Sailias

   1. def find_commentable  
   2.   params.each do |name, value|  
   3.     if name =~ /(.+)_id$/  
   4.       return $1.classify.constantize.find(value)  
   5.     end  
   6.   end  
   7.   nil  
   8. end  

Sailias

>> @article = Article.new
@article = Article.new

=> #<Article id: nil, created_at: nil, updated_at: nil>

>> @article.comments.build(:content=>"Hello")
@article.comments.build(:content=>"Hello")

=> #<Comment id: nil, created_at: nil, updated_at: nil, content: "Hello", commentable_id: nil, commentable_type: "Article">

Sailias

class Comment < ActiveRecord::Base
  belongs_to :commentable, :polymorphic=>true
end

class Article < ActiveRecord::Base
  has_many :comments, :as => :commentable
end


###############################################

Sailias

@comment.update_attributes(:commentable_id=>nil, :commentable_type=>nil)

=> true

>> @comment.reload
@comment.reload

=> #<Comment id: 2, created_at: "2010-04-29 14:54:07", updated_at: "2010-04-29 15:05:32", content: "Hello", commentable_id: nil, commentable_type: nil>

>> @comment.commentable

Sailias

 # AJAX request: This adds line items to cart. 
  def add_line_item_to_cart
    #Get current_cart object
    current_cart
    
    quantity = params[:quantity].to_i
    id = params[:id].to_i
    line_item = LineItem.find_or_create_by_cartridge_id_and_cart_id(id, current_cart.id)
    
    line_item.quantity = line_item.quantity.to_i + quantity

Sailias

  def show
    
    authorize! :assignment, :show
    
    @assignment = Assignment.find(params[:id])

    @related_logs = @assignment.assignment_logs.page(params[:page]).per(4).order('assignment_logs.date DESC').includes(:user)    

    # do a find to find and order candidates by there current employment
    @candidates = AssignmentList.where('assignment_lists.assignment_id = ?', @assignment.id)

Sailias

scope :current, where(:current=>true}

validate :only_one_current

protected


def only_one_current
 errors.add_to_base("Only one event can be current") if Event.current.reject{|c| c.eql?(self)}.size>0 
end

Sailias

<%= select_tag :other_select, options_for_select(@collection) %>

Sailias

SELECT my_ships.id as ship_id, (
	SELECT planets.id 
	FROM planets 
	WHERE id NOT IN(SELECT id FROM planets WHERE conqueror_id=2599)
	ORDER BY SQRT(((planets.location_x::bigint+-my_ships.location_x::bigint)^2)  + ((my_ships.location_y::bigint-planets.location_y::bigint)^2)) 
	ASC OFFSET 0 LIMIT 1) as planet_id
FROM my_ships;

Sailias

schemaverse=> NOTIFY jdcyekurqi, 'some text';
NOTIFY
schemaverse=> SELECT 1;
 ?column? 
----------
        1
(1 row)