I am trying to refactor my code to use 'acts_as_tree'.
I have a self-referencing model called Property (<ActiveRecord) which currently has the usual belongs_to and has_many declarations:
belongs_to :collection, :class_name => "Property", :foreign_key => "collection_id" has_many :collected_properties, :class_name => "Property", :foreign_key => "collection_id"
I'd like to replace these with an 'acts_as_tree'.
In my controller 'create' method currently I have the following code:
# create a new Property of the correct sub class @property = Property.factory(params[:which_type], params[:property]) # if adding a child to a root - not always the case! if @flash[:is_collection] then # this finds the immediate root (root id stored in flash) root=PropertyCollection.find(@flash[:collection_id]) # this updates the foreign key collection_id in my new child row @property.collection = root end # save the new row if @property.save flash[:notice] = 'Property was successfully created.' redirect_to :action => 'list' else render(:partial => params[:controller]+"/"+params[:picklist][:pick]) end end
How would I refactor the @propery.collection = root and @property.save lines to make use of 'acts_as_tree'. I note that in the Agile Web Dev with Rails book that you can write:
root.children.create(...) but not sure how to change this to make use of the save() and my instance variable @property
Thanks, Lee.
