Thanks Chuck - I haven't had a chance to try this out yet, but greatly appreciate the effort you've gone to in fitting an example to my use case.
I'll let you know how it works out. Simeon. On Mon, Aug 2, 2010 at 2:44 AM, <[email protected]> wrote: > After I wrote the acts_as_tree recipe, I wrote another tag definition that > iterates over an acts_as_tree model and displays the cards of an associated > has_many model. This will not work precisely the way you want for your use > case, but might spur some ideas. > > Example: > > class Question < ActiveRecord::Base > hobo_model > fields do > name :string > parent_id :integer > end > > has_many :answers > belongs_to :answer > acts_as_tree > end > > class Answer < ActiveRecord::Base > hobo_model > fields do > name : string > end > belongs_to :question > has_one :another_question_to_ask, :class_name => 'question' > end > > In application.dryml: > > <extend tag="index-page" for="Question"> > > <old-index-page merge> > > <after-new-link:><p><br/>Click a question to view > answers.</p></after-new-link:> > > <!-- Remove pager control --> > > <top-page-nav: replace /> > > <collection: replace> > > <hierarchical-collection with="&Question.all" to="answers"> > > <append-close-button:> > > <a:answers action="new" > if="&can_create?(this.answers)"> > > <ht key="answers.actions.new"> > > New Answer > > </ht> > > </a:answers> > > </append-close-button:> > > </hierarchical-collection> > > </collection:> > > <!-- Remove pager control --> > > <bottom-page-nav: replace /> > > </old-index-page> > > </extend> > > > <def tag="hierarchical-collection" attrs="to"> > > <% > > def tree_h(acts_as_tree_set, init=true, &block) > > @@level = 1 if init > > if acts_as_tree_set.size > 0 > > acts_as_tree_set.collect do |item| %> > > <do with="&item"> <% > > next if item.parent_id && init > > @@level += 1 > > yield item > > tree_h(item.children, false, &block) if > item.children.size > 0 > > @@level -= 1 %> > > </do> <% > > end > > else > > %>(none)<% > > end > > end > > tree_h(this, true) { |item| > > item_for = to.nil? ? item : item.send(to) %> > > <%= "<h#{@@level}>" %> > > <a href="#" > onclick="Effect.BlindDown('hierarchy-collection-#{item.typed_id.gsub(':','-')}'); > return false;" param="hierarchy-link"> > > <%= item.name + (" (#{item_for.count})" if > item_for.respond_to?('count')) %> > > </a> > > <%= "</h#{@@level}" %><% > > if item_for.respond_to?('count') %> > > <div > id="hierarchy-collection-#{item.typed_id.gsub(':','-')}" style="display: > none" param="hierarchy-section"> > > <div class="close-button" param="close-button"> > > <a href="#" > onclick="$('hierarchy-collection-#{item.typed_id.gsub(':','-')}').hide(); > return false;">close</a> > > </div> > > <collection with="&item_for" param="items" /> > > </div><% > > end > > } > > %> > > </def> > > --- On *Sat, 7/31/10, Simeon Theobald <[email protected]>* wrote: > > > From: Simeon Theobald <[email protected]> > Subject: Re: [Hobo Users] Multiple models in one tree? > To: [email protected] > Date: Saturday, July 31, 2010, 12:19 AM > > Okay - a rough outline: > > A question has many potential answers. Each answer can lead to a number of > questions. An example would be: > > +Would you like Coffee or Tea? [Question] > - Coffee [Answer] > +De-Caff or Regular? [Question] > -De-Caff [Answer] > -Regular [Answer] > +Moccona or Nescafe [Question] > -Tea [Answer] > > I can't see that recursive nesting of two trees should be a problem given > that we can pass in the "parentid" (which incidentally I need to figure out > how to specify differently), the problem at the moment is that I can't see a > way to pass the current "id" to the alternate model's tree as a "parentid". > > I'd eventually like to include links to add "children", or edit/remove the > current node. That functionality further complicates things in that it will > involve manipulating records in the intermediary tables as well as the leaf > level. Nesting sure messes with your frame of reference! > > First things first though, I need to get a tree out somehow.. > > On Sat, Jul 31, 2010 at 12:43 PM, Chuck Benedict > <[email protected]<http://mc/[email protected]> > > wrote: > > Give me a use case and I'll be glad to add my $0.02 > > Sent from my iPhone > > On Jul 30, 2010, at 5:02 AM, Simeon > <[email protected]<http://mc/[email protected]>> > wrote: > > The learning curve gets steep in a hurry around these parts! > > The "Hierarchies - Using acts_as_tree" recipe deals nicely with a self > referencing model (category belongs to category) but it takes on the > context of the model containing the call. I have yet to find reference > to a similar solution involving multiple (nested) models. > > Is it possible, and how would I go about starting to figure it out? > > Thanks for your thoughts! > > > -- > You received this message because you are subscribed to the Google Groups > "Hobo Users" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<hobousers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/hobousers?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Hobo Users" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<hobousers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/hobousers?hl=en. > -- You received this message because you are subscribed to the Google Groups "Hobo Users" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/hobousers?hl=en.
