We've been experimenting with CF over Heroku and running into some issues. One of them deals with accessing the rails console in a CF AI. We're using Pivotal's PWS and have tried a number of things, including:
cd app; export HOME=$(pwd); source .profile.d/0_ruby.sh; rails c
and
cd app; export HOME=$(pwd); source .profile.d/*.sh; rails c
Both of which are hit or miss and typically don't work.
It seems a bit ridiculous that it's THIS much work to access the rails console via CF. I feel like there has to be a better, faster way.
Does anyone have any tips?
For anyone saying we should cf ssh in, here is what happens:
vcap#2f4663e4-f876-490c-65e2-a498:~$ cd app
vcap#2f4663e4-f876-490c-65e2-a498:~/app$ ls .profile.d/000_multi-supply.sh 0_ruby.sh
vcap#2f4663e4-f876-490c-65e2-a498:~/app$ source .profile.d/0_ruby.sh
vcap#2f4663e4-f876-490c-65e2-a498:~/app$ cd ..
vcap#2f4663e4-f876-490c-65e2-a498:~$ rails c
bash: rails: command not found
vcap#2f4663e4-f876-490c-65e2-a498:~$ source app/.profile.d/000_multisupply.sh
vcap#2f4663e4-f876-490c-65e2-a498:~$ rails c
bash: rails: command not found
As of writing this, to fire up a Rails console run cf ssh my-app -t -c "/tmp/lifecycle/launcher /home/vcap/app 'rails c' ''".
This will SSH into the container and use the lifecycle launcher, which sets up the environment for you, to execute the command.
Related
I'm trying to create a buildpack with libwebp, and I'm trying to follow this tutorial, which starts with the following commands:
heroku create buildpack-stager
heroku run bash --app buildpack-stager
curl -O https://mupdf.googlecode.com/files/mupdf-1.3-source.tar.gz
tar -xvzf mupdf-1.3-source.tar.gz
...
Should these initial commands be run in the terminal of my application on heroku?
heroku create should be run on your local machine. This creates a new app on Heroku, so if you already have an app to work with it may not be necessary.
heroku run bash should also be run on your local machine. This spins up a one-off dyno for your app and runs the command bash on it.
From there, it looks like they want you to continue with curl, tar, etc. in the same shell as the previous step. The effect will be that these commands are run on the one-off dyno you're using, but you don't need to change terminals or anything.
You might find the Heroku CLI commands documentation page helpful.
All these commands you should run on your local terminal (bash, etc.)
I run Redmine 3.4 with Rails (5.2.0) and Docker 18.03.1-ce on Ubuntu 16.04 Xenial (which is new for me), following this GitHub repository: https://github.com/sameersbn/docker-redmine
I create my Rails app in the same folder where the docker-compose.yml has been created, and cd to it.
Then I have the exact same problem than described in this Redmine post (http://www.redmine.org/boards/3/topics/48309?r=48507#message-48507): when I try the command rails generate redmine_plugin Plug_test, this two error messages appear:
Running via Spring preloader in process 32109
Could not find generator 'redmine_plugin'
So I try the commands that Keith suggested, and running the generate command again, the Spring error message disappear, but the generate command still doesn't work (Could not find generator 'redmine_plugin').
Any idea what to do? I don't know if I'm going in the right direction.
Thanks a lot for your help.
well simple problem, you're running command from outside of your redmine app directory, you need to go into your redmine app directory, after that you can run rails generate redmine_plugin Plugin_test from there
As Ravi mentioned above, you need to go into your redmine app directory instead of your rails app directory.
Or, maybe you can exec plugin generate command via docker run command.
# e.g. In case plugin name is “myplugin"
docker run --name=redmine -it --rm \
--volume=/srv/docker/redmine/redmine:/home/redmine/data \
sameersbn/redmine:3.4.4-2 \
app:rails generate redmine_plugin myplugin
If this works fine, plugin directory named “myplugin” will be generated under /srv/docker/redmine/redmine/plugins/ directory.
Personally, I think, you had batter not use docker to create and development Redmine’s plugin, especially if you are not familiar with Redmine and Docker so much.
I hope this would be any help.
The command that I'm trying to run is rails _3.2.13_ new App
When I run it in command line it creates a Rails app with version 3.2.13, but when I run it with system "rails _3.2.13_ new #{self.name} -T -B" it creates a Rails app with the latest version of Rails not 3.2.13 version.
This is a result of Ruby using /bin/sh to execute shell commands, whereas you are probably using /bin/bash in Terminal on a daily basis. The way each is loaded and the specific configurations present in each will alter the configuration.
If you run which rails from both calls to system and in your terminal you'll likely see different paths. Check echo $PATH and you'll likely see different results too.
To resolve the situation, you can check out What's the difference between .bashrc, .bash_profile, and .environment? which will give you a much better understanding of what's going on, then adjust your shell configuration to accomodate.
I'm new to using Window's Command Prompt, and also to developing with Ruby on Rails. Possibly a silly question but one that I'm sure everyone who learns with CodeCademy will end up asking; right now I'm prefixing every command for my project with 'Jruby -S ...", for example:
C:\users\MyName\MyProject> Jruby -S rails new MyApp
...
C:\users\MyName\MyProject> Jruby -S bundle install
...
C:\users\MyName\MyProject> Jruby -S rake db:migrate
Can I use some kind of alternative shell to save me typing Jruby -S every time? I'm aware of bash and powershell but have basically zero knowledge of whether I should be using them...
Thanks folks!
EDIT
Lots of helpful suggestions below, but I was really looking for a shell to mimic the functionality of the console on codecademy.com (which I believe is supposed to work like a Mac's 'bash' program?). Thanks anyway.
I'm new to using Window's Command Prompt
The CMD works very similarly to the GUI/Shell -- you have to call applications and then run commands with them.
The difference between CMD and windows is that CMD is "naked" - you have to ensure all the paths are correct, and that you're calling the correct application each time.
For example, calling rails server literally translates as:
Program = ruby.exe / rails
Command = server
CMD uses the PATH environment variable to make this process smoother.
The PATH var basically allows you to reference applications on your computer from the CLI (command line interface). This means that if you have an application (EG ruby.exe), you can add the ruby.exe directory to your PATH variable, allowing you to call ruby ... straight from cmd.
--
In your case, I don't have much experience with JRuby; I do know, however, that if you want to invoke the functionality of that application, you have to call it from the cli.
Hopefully my answer gives some context.
You can do that with powershell.
I'm sure that there should be a better way to do that, but you can try this
$ruby = "Jruby"
$s = "-S"
& $ruby $s rails new MyApp
I don't work on windows, however the jruby zip files on the download site have a bin directory with .bat and .exe files for jruby, rake, and gem. You could just add the directory you installed jruby to and the 'bin' subdirectory to your PATH to start.
set JRUBY_HOME= your_installed_jruby
set PATH= %PATH%;%JRUBY_HOME%\bin
http://jruby.org/download
I don't know what the windows installer does, but I would think it would do something similar.
I want to create a unix terminal on my RoR website. On this terminal, the user should be able to execute ruby code. I have no idea how can I create such terminal on browser.
Can anyone guide me about required resources, available ruby gems and technology to be used?
Thanks a lot.
you can use backticks to run shell command
#resut= `#{cmd}`
or eval for ruby command
#resut= eval cmd
note: those are very dangerous to use in real world app