Can't get rails app to start on heroku

I'm trying to deploy a rails app to heroku, but keep getting the following error. I'd have th开发者_如何学编程ought that managing the postgres gems would be something heroku would handle.

I've tried everything I can think of short of installing postgres on my local machine, which I'd need to do if I wanted to install the postgres gem. There's also no gem called activerecord-postgresql-adapter... I'm guessing this is the standard adapter that comes with rails??

Any thoughts on how to fix this?

App failed to start

/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:76:in `establish_connection': Please install the postgresql adapter: `gem install activerecord-postgresql-adapter` (no such file to load -- pg) (RuntimeError)
from /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:60:in `establish_connection'
from /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_specification.rb:55:in `establish_connection'
from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:438:in `initialize_database'
from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:141:in `process'
from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `send'
from /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `run'
from /disk1/home/slugs/135415_c7f31f0_9f1f/mnt/config/environment.rb:9
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
 ... 14 levels...
from /usr/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/builder.rb:29:in `instance_eval'
from /usr/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/builder.rb:29:in `initialize'
from /home/heroku_rack/heroku.ru:1:in `new'
from /home/heroku_rack/heroku.ru:1

Upgrade your Gemfile to Bundler 0.9 and add the pg gem. Easy as that.

It turns out this is a bug because of different versions of bundler running on heroku and my machine. I've switched to using the .gems dependency file and everything seems to be working.

Details on Heroku's bundler support are here: http://docs.heroku.com/bundler

Heroku requires you specify the 'pg' gem.

Wow I've been working on the same thing for way too long now..

I realized I was using gem 'ps' instead of 'pg'

>.<

stupid postres gem!