Andrey Chernykh a-chernykh

My activity in Github is historical. I am using private BitBucket repositories in my day-to-day job.

a-chernykh / deploy.rb

Created August 1, 2012 11:46

Precompile only digest version of static assets (2 times faster compilation)

	namespace :deploy do
	namespace :assets do
	task :precompile, :roles => assets_role, :except => { :no_release => true } do
	run "cd #{latest_release} && #{rake} RAILS_ENV=#{rails_env} #{asset_env} assets:precompile:primary"
	end
	end
	end

a-chernykh / default.rb

Created July 20, 2012 12:19

Easy way to edit configuration file with Chef

	add_line = "config statement"
	bash "add_to_config" do
	code <<-EOH
	grep '#{add_line}' /etc/config \|\| echo '#{add_line}' >> /etc/config
	EOH
	end

a-chernykh / MY_Exceptions.php

Created April 3, 2012 13:54

CodeIgniter error notifications

	<?php

	class MY_Exceptions extends CI_Exceptions {
	function My_Exceptions()
	{
	parent::CI_Exceptions();
	}

	function show_error($heading, $message, $template = 'error_general', $status_code = 500)
	{

a-chernykh / config

Created February 28, 2012 13:52

SSH on steroids (~/.ssh/config)

	Host *
	ControlPath ~/.ssh/master-socket/-%r@%h:%p
	ControlMaster auto
	ControlPersist 4h

a-chernykh / gist:1593447

Created January 11, 2012 06:53

Unicorn init script

	#!/bin/sh

	APP_ROOT=/var/www/current
	PID=/var/www/current/tmp/pids/unicorn.pid
	ENV=production
	CMD="sudo -u ubuntu /opt/ruby-enterprise-1.8.7-2011.03/bin/bundle exec /opt/ruby-enterprise-1.8.7-2011.03/bin/unicorn_rails -E $ENV -c /var/www/current/config/unicorn.rb -D"

	old_pid="$PID.oldbin"

	cd $APP_ROOT \|\| exit 1

a-chernykh / nginx

Created October 4, 2011 06:43

nginx init script

	#!/bin/sh

	### BEGIN INIT INFO
	# Provides: nginx
	# Required-Start: $all
	# Required-Stop: $all
	# Default-Start: 2 3 4 5
	# Default-Stop: 0 1 6
	# Short-Description: starts the nginx web server
	# Description: starts nginx using start-stop-daemon

a-chernykh / ImageFilter.m

Created August 19, 2011 13:13

	for (int i = 0; i < length; i += 4) {
	blue = m_OriginalPixelBuf[i];
	green = m_OriginalPixelBuf[i+1];
	red = m_OriginalPixelBuf[i+2];

	red = pow(red / 255.0f, 1.3f) * 255.0;
	green = pow(green / 255.0f, 1.3f) * 255.0;
	blue = pow(blue / 255.0f, 1.3f) * 255.0;

	// Ensure that pixel is not more than 255

a-chernykh / avatar_uploader.rb

Created August 9, 2011 14:28

CarrierWave extension-aware remote file downloading

	class AvatarUploader < CarrierWave::Uploader::Base
	include CarrierWave::MiniMagick

	def extension_white_list
	model.skip_avatar_extension_check ? nil : %w(jpg jpeg gif png bmp)
	end
	end

a-chernykh / forum.rb

Created July 14, 2011 11:49

Mongoid counter cache

	class Forum
	include Mongoid::Document
	include Mongoid::Timestamps

	field :posts_count, :type => Integer, :default => 0

	has_many_related :posts
	end

a-chernykh / carrierwave.rb

Created July 1, 2011 12:50

Change image quality with carrierwave and mini_magick

	# put this in config/initializers/carrierwave.rb
	module CarrierWave
	module MiniMagick
	def quality(percentage)
	manipulate! do \|img\|
	img.quality(percentage)
	img = yield(img) if block_given?
	img
	end
	end