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POHow do you fix this Heroku error with the pg gemfile and Rails 3.1?
 

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  1. POHow do you fix this Heroku error with the pg gemfile and Rails 3.1?
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    <p>I'm trying to upload a Rails 3.1 app (with CoffeeScript) to Heroku. Apparently, there are known issues with this (http://stackoverflow.com/questions/6075961/problem-deploying-rails-3-1-project-to-heroku-could-not-find-a-javascript-runtim), so I added this to my Gemfile:</p> <pre><code>group :production do gem 'therubyracer-heroku', '0.8.1.pre3' end </code></pre> <p>Then, after a few more messing around, I found out I had to do the following:</p> <pre><code>group :production do gem 'therubyracer-heroku', '0.8.1.pre3' gem 'pg' # pg from http://stackoverflow.com/questions/6410623/heroku-error-when-launch-rails3-1-app-missing-postgres-gem end </code></pre> <p>Now I hit this error: "You have modified your Gemfile in development but did not check the resulting snapshot (Gemfile.lock) into version control"</p> <pre><code>git push heroku master Counting objects: 5, done. Delta compression using up to 4 threads. Compressing objects: 100% (3/3), done. Writing objects: 100% (3/3), 402 bytes, done. Total 3 (delta 2), reused 0 (delta 0) -----&gt; Heroku receiving push -----&gt; Rails app detected -----&gt; Detected Rails is not set to serve static_assets Installing rails3_serve_static_assets... done -----&gt; Configure Rails 3 to disable x-sendfile Installing rails3_disable_x_sendfile... done -----&gt; Configure Rails to log to stdout Installing rails_log_stdout... done -----&gt; Gemfile detected, running Bundler version 1.0.7 Unresolved dependencies detected; Installing... Using --without development:test You have modified your Gemfile in development but did not check the resulting snapshot (Gemfile.lock) into version control You have added to the Gemfile: * pg FAILED: http://devcenter.heroku.com/articles/bundler ! Heroku push rejected, failed to install gems via Bundler </code></pre> <p>Well, there is no updated Gemfile.lock to commit... even after I run bundle update. What's going on? How the heck do I deploy to Heroku? I thought Ruby on Rails and Heroku were supposed to be easy to get started with!</p>
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