# -*- encoding : utf-8 -*-
class TableRow < ActiveRecord::Base
  has_many :cel_tables, -> {order("position")}
  belongs_to :table_content
  
  attr_accessor :skip_before_update




	before_create do
		if !position
			self.position = 1
		end
		if position
			TableRow.find(:all, :conditions => ["position >= ? and table_content_id = ?",self.position,self.table_content_id]).each do |table_row|
				table_row.position = table_row.position + 1
				table_row.skip_before_update = true
				table_row.save!
			end
		end
	end

	before_update do
		if !skip_before_update
			if self.position_changed?
				#si la position est plus grande que l'ancienne
				if self.changes['position'][1] > self.changes['position'][0]
					TableRow.find(:all, :conditions => ["position > ? and position <= ? and table_content_id = ?",self.changes['position'][0],self.changes['position'][1],self.table_content_id]).each do |table_row|
						table_row.position = table_row.position - 1
						table_row.skip_before_update = true
						table_row.save!
					end
				end
				#si la position est plus petite que l'ancienne.	
				if self.changes['position'][1] < self.changes['position'][0]
					TableRow.find(:all, :conditions => ["position >= ? and position < ? and table_content_id = ?",self.changes['position'][1],self.changes['position'][0],self.table_content_id]).each do |table_row|
						table_row.position = table_row.position + 1
						table_row.skip_before_update = true
						table_row.save!
					end	
				end 
			end
		end
	end

	before_destroy do
		TableRow.find(:all, :conditions => ["position > ? and table_content_id = ?",self.position,self.table_content_id]).each do |table_row|
			table_row.position = table_row.position - 1
			table_row.skip_before_update = true
			table_row.save!
		end
		
		table = self.table_content
		table_past_count = table.nbr_rows
		table.nbr_rows = table_past_count - 1
		table.save

	end
  
  
end