Docker compose 的 Rails 控制台问题

Question

I have created a rails app with a pgsql database using DockerCompose. It seems to work fine but I have issues with using the rails console while running the app. What I do is :

• docker-compose up . The app starts running.
• Then I run : docker exec -it ID_OF_RAILS_CONTAINER bin/rails console , or " docker-compose run CONTAINER_NAME rails console " (I tried both)

The console opens with this :

Creating transcendance_backend_run ... done
Running via Spring preloader in process 21
Loading development environment (Rails 6.0.3.4)
irb(main):001:0>

Then when I try to create a model, I get the following error:

irb(main):001:0> rails g model user name guild_id banned
Traceback (most recent call last):
        1: from (irb):1
NameError (undefined local variable or method `banned' for main:Object)

Whatever I type, I get this error.

I have tried commenting " gem 'spring-watcher-listen', '~> 2.0.0' " in my gemfile, but now the console just hangs forever when I try to generate a model.

Does anyone know how to fix this?

Thank you

Answer 1

generate is a Rake task bundled with Rails. You can run it in the container like this

docker exec -it ID_OF_RAILS_CONTAINER bin/rails model user name guild_id banned

However, unless the container file system is configured to do a two-way sync with your local, it's likely that the files generated won't appear on you local machine.