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POHow do I configure Capistrano to use a different gemset for staging and production environments?
 

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  1. POHow do I configure Capistrano to use a different gemset for staging and production environments?
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    <p>I have two files on the server, one in each environment's shared directory, named rvmrc. This contains <code>rvm use ree-1.8.7-2012.02@appname-production --create</code> for production and <code>rvm use ree-1.8.7-2012.02@appname-staging --create</code> for staging. This should allow the app to run under its own gemset, because I've built in a task to the deploy script to link the corresponding <code>shared/rvmrc</code> file into the app as <code>.rvmrc</code>. That task is displayed below, in my <code>deploy.rb</code> example.</p> <p>I still need to get bundler to use the correct gemset during the deploy, though. I thought I could do this by using <code>set :rvm_ruby_string, "ree-1.8.7-2012.02@appname-#{rails_env}"</code> to dynamically set the <code>rvm_ruby_string</code> to the environment's gemset. However, I find that my deploys only use the production gemset - even when doing <code>cap staging deploy</code>.</p> <p>See <a href="https://stackoverflow.com/questions/14004712/is-it-a-good-idea-to-use-a-different-gemset-for-staging-and-production-environme">this question</a> for more information on my thought process for even trying this (and to chime in if you think it's just a bad idea).</p> <p>What do I need to change to get my deploys to use the correct gemset based on the environment?</p> <p>In my deploy file, the relevant lines that I have (I've stripped out quite a bit) are:</p> <pre><code>require 'rvm/capistrano' require 'capistrano/ext/multistage' require 'bundler/capistrano' set :stages, %w(staging production) set :default_stage, "staging" set :rvm_ruby_string, "ree-1.8.7-2012.02@appname-#{rails_env}" set :rvm_type, :system set :bundle_without, [:development] namespace :deploy do task :rvmrc do run "rm #{latest_release}/.rvmrc; ln -s #{shared_path}/rvmrc #{latest_release}/.rvmrc" end end before "bundle:install", "deploy:rvmrc" </code></pre> <p>In my production.rb file, the relevant lines that I have (I've stripped out quite a bit) are:</p> <pre><code>set :branch, "master" set :rails_env, "production" </code></pre> <p>In my staging.rb file, the relevant lines that I have (I've stripped out quite a bit) are:</p> <pre><code>set :branch, "staging" set :rails_env, "staging" </code></pre>
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