Thread: [neelix-devel] neelix/model model.rb,1.4,1.5

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Update of /cvsroot/neelix/neelix/model
In directory sc8-pr-cvs1:/tmp/cvs-serv27370/model

Modified Files:
	model.rb 
Log Message:
"Move Up" works! We may want to find some nicer way of doing the
promote/demote, but this was the only way I could get around the notify call
halfway through the swap (which is a Bad Thing [tm], since one of the
ingredients is just plain deleted if the notification happens too soon).


Index: model.rb
===================================================================
RCS file: /cvsroot/neelix/neelix/model/model.rb,v
retrieving revision 1.4
retrieving revision 1.5
diff -C2 -d -r1.4 -r1.5
*** model.rb	15 Dec 2003 20:11:54 -0000	1.4
--- model.rb	20 Dec 2003 06:38:35 -0000	1.5
***************
*** 41,44 ****
--- 41,65 ----
  end
  
+ class ObservableArray
+     # should these instead be in a subclass of ObservableArray?
+     def promote(obj)
+ 	i = self.index(obj)
+ 	return if i.nil? or i == 0
+ 
+ 	tmp = self[i]
+ 	send("__old_[]=", i, self[i - 1]);
+ 	send("__old_[]=", i - 1, tmp);
+     end
+     def demote(obj)
+ 	i = self.index(obj)
+ 	return if i.nil? or i == self.length - 1
+ 
+ 	tmp = self[i]
+ 	send("__old_[]=", i, self[i + 1]);
+ 	send("__old_[]=", i + 1, tmp);
+     end
+     wrap_method :promote, :demote
+ end
+ 
  class Food
      include Observable
***************
*** 166,169 ****
--- 187,202 ----
      end
  
+     def position
+ 	@dbh.select_one("select position from ingredient where ingredient_id=?",@id)['position']
+     end
+     def position=(p)
+ 	p2 = position
+ 	if p2 != p then
+ 	    @dbh.do("update ingredient set position=? where ingredient_id=?", p, @id)
+ 	    notify_observers
+ 	end
+ 	p
+     end
+ 
      def to_s
  	s = "#{quantity} #{measure} #{food}"
***************
*** 186,190 ****
  	@id = recipe_id
  	@ingredients = ObservableArray.new
! 	@dbh.select_all("select ingredient_id from ingredient where recipe_id=?", @id).each do |row|
  	    @ingredients << $replicator.get('ingredient', row['ingredient_id'])
  	end
--- 219,223 ----
  	@id = recipe_id
  	@ingredients = ObservableArray.new
! 	@dbh.select_all("select ingredient_id from ingredient where recipe_id=? order by position", @id).each do |row|
  	    @ingredients << $replicator.get('ingredient', row['ingredient_id'])
  	end
***************
*** 192,196 ****
  	    # which ingredients were previously in the DB?
  	    old_ingredients = Array.new
! 	    @dbh.select_all("select ingredient_id from ingredient where recipe_id=?",@id).each do |row|
  		old_ingredients << $replicator.get('ingredient', row['ingredient_id'])
  	    end
--- 225,229 ----
  	    # which ingredients were previously in the DB?
  	    old_ingredients = Array.new
! 	    @dbh.select_all("select ingredient_id from ingredient where recipe_id=? order by position",@id).each do |row|
  		old_ingredients << $replicator.get('ingredient', row['ingredient_id'])
  	    end
***************
*** 204,207 ****
--- 237,247 ----
  	    (old_ingredients - @ingredients).each do |ingredient|
  		@dbh.do("delete from ingredient where ingredient_id=?",ingredient.id)
+ 	    end
+ 
+ 	    # reorder the rows in the database
+ 	    position = 1
+ 	    @ingredients.each do |ingredient|
+ 		ingredient.position = position
+ 		position += 1
  	    end
  	}