MPTtree Model: Database Error

[eluser]lightnb[/eluser]
[quote author="m4rw3r" date="1206378734"]It seems like it cannot find a root node. Do you have a root node in your tree?[/quote]

Thanks, the database was the problem. I had been trying a different Tree Traversal Library before, and it looks like it had messed up all the left and right values in the database.

Is there a function in your library that can print a hierarchy indented list of topic names? (Or one that returns a depth value and a topic name in an associative array?) I'd like to get a human readable list of the topics like:

Code:

Bird
   Parrot
   Robin
Food
   Pizza
      Pepperoni
      Cheese
   Cat