tree.rb

Path: lib/hirb/helpers/tree.rb
Last Update: Tue Apr 10 19:43:16 -0400 2012

Base tree class which given an array of nodes produces different types of trees. The types of trees currently are:

  • basic:
     0
       1
         2
         3
       4
    
  • directory:
     0
     |-- 1
     |   |-- 2
     |   `-- 3
     `-- 4
    
  • number:
     1. 0
       1. 1
         1. 2
         2. 3
       2. 4
    

Tree nodes can be given as an array of arrays or an array of hashes. To render the above basic tree with an array of hashes:

  Hirb::Helpers::Tree.render([{:value=>0, :level=>0}, {:value=>1, :level=>1}, {:value=>2, :level=>2},
    {:value=>3, :level=>2}, {:value=>4, :level=>1}])

Note from the hash keys that :level refers to the depth of the tree while :value refers to the text displayed for a node.

To render the above basic tree with an array of arrays:

  Hirb::Helpers::Tree.render([[0,0], [1,1], [2,2], [2,3], [1,4]])

Note that the each array pair consists of the level and the value for the node.

[Validate]