class CreateFakes < ActiveRecord::Migration
  def change
    create_table :fakes do |t|
      t.decimal :float_value, :precision => 4, :scale => 3
    end
  end
end

This will allow you to have 3 digits after the decimal point and 4 digits max.

Add repository and install Postgresql:

^
sudo sh -c "echo 'deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main' > /etc/apt/sources.list.d/pgdg.list"
^
wget --quiet -O - http://apt.postgresql.org/pub/repos/apt/ACCC4CF8.asc | sudo apt-key add -
^
sudo apt-get update
^
sudo apt-get install postgresql-common
^
sudo apt-get install postgresql-9.3 libpq-dev
^

Then make yourself a Postgresql superuser:

sudo su postgres

^
createuser your_system_login
^
psql
^
ALTER ROLE your_system_login WITH SUPERUS...

button{
      outline-style: none;
}

All examples here for deploy RoR application with unicorn, staging machine (where we deploys) available via ssh by ssh_key.

1. Deploy via remote_cache:

    require 'rvm/capistrano'
    require 'bundler/capistrano'
   
    set :application, '_proj_'
    set :rails_env, 'production'
    set :domain, '_user@your_deploy_domain_'
    set :deploy_to, "_path_to_#{application}"
    set :use_sudo, false
    set :unicorn_conf, "#{deploy_to}/current/config/unicorn.rb"
    set :unicorn_pid, "#{deploy_to}/shared/pids/u...
   

Just mark needed describes and its as ddiscribe and iit, and next time you run tests only ddiscribes and iits will be executed. In Jasmine version >= 2.0 use fit and fdescribe respectively.

In case you want to organize your features in sub folders, you must tell Cucumber where to find step definitions for them, for that reason use --require flag. For example, your features located in folder features/awesome_staff/*.*, to run them do the following:

cucumber --require features features/awesome_staff

And Cucumber takes step definitions from folder features/step_definitions

For that purpose, just use these command:

bundle install --without production

require 'rake'

rake = Rake.application
rake.init
# you can import addition *.rake files
# app.add_import 'some/other/file.rake'
rake.load_rakefile
rake['db:test:prepare'].invoke()

Visit PhantomJS site, go to download page and copy link address for Linux, in our case this is https://phantomjs.googlecode.com/files/phantomjs-1.9.2-linux-x86_64.tar.bz2

Then go to console and run following commands:

sudo apt-get install libfontconfig libfontconfig-dev libfreetype6-dev

^
wget https://phantomjs.googlecode.com/files/phantomjs-1.9.2-linux-x86_64.tar.bz2
^
sudo mv phantomjs-1.9.2-linux-x86_64.tar.bz2 /opt
^
cd /opt
^
tar -xvf phantomjs-1.9.2-linux-x86_64.tar.bz2
^
ln -s /opt/phantomjs-1.9.2-linux-x8...

NVM provides you more convenient way to manage and set up your Javascript(Node.js) environment.

First install NVM, note git must be installed on your sistem:
^
git clone https://github.com/creationix/nvm.git ~/.nvm && cd ~/.nvm && git checkout git describe --abbrev=0 --tags
^
To activate nvm, you need to source it from your shell:
^
cd # go to home folder
^
source ~/.nvm/nvm.sh
^
If you want to see what versions of Node.js are available to install:
^
nvm ls-remote
^
To install Node.js v0.11.14 just run:
^
nvm install...

If you don't have ssh key, open terminal and run following commands:

cd ~/.ssh

^
ssh-keygen -t rsa -C "your_email@example.com"

When you have ssh key, just copy public part to clipboard:

xclip -sel clip < ~/.ssh/id_rsa.pub

To install xclip run:

sudo apt-get install xclip

Then add to GitHub or GitLab keys in profile settings

Suppose we have some model and we want to localize it, first of all we need to now i18n_key for that model. Open rails console rails c, and run:

OurModelName.model_name.i18n_key

For example let's do that for model, defined in public_activity gem:

PublicActivity::Activity.model_name.i18n_key
#=> :"public_activity/activity"

Now, we cat easily localize it, by adding this in .yaml file:

activerecord:
  models:
    public_activity/activity: 'Our localized model name'

In the same way we can locali...

Suppose you want to create node with name text, but this method already present in Nokogiri::XML::Builder. The solution is to add underscore after node name:

Nokogiri::XML::Builder.new do |xml|
  xml.text_ 'something' # this should create node with name 'text'
end

To install nginx with txid module

install nginx-full package:

sudo apt-get install nginx-full

download last nginx source:

wget http://nginx.org/download/nginx-1.9.9.tar.gz

examine what flags and modules your current nginx installed with:

nginx -V

you will see something like

nginx version: nginx/1.6.2 (Ubuntu)
TLS SNI support enabled
configure arguments: --with-cc-opt='-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-l...

If you want to ignore subfolder in git tree you may add this folder in .gitignore file in root directory, or just create .gitignore file in that folder with content:

# Ignore everything in this directory
*
# Except this file
!.gitignore

First install python-software-properties:

sudo apt-get install python-software-properties

Next, remove openjdk package if installed:

sudo apt-get remove openjdk*

Now, add java repository by webupd8team:

sudo add-apt-repository ppa:webupd8team/java

And update your system:

sudo apt-get update

For installing Oracle Java 7 run:

sudo apt-get install oracle-java7-installer

For Oracle Java 6 run:

sudo apt-get install oracle-java6-installer

For Oracle Java 8 run:

sudo apt-get install oracl...

Suppose you have three hosts (host.one.domain.name, host.two.domain.name host.three.domain.name) with the same credentials, with access by ssh key, then any time when you need to connect to host you must type something like this:

ssh user@host.one.domain.name -i path/to/key_file

^
ssh user@host.one.domain.name -i path/to/key_file

You can simplify your life by creating file ~/.ssh/config, with content:

Host one two three
  HostName host.%h.domain.name
  User user
  IdentityFile path/to/key_file

And now ...

Download build agent archive from your TeamCity server:

wget http://your_teamcity.server.com:8111/update/buildAgent.zip

Unzip it in separate directory:

mkdir buildAgent

^
mv buildAgent.zip buildAgent
^
cd buildAgent
^
unzip buildAgent.zip
^
chown -R your_user:your_group ../buildAgent

Copy agent's settings file:

cp conf/buildAgent.dist.properties conf/buildAgent.properties

Edit this file:

nano conf/buildAgent.properties

There are fields which you must update:

# your TeamCity server address:

...

If some of your scripts don't work with turbolinks, you should do the following:

ready = ->
  #your code here
  
$(document).ready(ready)
$(document).on('page:load', ready)

For css rules only for Firefox use this container:

@-moz-document url-prefix() {
  #some_id{
    height: auto;
  }
}

To do this you should type:

ls --full-time -t

The output will be similar to this:

drwxr-xr-x  2 konjoot konjoot   4096 2016-02-06 17:28:20.915296664 +0300 temp
drwxr-xr-x 40 konjoot konjoot  20480 2015-12-22 22:13:37.444222190 +0300 Books
-rw-rw-r--  1 konjoot konjoot 186815 2015-05-26 21:52:29.326181000 +0300 ava.png
-rwx------  1 konjoot konjoot  79011 2015-05-19 10:48:01.000000000 +0300 screen.png
drwxr-xr-x  3 konjoot konjoot   4096 2015-03-27 02:24:04.832060055 +0300 docs
drwxr-xr-x  2 konjoot konjoot   4096 2014-08-04 03...

To get parent of Capybara's node do the following:

node = page.find '#selector'
parent = node.find(:xpath, '..')
parent_of_parent = node.find(:xpath, '../..')

Install capistrano:

add to Gemfile

  group :development do
      gem 'capistrano'
      gem 'rvm-capistrano'
  end

Then cd to project root folder and run:

bundle install
capify .

setup your config/deploy.rb file, here some useful examples

cap deploy:setup #before first deploy
cap deploy:check #before first deploy
cap deploy:cold  # for first deploy
cap deploy #for subsequent deploys

This tutorial is about setting up environment for RubyOnRails on Ubuntu 14.04.

First of all, update & upgrade your system:

sudo apt-get update

^
sudo apt-get upgrade
^

Install git and curl:

sudo apt-get install curl

^
sudo apt-get install git-core
^

Configure git:

git config --global user.name "Your Name"

^
git config --global user.email email@example.com
^

Install RVM:

curl -sSL https://get.rvm.io | bash -s stable

^
source ~/.rvm/scripts/rvm
^
Test RVM installation correctness:

type rv...