System Calls

Rails
1

Hello,

I have written a ruby file that starts a new webrick server from an
existing project. When I call this file, the webrick server will start
correctly.

However, when I insert the exact same code inside a fork in a controller
method in another rails project, and that code runs, it doesn’t start
the server correctly.

I’ve actually noticed this previously. I can write a ruby program that
will do system() calls to grab certain info about running processes, but
when I try to do the same thing inside a controller method in an
existing rails project, the code doesn’t return anything. Any idea what
might be causing the code inside the rails project to break?

2

Don’t do that kind of stuff in a Rails controller. There’s a lot of
magic underneath and forking can do strange things to your app if it
doesn’t break it completely.

Check out the Backgroundrb plugin for this.

Jason