There may be others as well. To get a list of gems that are outdated: Stay Current You can track updates to gems at the RubyGems. Search for each gem you use and "subscribe" to see a feed of updates in the dashboard an RSS feed is available from the dashboard. These services survey your GitHub repo and send email notifications when gem versions change.
Gemnasium and VersionEye are free for public repositories with a premium plan for private repositories. Faster Gem Installation By default, when you install gems, documentation files will be installed. Installing gem documentation files takes time, so many developers like to toggle the default so no documentation is installed.
Install Bundler The Bundler gem is an essential tool for managing gems when developing and running Rails applications. RVM used to install Bundler automatically. As of version 1. You must install Bundler: Nokogiri is a gem that requires compilation for your specific operating system. However, compilation takes time.
To save time, install the Nokogiri gem in the RVM global gemset: It will also pause without displaying any progress for as long as five minutes. If installation fails, make sure your system is configured properly look for help on Stack Overflow.
Install Rails Check for the current version of Rails. You can install Rails directly into the global gemset. However, many developers prefer to keep the global gemset sparse and install Rails into project-specific gemsets, so each project has the appropriate version of Rails. If you install Rails at this point, you will install it into the global gemset. I recommend to make a gemset for the beta release: If you want the newest beta version or release candidate, you can install with --pre.
I recommend installing the beta release: For example, if you want the Rails 3. If you want, you can close the Terminal window. Everything is installed, so you won't lose anything by closing the Terminal. Next, try building a Rails application.
Create a projects folder and move into the folder: The option "—ruby-version" creates. When we create the gemset, it will be empty though it inherits use of all the gems in the global gemset. We immediately install Rails. The command gem install rails installs the most recent release of Rails. Finally we run rails new..
We use the Unix "dot" convention to refer to the current directory. This assigns the name of the directory to the new application. This approach is different from the way most beginners are taught to create a Rails application.
Most instructions suggest using rails new myapp to generate a new application and then enter the directory to begin work.
Our approach makes it easy to create a project-specific gemset and install Rails before the application is created. The rails new command generates the default Rails starter app. If you wish, you can use the Rails Composer tool to generate a starter application with a choice of basic features and popular gems.
Quick Test For a "smoke test" to see if everything runs, display a list of Rake tasks. Run the application with the Rails server command: Use Control-c to stop the server. This concludes the instructions for installing Ruby and Rails. Read on for additional advice and tips. It has more options for customization. For examining and writing code, you'll also need a text editor program such as Sublime or Atom or Visual Studio Code. Of course, some programmers will suggest you try Vim or Emacs.
Rails Example Applications If you'd like to download and play with a complete, working Rails application, choose any of the RailsApps Example Applications. For example, you can download the application that is built in the book, Learn Ruby on Rails.
Make sure you are in your workspace folder, then download from GitHub and install gems using bundler: You won't see a result or a prompt while it is waiting for a request from a web browser. Use your web browser to visit the application at http: Using the conventional approach: You can add the -T flags to skip Test:: Unit if you are using RSpec for testing. You can run the Rails server to test the application.
For example, if you want to use an existing gemset named "ruby Though SQLite is adequate for development and even some production applications , a new Rails application can be configured for other databases.
Supported for preconfiguration are: Deployment If you wish to run your own servers, you can deploy a Rails application using Capistrano deployment scripts. However, unless system administration is a personal passion, it is much easier to deploy your application with a "platform as a service" provider such as Heroku.