Forum prototype - Constructive criticism requested.

[eluser]TheFuzzy0ne[/eluser]
The idea of not using the constructor for the forum object, was so you could initialise the object with either the ID, the lft, or rgt value of the forum. With the post object, I did the same for consistency. It just made sense to me that if the ID is set, then we should be loading an existing entry for editing.

I thought I'd give OOP a try as it's not something I've really done before. I just wanted something that made sense, was easy to maintain and scalable. I am self-taught, so I tend to learn by example, but it's a real painus in the anus then you can't find any examples...

Another reason I thought I should go with objects, is that some methods call others several times, and each time that method makes a call to the database. I wanted to cache certain nodes within the object, to save unnecessary database calls, for example "get_root", "next_sibling" and so on, but I think this is complicating things.

What ORM library do you use? I was checking out IgnitedRecord, and it seems to be incomplete(?).

Thanks again for your comments.