Displaying 1 result from an estimated 1 matches for "category_maps".
2006 Apr 20
4
Many to Many Category structure with itself
...led "categories" have a many to 
many relationship with itself. But I also want each catagory to be able 
to be "copied" into another category so it is essentially a child 
category to more than one parent. To me the obvious way of doing this is 
by creating another table called category_maps (and a model called 
CategoryMap). The category_maps table would keep the parent_id/child_id 
relationships for the categories table.
As far as the user experience, I want it to work so if you go to 
controllername/list_cats (with no id) it will display all cats with a 
parent_id of 0. If they go t...