Rails and PostgreSQL configuration

Here, my system is Ubuntu14.04 LTS.

1. Installing RVM and Ruby

   Run: Curl-ssl Https://get.rvm.io | Bash-s Stable--ruby

   If no curl is installed, command: sudo apt-get install curl

2. Installing Rails

   Running: sudo gem install rails

3. Installing PostgreSQL and the necessary library files

   Running: sudo apt-get install postgresql-9.3 Libpq-dev

   Note that Libpq-dev must be installed, or you cannot compile Postgres gems later.

4. Create a PostgreSQL user

   Because PostgreSQL does not create a user for you, you must manually create a PostgreSQL user, here I set the Superuser

   Run: sudo-u postgres createuser--superuser dbuser

5. Create a Rails app

   Running: Rails new MyApp

6. Run the Rails program, generally if you can see the default home page, the configuration is successful

   Run the following command at once

   Bundle Install

   Rake Db:create

   Rails S