On Tuesday 11 May 2010, andyjeffries wrote:
> > > How do I configure a Rails-3 Engine so that the engine's Gemfile
> > > is integrated with the parent-Rails-app's bundle?
> > 
> > You package your plugin as a gem, then add it as a dependency to
> > your Rails app.
> > 
> > Write up a yourplugin.gemspec and put gem 'yourplugin', :path =>
> > '/to/your/plugin' in your app try.
> 
> Hi Jeremy,
> 
> I'm not sure you answered the OP's question (as I'm looking for the
> same answer).  He wants to know, if he has a Gemfile within his gem/
> engine how can he get the Rails app/Bundler to automatically load
> it's dependencies along with the Rails app's hardcoded dependencies.

Jeremy answered the question. Really. Gemfiles are for apps, not for 
gems. You specify a gem's dependencies through its gemspec. Have a look 
at all the gems on github or try

$ gem specification activemerchant --ruby

to get an idea.

> I agree with this (your Rails app shouldn't need to know what the
> dependencies are for the dependencies you have, Bundler should just
> take care of them) and I'm trying to do the same thing.

That's what bundler does. It's up to you to declare the dependencies in 
the appropriate way. For gems that means in a gemspec.

Michael

-- 
Michael Schuerig
mailto:[email protected]
http://www.schuerig.de/michael/

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