Plugin or Gem reuirement, if gem is not installed

rubyonrails-talk
1

It is about rails2

I have a gem that I install as a plugin, I want in development environment use it from vendor/plugins folder and if it is installed in system to use the systems gem

But if I use config.gem in environment.rb it raises an error about missing gem even if it is present in vendor/plugins

2

It is about rails2

I have a gem that I install as a plugin, I want in development environment use it from vendor/plugins folder and if it is installed in system to use the systems gem

But if I use config.gem in environment.rb it raises an error about missing gem even if it is present in vendor/plugins

This is because config.gem is looking for a gem. It won't fall back and check for a plugin if it fails to find a gem. I think your best bet is to use a require statement. It'll check for the plugin and use that if it finds it. If not it will look for the gem.

Someone please correct me if I'm wrong. I've not actually done this since I've only had one or the other in my apps.

B.

3

Plugins can live in gems, but there's not an equivalent for the other direction. What you'll want to do is to add the config.gem line and then do:

rake gems:unpack GEM=whatever_the_gem_name_is

which will unpack the gem to vendor/gems along with the needed gemspec to get things working.

--Matt Jones