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def simple_nested_set(clazz) # Post for example
  stack = [] # Post for example
  result = []
  clazz.all(:order => "lft").each do |node|
    if stack.empty?
      stack.push({:node => node, :children => []})
      result << stack.last
      next
    end
    if stack.last[:node].lft < node.lft && node.lft < stack.last[:node].rgt

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# Standard Init Script for New Custom Rails 3.1.3 app

RailsVersion = "3.1.3"

instructions =<<-END

Running Standard Init Script for Rails 3.1.3
--------------------------------------------------

During installation a number of questions will arise and

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#config/initializers/page_constraint.rb
class PageConstraint
  def initialize
    @page_paths = Page.all.map { |p| "/#{p.friendly_id}"}
  end

  def matches?(request)
    @page_paths.include?(request.path)
  end

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require "bundler/capistrano"
require 'capistrano/ext/multistage'
require 'new_relic/recipes'

set :application, "sampleapp"
set :branch, "master"
# deploy from local
set :scm, :git
set :repository, ".git"
set :deploy_via, :copy

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# loaded into config/initializers/slug_table_access.rb
### HACK TO LOAD SLUG TABLE ACCESS
# required for use with path constraints in routes
autoload :Slug, 'friendly_id/slug'
# Access Slug table via FriendlyId::Slug
# NOTE: In FriendlyId 3.x the Slug model is available within your app
# This is a hack for FriendlyId 4.x

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# app/models/page.rb
class Page < ActiveRecord::Base
  extend FriendlyId
  friendly_id :title, :use => [:slugged, :history]
end

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# Renders an ItemContainer as a <ul> element and its containing items as <li> elements.
# Prepared to use inside the topbar of Twitter Bootstrap http://twitter.github.com/bootstrap/#navigation
#
# Register the renderer and use following code in your view:
#   render_navigation(level: 1..2, renderer: :bootstrap_topbar_list, expand_all: true)
class BootstrapTopbarList < SimpleNavigation::Renderer::Base

  def render(item_container)
    if options[:is_subnavigation]
      ul_class = "dropdown-menu"

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def edit
  @profile = Profile.find(params[:username])
  what = params[:what]

  if not what.nil?
    if ["basics", "location", "details", "photos", "interests"].member?(what)
      render :action => "edit_#{what}"
    else
      render :action => "edit_basics"
    end

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Format	Meaning
%a	The abbreviated weekday name (“Sun’’)
%A	The full weekday name (“Sunday’’)
%b	The abbreviated month name (“Jan’’)
%B	The full month name (“January’’)
%c	The preferred local date and time representation
%d	Day of the month (01..31)
%H	Hour of the day, 24-hour clock (00..23)
%I	Hour of the day, 12-hour clock (01..12)
%j	Day of the year (001..366)

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class Post < ActiveRecord::Base
  # for SO: http://stackoverflow.com/questions/10481389/friendly-id-with-two-parameters
  # EXAMPLE ASSUMES YOU ARE USING FRIENDLYID 4.X
  # AND THAT YOU HAVE A SLUG:STRING COLUMN ON THE MODEL
  # ...
  extend FriendlyId
  friendly_id :generate_custom_slug, :use => :slugged

  # ...