While my hierarchical-collection tag for sure works, because I pulled it out of a working application, and the acts_as_tree recipe works, because I specifically went through the steps, I did not test the suggestion presented below (which is why I did not yet add it to the recipe). Will try to do that in coming days. Parent id is most definitely required to make act_as_tree work, but it refers to a question (it's parent), not an answer. The way I envisioned your use case was that another_question_to_ask would refer to the next question. So you have a hierarchy of questions, with answers pointing you to somewhere within the hierarchy.
--- On Tue, 8/3/10, kevinpfromnm <[email protected]> wrote: From: kevinpfromnm <[email protected]> Subject: [Hobo Users] Re: Multiple models in one tree? To: "Hobo Users" <[email protected]> Date: Tuesday, August 3, 2010, 11:26 AM you might need to define it with a belongs_to for hobo/rails to be more aware of it. belongs_to :parent, :class_name => "Answer" On Aug 3, 4:17 am, Simeon Theobald <[email protected]> wrote: > Once we get this working, I'd be only too happy to make a recipe. > > We're not there yet though. > > I'm not sure how the parentid aspect of the example should work - at the > moment it doesn't seem to have any function (when I removed it, nothing > obviously changed). > > It seems to me that we need to somehow make hobo aware that the parentid > refers to an answer record. I'm not yet in a position to intuitively > understand how that would be done.. > > Another thought - given that the original acts_as_tree recipe works so > nicely, should I be considering a Single Table Inheritance solution here > ?<DBA_shudder/> > We can get the desired functionality when the model is self referencing > (category has_many:categorys), but the same seems to be more difficult - > conceptually at least - with multiple model recursion. > > Simeon. > > On Tue, Aug 3, 2010 at 11:41 AM, Owen At Barquin <[email protected]> wrote: > > > Yes, that would great. Or a github gist. > > > ------------------------- > > Owen Dall > > Chief Systems Architect > > Barquin International > > 410-991-0811 > > > On Aug 2, 2010, at 7:22 PM, "[email protected]" <[email protected]> > > wrote: > > > > I bet this this look better in a pastie. Kind of hard to see the > > > format. > > > > On Aug 2, 2:39 pm, Owen Dall <[email protected]> wrote: > > >> Wow - nice example! > > >> -Owen > > > >> On Mon, Aug 2, 2010 at 5:02 PM, Simeon Theobald > > >> <[email protected]>wrote: > > > >>> 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]> > > <hobousers%2bunsubscr...@googlegroups .com> > > >>>> . > > >>>> 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]> > > <hobousers%2bunsubscr...@googlegroups .com> > > >>>> . > > >>>> 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]> > > <hobousers%2bunsubscr...@googlegroups .com> > > >>> . > > >>> For more options, visit this group at > > >>>http://groups.google.com/group/hobousers?hl=en. > > > >> -- > > >> - Owen > > > >> Owen Dall, Chief Systems Architect > > >> Barquin International > > >> Cell: 410-991-0811 > > > > -- > > > 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 > > ... > > read more » -- 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. -- 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.
