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Topic: How to Install Rails on Ubuntu 16.04 LTS |
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| How to Install Rails on Ubuntu 16.04 LTS |
What is Rails?
Rails is a web application development framework written in Ruby language.
Why Rails?
It is designed to make programming web applications easier based on the philosophy:
Don't Repeat Yourself
Convention Over Configuration
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| Install Rails |
With Ruby available, the RubyGems packaging system should be included. You can check by:
Then you can install Rails (which is a gem) by:
Later on, you can update your Rails by:
If the installation process goes well, you should be able to run the version checking:
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| Rails project's dependency |
Before we can start to build your Rails project, you normally need to have the followings available:
Database -- which is used to store Rails project's objects.
For example, PostgreSQL
NodeJS -- a JavaScript runtime
$ curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
$ sudo apt-get install nodejs
Bundler -- which is used to manage project's version control.
$ gem install bundler
Successfully installed bundler-1.15.4
Parsing documentation for bundler-1.15.4
Done installing documentation for bundler after 6 seconds
1 gem installed
$ bundler -v
Bundler version 1.15.4
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| Troubleshooting -- bundler with specific version |
Sometimes Rails project need a specific version of bundler to build all of those dependencies, but your environment has only the latest ones. For example, bundlers (<=1.5.3, >=1.3.3) are desired, but you have 1.5.4 installed.
Here is what you can do.
$ gem uninstall bundler
$ gem install bundler --version '1.5.3'
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posted on: 09/09/2017 01:54:00 AM
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