CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-5ancestry
Sachin Singh
Sachin Singh

Reputation: 7225

Change parent of existing node that has children

I am using rails 5 with ancestry gem. I have a Group model, and its records are already arranged in a tree. Now I pick up a group randomly which has children and try to change it's parent_id. The group object gets saved but the tree structure does not change as expected i.e. only one node gets moved not its children. Here is my code:

  def change_hierarchy(parent)
    if valid_move?(parent)
      self.parent_id= self.read_attribute(:parent_id) + '/' + parent.read_attribute(:parent_id)
      self.save
      true
    else
      false
    end
  end

Upvotes: 0

Views: 383

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