How to implement a self referencing (parent_id) model in cakephp

Question

I have a table called categories. The table holds categories and their sub(subsub)categories...

Its an easy table:

• id
• parent_id
• title

Answer 1

Look at the tree behaviour; with MPTT logic. The link supplied to Oracle's website is dead; but you can find a bunch of material about how to use it on the cake manual and online.

CREATE TABLE categories (
    id INTEGER(10) UNSIGNED NOT NULL AUTO_INCREMENT,
    parent_id INTEGER(10) DEFAULT NULL,
    lft INTEGER(10) DEFAULT NULL,
    rght INTEGER(10) DEFAULT NULL,
    name VARCHAR(255) DEFAULT '',
    PRIMARY KEY  (id)
);

Just make sure your table matches that structure for best results within Cake and it's baking.