Hi Kevin - that makes sense. Where I am confused is that the position column *is* being populated when the item is initially added to the list. If I create a new Activity and add three items to it, looking manually at the join table, the position column has 1,2,3, as positions. So I don't see where nil is an issue. The problem is that they do not update when dragged. That is when I get the "Unknown Attribute: position" error, and the column has not updated - is still 1,2,3
On Jun 10, 9:30 pm, kevinpfromnm <[email protected]> wrote: > position in list is relative. can't adjust one's point in list based > off a nil value. that'd be my guess since you said the column was > present. > > On Jun 10, 3:39 pm, Ronbo <[email protected]> wrote: > > > Ok, thanks. > > > I'm not sure either what you mean by this (referring to the position > > column not updating: > > > (not available) means nil value IIRC. since you had existing values, > > you'll need to populate the values. > > > Since I get "unknown attribute: position", is the problem that the > > unit model does not know where position is? Or is it some other issue? > > > On Jun 10, 5:35 pm, kevinpfromnm <[email protected]> wrote: > > > > that's what I meant. so the position would be per activity. > > > > On Jun 10, 3:21 pm, Ronbo <[email protected]> wrote: > > > > > Thanks Kevin, > > > > > Not sure what you mean about scope to activity. I have > > > > acts_as_list :scope => :activity on the join now. > > > > > On Jun 10, 2:27 pm, kevinpfromnm <[email protected]> wrote: > > > > > > (not available) means nil value IIRC. since you had existing values, > > > > > you'll need to populate the values. oh, you'll also need to scope the > > > > > acts_as_list to the activity as well > > > > > > On Jun 10, 8:49 am, Ronbo <[email protected]> wrote: > > > > > > > OK. I just added <view:unit_activity.position/> to the view and get > > > > > > (Not Available) when I render the page. > > > > > > > In the unit_activity table, the position column is being populated > > > > > > when the units are added to an activity, but not when reordered from > > > > > > the acts_as_list view. > > > > > > > Could this be a permission or scope problem caused by 'position' > > > > > > being > > > > > > on the join table? > > > > > > > Thanks, > > > > > > > On Jun 9, 5:28 pm, Ronbo <[email protected]> wrote: > > > > > > > > Yup. I have a 'position' column on the join table. > > > > > > > > On Jun 9, 5:06 pm, kevinpfromnm <[email protected]> wrote: > > > > > > > > > hmm... you've already done the migration after declaring the > > > > > > > > acts_as_list? > > > > > > > > > On Jun 9, 2:46 pm, Ronbo <[email protected]> wrote: > > > > > > > > > > Thanks again. The tips are really appreciated. > > > > > > > > > > I added the hobo_reorder as shown below. The page now renders > > > > > > > > > properly > > > > > > > > > (with the sortable-collection UI controls). > > > > > > > > > > class UnitsController < ApplicationController > > > > > > > > > hobo_model_controller > > > > > > > > > auto_actions :all > > > > > > > > > > def reorder > > > > > > > > > hobo_reorder > > > > > > > > > end > > > > > > > > > end > > > > > > > > > > The page now renders properly (with the sortable-collection UI > > > > > > > > > controls), but moving a list item fails to update the > > > > > > > > > position with > > > > > > > > > the following error: > > > > > > > > > ActiveRecord::UnknownAttributeError (unknown attribute: > > > > > > > > > position): > > > > > > > > > > I have the position declared on the join relation: > > > > > > > > > has_many :unit_activities, :order => :position > > > > > > > > > > Is this the right place, or is there something else I need to > > > > > > > > > tweak to > > > > > > > > > get this going? > > > > > > > > > I'm getting closer... > > > > > > > > > > On Jun 9, 2:46 pm, kevinpfromnm <[email protected]> > > > > > > > > > wrote: > > > > > > > > > > > you need the method on the controller for it, I can't > > > > > > > > > > remember if it's > > > > > > > > > > something special or just standard update methods. > > > > > > > > > > > On Jun 9, 12:41 pm, Ronbo <[email protected]> wrote: > > > > > > > > > > > > Hi Kevin, > > > > > > > > > > > > Do you mean something like: > > > > > > > > > > > > class Activity < ActiveRecord::Base > > > > > > > > > > > has_many :unit_activities, :order => :position > > > > > > > > > > > has_many :units, :through => :unit_activities > > > > > > > > > > > > .... > > > > > > > > > > > > class UnitActivity < ActiveRecord::Base > > > > > > > > > > > belongs_to :activity > > > > > > > > > > > belongs_to :unit > > > > > > > > > > > acts_as_list :scope => :activity > > > > > > > > > > > > ... > > > > > > > > > > > class Unit < ActiveRecord::Base > > > > > > > > > > > has_many :unit_activities > > > > > > > > > > > has_many :activities, :through => :unit_activities > > > > > > > > > > > > class ActivityHints < Hobo::ViewHints > > > > > > > > > > > children :units > > > > > > > > > > > > This generates a <collection:units param/> tag for the > > > > > > > > > > > Activities show > > > > > > > > > > > page. If I manually change it to > > > > > > > > > > > <sortable-collection:units param/>, I > > > > > > > > > > > get the following error: > > > > > > > > > > > > undefined method `reorder_units_url' > > > > > > > > > > > > Am I missing the gist of what you mean, or am I missing a > > > > > > > > > > > step? Do I > > > > > > > > > > > need to pass something to sortable-collection? > > > > > > > > > > > > Thanks, > > > > > > > > > > > > On Jun 9, 1:32 pm, kevinpfromnm <[email protected]> > > > > > > > > > > > wrote: > > > > > > > > > > > > > You want the acts_as_list and accessible on the join > > > > > > > > > > > > table, not the > > > > > > > > > > > > end table. that way, each item can be sorted per > > > > > > > > > > > > document. > > > > > > > > > > > > > On Jun 9, 9:08 am, Ronbo <[email protected]> wrote: > > > > > > > > > > > > > > Hi all, > > > > > > > > > > > > > > I am still very new to Hobo, and learning mostly > > > > > > > > > > > > > through trial and > > > > > > > > > > > > > error. I have been creating small throw-away apps to > > > > > > > > > > > > > explore and test > > > > > > > > > > > > > things out. > > > > > > > > > > > > > > I do have a serious app in mind though, and I am > > > > > > > > > > > > > trying to figure out > > > > > > > > > > > > > how to implement a specific workflow in which users > > > > > > > > > > > > > will create new > > > > > > > > > > > > > documents and add boilerplate text pieces to them > > > > > > > > > > > > > from a predefined > > > > > > > > > > > > > set. Since documents will have many pieces and a > > > > > > > > > > > > > piece can belong to > > > > > > > > > > > > > many documents, my first hunch is that I would use a > > > > > > > > > > > > > > has_many :through => x, :accessible => true > > > > > > > > > > > > > > sort of relationship, with the pieces as children of > > > > > > > > > > > > > the document > > > > > > > > > > > > > model. Users could create a new doc and add the > > > > > > > > > > > > > pieces they want. > > > > > > > > > > > > > Where I am having problems prototyping this is that > > > > > > > > > > > > > the pieces in the > > > > > > > > > > > > > doc should be sortable. I've hunted through the hobo > > > > > > > > > > > > > and rails forums > > > > > > > > > > > > > and can't find a recipe for how to make acts_as_list > > > > > > > > > > > > > work with a > > > > > > > > > > > > > joined many-to-many sort of relationship. > > > > > > > > > > > > > > Is this possible? If so, is there a better way of > > > > > > > > > > > > > defining the > > > > > > > > > > > > > relationship or some special magic to getting it > > > > > > > > > > > > > working through a > > > > > > > > > > > > > join? > > > > > > > > > > > > > > Any hints are much appreciated. -- 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]. 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