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{{From|https://help.ubuntu.com/community/RubyOnRails}} {{Languages|UbuntuHelp:RubyOnRails}} === Intro === These instructions are for Ubuntu 8.04 LTS (hardy). Instead of using <code><nowiki>apt</nowiki></code> we use gems because of what ReinH put best... '' <ReinH> Let gems manage your rails package otherwise gem and apt-get will start fighting like Spock and Captain Kirk in Amok Time. If you haven't seen that episode, trust me: you don't want that. '' === Get Ruby === <pre><nowiki> sudo apt-get install ruby-full build-essential </nowiki></pre> === Server Installation === Now you have Ruby, you already got a server included, WEBrick. You may settle with that, also because the installation is much easier, and reboots are faster. But it lacks the configuration options that apache and lighttpd offer. So if you want to have RubyOnRails running on apache or lighttpd, make sure you have installed these first. ==== Apache ==== <pre><nowiki> sudo apt-get install apache2 apache2-mpm-prefork apache2-prefork-dev </nowiki></pre> ==== Lighttpd ==== Preparing the house: <pre><nowiki> sudo apt-get install lighttpd libfcgi-ruby1.8 </nowiki></pre> === Installing RubyGems === The link below is to a specific version of RubyGems (version 1.1). You can get a later version from http://rubyforge.org/frs/?group_id=126, but it should not be really necessary because we ask rubygems to update itself at the end. But to make it more complete, a description of RubyGems 1.2 is also included, below the install instructions of RubyGems 1.2. ==== RubyGems 1.1.0 ==== <pre><nowiki> wget http://rubyforge.org/frs/download.php/34638/rubygems-1.1.0.tgz tar xzvf rubygems-1.1.0.tgz cd rubygems-1.1.0 sudo ruby setup.rb sudo ln -s /usr/bin/gem1.8 /usr/bin/gem sudo gem update --system </nowiki></pre> ==== RubyGems 1.2.0 ==== <pre><nowiki> wget http://rubyforge.org/frs/download.php/38646/rubygems-1.2.0.tgz tar xzvf rubygems-1.2.0.tgz cd rubygems-1.2.0 sudo ruby setup.rb sudo ln -s /usr/bin/gem1.8 /usr/bin/gem sudo gem update --system </nowiki></pre> The below error is sometimes encountered after running sudo gem update --system. <pre><nowiki> /usr/bin/gem:23: uninitialized constant Gem::GemRunner (NameError) </nowiki></pre> To fix that error follow the below instructions. <pre><nowiki> sudo gedit /usr/bin/gem In the file find: require 'rubygems' Add the following line below the above line: require 'rubygems/gem_runner' </nowiki></pre> === Installing rails === We can now use RubyGems to install rails: <pre><nowiki> sudo gem install rails </nowiki></pre> === Preparing for your first rails app === Configuration of the webserver also assumes you have by then a rails application set up. Simpy enter to get that done (it will create you a first test page: <pre><nowiki> rails /home/myuser/www/mynewapp </nowiki></pre> You will see a bunch of stuff on the shell... that should be fine (unless you see a error message). that created the rails folder with all the stuff, so now you should have something like have: /home/myuser/www/mynewapp/public === Configure the server === ==== WebTrick (Ruby's server) ==== No configuring needed, everything is ready to create your first application. You can even try this step before you try launching your application via apache or lighttpd: <pre><nowiki> $cd /home/myuser/www/mynewapp $ruby script/server => Booting WEBrick... => Rails 2.1.0 application started on http://0.0.0.0:3000 => Ctrl-C to shutdown server; call with --help for options [2008-07-28 04:39:17] INFO WEBrick 1.3.1 [2008-07-28 04:39:17] INFO ruby 1.8.6 (2007-09-24) [2008-07-28 04:39:17] INFO WEBrick::HTTPServer#start: pid=6860 port=3000 </nowiki></pre> Your application is now responding at `http://0.0.0.0:3000`; press Ctrl+C to stop the web server. If you get errors related to the database, you might want to instal sqlite, or create a database using ==== Apache ==== Run the following to install passenger, an apache module that adds support for running rails apps within apache: <pre><nowiki> sudo gem install passenger sudo passenger-install-apache2-module </nowiki></pre> Now you have to configure apache to point to the passenger module. Simply copy the suggested code from the <code><nowiki>passenger-install-apache2-module</nowiki></code> installation to your apache configuration file, which should be something along the lines of: (if you are using RubyGems 1.1): <pre><nowiki> LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-1.0.3/ext/apache2/mod_passenger.so RailsSpawnServer /usr/lib/ruby/gems/1.8/gems/passenger-1.0.3/bin/passenger-spawn-server RailsRuby /usr/bin/ruby1.8 </nowiki></pre> (if you are using RubyGems 1.2): <pre><nowiki> LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3/ext/apache2/mod_passenger.so PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-2.0.3 PassengerRuby /usr/bin/ruby1.8 </nowiki></pre> Now you should point apache to the location of your ruby app. Create something like this in /etc/apache2/sites-available/ror.myhost.com <pre><nowiki> <VirtualHost *> ServerName ror.myhost.com DocumentRoot /home/myuser/www/mynewapp/public </VirtualHost> </nowiki></pre> Alternatively, you could run rails in a specific sub uri of your current host, e.g. localhost. First, make a symbolic link to your rails public folder from with var/www (or wherever you have the root of your apache www folder), e.g.: <pre><nowiki> ln -s /home/myuser/www/mynewapp/public /var/www/mynewapp </nowiki></pre> In case of localhost (which is the default host with a fresh ubuntu/apache install) edit <code><nowiki>default</nowiki></code> in <code><nowiki>/etc/apache2/sites-available</nowiki></code> and add: <pre><nowiki> RailsBaseURI /mynewapp </nowiki></pre> ''murb: I had to add <code><nowiki>RailsEnv development</nowiki></code> as well to get around the 'no route found to match "/rails/info/properties" with {:method=>:get}' warning... (can someone elaborate on why?)'' Save, and enable the rewrite module for apache, and register this site... and finally, restart apache. <pre><nowiki> sudo a2enmod rewrite sudo a2ensite ror.myhost.com sudo /etc/init.d/apache2 restart </nowiki></pre> ==== Lighttpd ==== Edit lighttpd.conf, e.g.: <pre><nowiki> sudo kate /etc/lighttpd/lighttpd.conf </nowiki></pre> and here starts the tricky part, paste at the end of the file: <pre><nowiki> server.modules += ( "mod_fastcgi", "mod_rewrite" ) $HTTP["host"] == "localhost" { server.document-root = "/home/santiago/proyectos/beholder/public/" server.dir-listing = "disable" server.error-handler-404 = "/dispatch.fcgi" fastcgi.server = ( ".fcgi" => ( "localhost" => ( "min-procs" => 1, "max-procs" => 1, "socket" => "/tmp/ruby-beholder.socket", "bin-path" => "/home/santiago/proyectos/beholder/public/dispatch.fcgi", "bin-environment" => ( "RAILS_ENV" => "development" ) ) ) ) } </nowiki></pre> now run <pre><nowiki> sudo /etc/init.d/lighttpd restart </nowiki></pre> and you're set, go to http://localhost and you should see the rails index... click on the link "About your rails enviroment" and if you dont see a 404 o 500 error... then your're set (you should see either a rails error, or a rails message or something like that) for any comments on the lighttpd install please feel free to mail me to santiago-ve@ubuntu.com ---- [[category:CategoryDevelopment]] [[category:UbuntuHelp]]
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