I’m using an OSX with Catalina and on Cloud9 I’m using a Ubuntu.

tung · December 11, 2019, 9:37pm

You don’t “see” a reload in the terminal. The files should change though.

So edit your controller or your view files and refresh the browser. You should see the changes without haven’t to restart your server.

It sounds like that is what you’re doing though so am unsure.

twistapp · December 12, 2019, 10:07pm

That’s it, sorry for losing your time :/. Usually tools that hot reload provide a feedback in the terminal.

tung · December 12, 2019, 10:25pm

All good. Glad it was sorted out.

eri2490 · November 19, 2020, 5:00am

hi

I also trouble with hot reload matter.

I’m developing on docker and Jets.config.hot_reload is TRUE.
what should I do??