Your problem was the relationship you describe is many units to variable, while you're trying to reference a single unit. Easier than having to do the find, is to use the associations themselves. v = Variable.create(...) v.units.create(...) #automatically assigns the newly created unit to v
On Jan 7, 9:48 pm, Mettadore <[email protected]> wrote: > Hi all, I just discovered Hobo and it seems great, but I'm trying to > wrap my head around the differences from Rails w/o Hobo (while I try > to wrap my head around Ruby/Rails, coming from Python). > > Anyway, I can't find any way to explicitly reference another column, > but it occurs to me that I may be misunderstanding how Hobo is using > tables. What I'm trying to do is seed my database with model > references, the way I've been able to do in vanilla Rails. > > I can simplify my application to two models to demonstrate: > > ------ > class Unit < ActiveRecord::Base > > hobo_model # Don't put anything above this > > fields do > name :string > abbr :string > dimensions :xml > timestamps > end > > belongs_to :variable > … > ---------------------- > class Variable < ActiveRecord::Base > > hobo_model # Don't put anything above this > > fields do > name :string > description :string > timestamps > end > > has_many :units > … > end > --------- > > What I'm trying to do is seed the database such as: > > Unit.create(:name => "fahrenheit", :abbr => "F", :dimensions => > '<dimensions temperature="1" />') > > Variable.create(:name => "temperature", :unit => Unit.find > (:first, :conditions => {:name => "fahrenheit"}), :description => > "Fahrenheit temp") > > but the db:seed command fails because :unit is an unknown attribute. > So, my question is how do I seed a database with references to other > models? > > Thanks, > -J
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