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module Facebooker2
  module Rails
    module Helpers
      module Javascript
        
        def fb_html_safe(str)
          if str.respond_to?(:html_safe)
            str.html_safe
          else
            str

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<%= fb_connect_async_js %>
<% if current_facebook_user %>
   <%= "Welcome #{current_facebook_user.first_name} #{current_facebook_user.last_name}!" %>
   or 
   <%= "Hello #{fb_name(current_facebook_user, :useyou => false)}!" # link to facebook profile
    %>
  <%= fb_logout_link("Logout of fb", request.url) %><br />
<% else
   # you must explicitly request permissions for facebook user fields.
   # here we instruct facebook to ask the user for permission for our website

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<% fb_connect_async_js do %>
	<% unless current_facebook_user %>
		FB.login(function(response) {
			if (response.session) {
				// window.location.href = '#{request.url}';
				window.location.href = '<%= root_url %>';
			} else {
				// user cancelled login
			}
		}, {perms:'read_stream,offline_access,email,user_status,user_interests,user_location,user_online_presence'}); 

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<% fb_connect_async_js do %>
	<% unless current_facebook_user %>
		FB.login(function(response) {
			if (response.session) {
				// window.location.href = '#{request.url}';
				window.location.href = '<%= root_url %>';
			} else {
				// user cancelled login
			}
		}, {perms:'read_stream,offline_access,email,user_status,user_interests,user_location,user_online_presence'}); 

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    def self.add_creation_method(name,klass)
      define_method "#{name}_create" do |*args|
        arg = args.first
        params = arg.nil? ? {} : arg.post_params
        klass_to_send = arg.nil? ? nil : klass
        client.post("#{id}/#{name}", klass_to_send, params)
      end
    end 

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Začínáme s Rails

Tento průvodce popisuje jak začít s Ruby on Rails. Po jeho přečtení byste měli chápat následující:

Instalace Rails, vytvoření nové Rails aplikace a propojení aplikace s databází

Obecná struktura Rails aplikace

Základní principy MVC (Model, View, Controller) a designu založeného na REST přístupu

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Match.delete_all
(1..10).each do |season| # 10 seasons
  (1..3).each do |day| # 3 playing days a season
    (1..5).each do |match| # 5 matches a day
      Match.create(:start => Time.utc(2010,10,(2+(season-1)*3+day-1),(6+(match-1)*4),00,00).getlocal, :finish => Time.utc(2010,10,(2+(season-1)*3+day-1),(6+(match-1)*4),30,00).getlocal, :season_id => Season.find_by_name(season.to_s+".").id)
    end
  end
end

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has_attached_file :photo, :convert_options => {:all => lambda {|i| "-crop '#{i.photo_custom_x}x#{i.photo_custom_y}+100+100'"}} 

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  def check_attributes(user)
    updated_user = user
    if user.name != user.fb_data.name # update name if user e.g. changed it, it's missing, etc.
      updated_user.name = user.fb_data.name
    end
    if user.gender != user.fb_data.gender
      updated_user.gender = user.fb_data.gender
    end
    if user.age != user.fb_data.age
      updated_user.age = user.fb_data.age

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class CustomUser
  def initialize(name)
    @name = name
  end
end