To get your Rails 3 app running on Heroku you need switch to your stack by following the Heroku stacks documentation. After you have the correct stack set up you need to make sure you have all of your gems set up in your Gemfile. I ran into issues because I use SQLite during development and I didn't have the required pg gem set up in my Gemfile.
That is all there is to getting up and running. I tried out a few of the add-ons, none of them seemed to break my app, but they did not all work quite right. The New Relic add-on reported on deployments but it still has not registered a single request.
Update: Rails 3 beta2 breaks on heroku when the New Relic add-on is added.
How did you define the pg gem in your Gemfile? Did you install any pg files locally?
When I push my code via rake, its complaining that I don't have the postgresql driver installed. And if I gem install it, it wants the postgresql software installed on my dev system. Did you end up installing all of postgresql to get the gem installed?
Thanks for the help. I've been fighting this for days.
I ended up installing postgres on my development box. I spent a bit of time trying to play around with only loading the pg gem in the production environment but I haven't figured out how to get that to work yet.
You can specify gems to be used in production only in the Gemfile:
gem "pg", :group => :production
or for multiple gems:
group :production do
# ... add more gems here
is that what you tried?
Yes, I did try that. It still tries to install the gem when you run bundle install. Also the rake system seems to load enough of the environment that it needs all of the database drivers to be installed.
What you want to use with bundler on your dev box is:
bundle install --without production
Then if pg is only used on Heroku it won't try install it on your dev machine
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