Module: Mongoid::Tree::RationalNumbering::ClassMethods

Defined in:
lib/mongoid/tree/rational_numbering.rb

Overview

included do

Instance Method Summary collapse

Instance Method Details

#rekey_all! ⇒ Object

Force all rational number keys to update

Can be used to remove any “gaps” that are in a tree

For large collections, this uses a lot of resources, and should probably be used in a backround job on production sites. As a rational tree works just fine even if there are missing items, this shouldn’t be necessary to do that often.



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# File 'lib/mongoid/tree/rational_numbering.rb', line 67

def rekey_all!
  # rekey keys for each root. will do children
  _pos = 1
  root_rational = RationalNumber.new
  self.roots.each do |root|
    new_rational = root_rational.child_from_position(_pos)
    if new_rational != root.rational_number
      root.move_to_rational_number(new_rational.nv, new_rational.dv, {:force => true})
      root.save_with_force_rational_numbers!
      # root.reload # Should caller be responsible for reloading?
    end
    root.rekey_children
    _pos += 1
  end
end