New Environment installations for rails development in ubuntu and mac

new_environment_installation

===================================INSTALL CHROMIUM==============================
# install chromium

$ sudo apt-get install chromium-browser

===================================INSTALL rvm==============================

$ gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
$ \curl -sSL https://get.rvm.io | bash -s stable --ruby	
$ rvm install ruby / this will install the ruby with whatever mentioned version		
$ source ~/.rvm/scripts/rvm

      (or)

*visit the following links

https://rvm.io/rvm/install

* if the following erros occurs means

Error running 'requirements_debian_libs_install gawk libgmp-dev libgmp-dev',
showing last 15 lines of /home/kuttysaathan/.rvm/log/1497414707_ruby-2.4.0/package_install_gawk_libgmp-dev_libgmp-dev.log

---

$ rvm autolibs disable   // run this command for if the above erros occurs

$ rvm install ruby -v 2.2.0

# install rails
sudo apt-get install ruby-railties-4.0

===================================INSTALL vim==============================
	
$ sudo -s  // move into root

# apt-get install vim // install command for vim editor	

===================================INSTALL postgres==============================

link: https://www.postgresql.org/download/linux/ubuntu/

===================================INSTALL git==============================

sudo apt-get install git

===================================INSTALL sublime text==============================

visti this link => https://askubuntu.com/questions/521265/how-to-install-sublime-text-2-instead-of-3-from-webupd8team-ppa

=============================error faced during bundle install ===============

ERROR:1

An error occurred while installing pg (0.19.0), and Bundler cannot continue.
Make sure that `gem install pg -v '0.19.0'` succeeds before bundling.


sol:

$ sudo apt-get install libpq-dev

--


ERROR:2

An error occurred while installing rmagick (2.15.3), and Bundler cannot continue.
Make sure that `gem install rmagick -v '2.15.3'` succeeds before bundling.


sol:

$ sudo apt-get install imagemagick
$ sudo apt-get install libmagick++-dev

*if the same problem occurs again and again means
sol:

brew update
brew rm imagemagick
brew install imagemagick@6
brew link imagemagick@6 --force
bundle

then

$ bundle

ERROR:3

ERROR:  Loading command: install (LoadError)
	cannot load such file -- zlib
ERROR:  While executing gem ... (NoMethodError)
    undefined method `invoke_with_build_args' for nil:NilClass

sol:

$ sudo apt-get install zlib1g-dev 
$ rvm reinstall ruby-2.3.0


ERROR:4

ERROR:  While executing gem ... (Gem::Exception)
    Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources

sol:

$ brew update

   *It shows another error

    No command 'brew' found, did you mean:
   Command 'qbrew' from package 'qbrew' (universe)
   Command 'brec' from package 'bplay' (universe)
   brew: command not found

 *To install the brew visit the following url's
  http://linuxbrew.sh/
 
$ brew doctor
$ brew install openssl
$ rvm install ruby-2.3.0


ERROR:5

$ bundle // it will show install the below command,so we need to install the bundler
$ sudo apt-get install bundler

ERROS:6

An error occurred while installing mysql2 (0.3.21), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.3.21'` succeeds before bundling.

ERROR:7

An error occurred while installing mysql2 (0.3.21), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.3.21'` succeeds before bundling.

sol:
$ sudo apt-get install mysql-client libmysqlclient-dev


ERROR:8

rake aborted!
Bundler::GemRequireError: There was an error while trying to load the gem 'uglifier'.
Gem Load Error is: Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes.

sol:

$ sudo apt-get install nodejs


ERROR:9

An error occurred while installing nokogiri (1.6.8), and Bundler cannot continue.
Make sure that `gem install nokogiri -v '1.6.8'` succeeds before bundling.

sol:



ERROR10

LoadError: libMagickCore-6.Q16.so.4: cannot open shared object file: No such file or directory

sol:

* Just remove the rmagick gem from Gemfile
* manually install the rmagick gem

gem install rmagick  // this will install the rmagick gem

===========================create a new rails application===============

$ rails new application_name

-It shows some errors,

$ gem install rails // is used to install the rails

-It will install the rails-5.1.1

_for use postgres database ,we need to mention the gem pg

$ vi Gemfile

gem 'pg'

errors:

$ rake // it shows some errors

rake aborted!
Bundler::GemRequireError: There was an error while trying to load the gem 'uglifier'.

---

*it is due to javascript errors

$ sudo apt-get install nodejs  // it will install the nodejs