nestable_tree true is required

[vcavel]

Hi guys,

I have been struggling to make my tree work and I think that there is something missing in the README of the project!

I think that you forgot to mention that nestable_tree true is mandatory in the rails_admin.rb in order to have a fully functional drag and drop tree.

The full snippet for a tree would therefore be :

RailsAdmin.config do |config|
  config.actions do
    ...
  end

  config.model MyModel do
    nestable_tree({
      position_field: :position,
      max_depth: 3
    })

  nestable_tree true
  end
end

Whithout this line my tree was just acting weird, the hiearchy was not saved and nothing was really working as it should have. It would be nice to add it so someone else doesn't struggle like me :-).