update-alternatives --config editor

  def current_year
      Time.now.strftime('%Y')
  end

"...Всички права запазени <%= current_year %> ...."

rails _1.2.6_ името_на_проекта

 map.resources :news -> map.resources :news, :singular => :news_instance

 news_path() /news
 new_news_instance_path() /news/new
 news_instance_path(1) /news/1
 edit_news_instance_path(1) /news/1;edit

 #edit
 <% form_for(@news, :url=>  news_instance_path(@news)) do |f| %>

 ......

 if @news.save
   format.html { redirect_to news_instance_path(@news) }
 ......

sudo gem install fastercsv

require 'rubygems'
require 'fastercsv' 

FasterCSV.foreach('./imAreas.csv') do |row|
	e1 = row[0]
	e2 = row[2]
	e3 = row[3]
        .........
end

Sitemap: http://www.yoursite.com/sitemap.xml

cd vendor/plugins
 svn export https://secure.near-time.com/svn/plugins/trunk/tiny_mce

  rake tiny_mce:scripts:install

	<%= javascript_include_tiny_mce_if_used %>
	<%= tiny_mce if using_tiny_mce? %>

class Admin::BaseController < ApplicationController
  layout 'admin'
  uses_tiny_mce(:options => {:theme => 'advanced',
                             :browsers => %w{msie gecko},
                             :theme_advanced_toolbar_location => "top",
                             :theme_advanced_toolbar_align => "left",
                             :theme_advanced_resizing => true,
                             :theme_advanced_resize_horizontal => false,
                             :paste_auto_cleanup_on_paste => true,
                             :theme_advanced_buttons1 => %w{formatselect fontselect fontsizeselect bold italic underline strikethrough separator justifyleft justifycenter justifyright indent outdent separator bullist numlist forecolor backcolor separator link unlink image undo redo},
                             :theme_advanced_buttons2 => [],
                             :theme_advanced_buttons3 => [],
                             :plugins => %w{contextmenu paste}},
                :only => [:new, :edit, :show, :index])  
.....

Redirect 301 /example_dir http://www.domain_example.com

sudo perl -MCPAN -e 'install DBD::mysql'

dbdimp.c: In function 'mysql_dr_connect':
dbdimp.c:1677: error: 'ulong' undeclared (first use in this function)
dbdimp.c:1677: error: (Each undeclared identifier is reported only once
dbdimp.c:1677: error: for each function it appears in.)
dbdimp.c:1677: error: parse error before numeric constant
make: *** [dbdimp.o] Error 1

typedef unsigned long ulong;

:integer
:float
:datetime
:date
:timestamp
:time
:text
:string
:binary
:boolean

<%= link_to_unless request.env['HTTP_REFERER'].nil?, 'back', request.env['HTTP_REFERER']%>

<%= link_to 'back', request.env['HTTP_REFERER'] unless request.env['HTTP_REFERER'].nil?%>

require ‘gettext/rails’
class ApplicationController < ActionController::Base

require ‘gettext/rails’

....
     begin
              ENV["RAILS_ENV"] = @config[:db_mode]
              require ‘config/boot.rb’
              require ‘config/environment.rb’
#             require ‘app/controllers/application.rb’
....

http://manuals.rubyonrails.com/read/chapter/105

http://wiki.dreamhost.com/RubyGems

gem install -y radiant
Bulk updating Gem source index for: http://gems.rubyforge.org
Killed

rm -rf /home/USERNAME/.gems/source_cache

RailsFCGIHandler.process! nil, 10

class RailsFCGIHandler
  private
    def frao_handler(signal)
      dispatcher_log :info, "asked to terminate immediately"
      dispatcher_log :info, "frao handler working its magic!"
      restart_handler(signal)
    end
    alias_method :exit_now_handler, :frao_handler
end

perl -pi -w -e 's/search/replace/g;' *.php

-е - изпълнява съответният код
-i - редактира на място
-w - съобщения при записване
-p - цикъл (loop)

#!/usr/bin/env ruby
require File.dirname(__FILE__) + "/../config/environment"
require 'fcgi_handler'

class RailsFCGIHandler
 private
    def frao_handler(signal)
         dispatcher_log :info, "asked to terminate immediately"
              dispatcher_log :info, "frao handler working its magic!"
               restart_handler(signal)
        end
        alias_method :exit_now_handler, :frao_handler
  end

RailsFCGIHandler.process!

products = Array.new

products << {'name'=>'one', 'price'=>100}
products << {'name'=>'two', 'price'=>200}
products << {'name'=>'three', 'price'=>50}

products.sort_by { |p| p['name'] }

products.sort_by { |p| p['price'] }

    create_table :images do |t|
      t.column :parent_id,    :integer
      t.column :content_type, :string 
      t.column :filename,     :string
      t.column :thumbnail,    :string
      t.column :size,         :integer
      t.column :width,        :integer
      t.column :height,       :integer 
      t.column :user_id,    :integer                  
      t.column :asset_id, :integer                  
      t.column :asset_type, :string      
    end

      t.column :asset_id, :integer                  
      t.column :asset_type, :string

class Image < ActiveRecord::Base
  belongs_to :asset, :polymorphic => true, :dependent => :destroy
.....

class Link < ActiveRecord::Base
  has_one :image, :class_name => 'Image', :as => :asset, :dependent => :destroy
.... 

class LinksController < ApplicationController

  def new
    @link = Link.new
  end

  def create
    @link = Link.new(params[:link])
    if !params[:image][:uploaded_data].blank?
      @image = Image.new(params[:image])
      @link.image = @image
    end
    if @link.save
      flash[:notice] = 'Линка е добавен успешно !'
      redirect_to :action => 'list'
    else
      render :action => 'new'
    end
  end

  def edit
    @link = Link.find(params[:id])
    @image = @link.image
  end

  def update
    @link = Link.find(params[:id])
    @link.attributes = params[:link]
    if !params[:image][:uploaded_data].blank?
      @image = Image.new(params[:image])
      @link.image = @image      
    end
    if @link.update_attributes(params[:link])
      flash[:notice] = 'Линка беше променен !'
      redirect_to :action => 'list'
    else
      render :action => 'edit'
    end
  end

  has_attachment :content_type => :image, 
                   :storage => :file_system, 
                   :max_size => 200.kilobytes,
                   :resize_to => '320x240>',
                   :thumbnails => { :thumb => '100x100>' }


   def validate
     errors.add("empty", "Изберете снимка на проекта") unless self.filename
     unless self.filename == nil

       # Images should only be GIF, JPEG, or PNG
       [:content_type].each do |attr_name|
         enum = attachment_options[attr_name]
         unless enum.nil? || enum.include?(send(attr_name))
           errors.add("type","Файла който сте избрал е различен от JPEG, PNG или GIF")
         end
       end

       # Images should be less than 5 MB
       [:size].each do |attr_name|
         enum = attachment_options[attr_name]
         unless enum.nil? || enum.include?(send(attr_name))
           errors.add("size", "Файла който сте избрал е с големина по-голяма от максималната 200 KB")
         end
       end
     end
   end

<%= error_message_on 'image', 'empty' %>
<%= error_message_on 'image', 'size' %>
<%= error_message_on 'image', 'type' %>