This is because your models are included in other class Finance, and it is very possible for developer to make a mistake understanding of paths or whatever stuff which uses .model_name of your classes.
In your case, the concern is - route: namespace :finance do resources :bill_recs do resources :bill_rec_off end end generated 'finance_bill_rec_bill_rec_off_path()' - thats right in 'namespace' logic. 'finance' part in this route is just because you pass the argument 'namespace' and not because your model_name is 'finance_bill_rec'. But the <%= form_for([@bill_rec, @bill_rec_off]) do |f| %> uses .polymorphic_path() method, and returns you 'finance_bill_rec_finance_bill_rec_offs_path'. Twice 'finance' in that case is because .model_name returns 'finance_bill_rec' and 'finance_bill_rec_off' - thats the clear and real path name you should implement. Yeah, we'd better always let Rails operate on their own methods, hidden from us, like .model_name() or .polymorphic_path(). Ok, working with route: 'namespace :finance do ..' - is this really what you looking for? I think you just want to operate with your models under browser's string '/finance/...', right? Try another approach for that: resources :bill_recs, :path => '/finance' do resources :bill_rec_off end OR scope "/finance" do resources :bill_recs do resources :bill_rec_off end end Anyway, you should implement 'finance_bill_rec_finance_bill_rec_offs_path' without 'namespace' On 30.07.2012, at 2:08, Marcelo Junior <[email protected]> wrote: > I have the follow models in Finance module: > > class Finance::BillRec < ActiveRecord::Base > ... > has_many :bill_rec_offs, :dependent => :destroy > ... > end > > class Finance::BillRecOff < ActiveRecord::Base > ... > belongs_to :bill_rec > ... > end > > I'm doing this on my form_for: > > <%= form_for([@bill_rec, @bill_rec_off]) do |f| %> > ... > <% end %> > > routes.rb > > namespace :finance do > resources :bill_recs do > resources :bill_rec_offs > end > end > > And the error: > > undefined method `finance_bill_rec_finance_bill_rec_offs_path' for > #<#<Class:0x000000070757e0>:0x0000000708bec8> > > However, the route finance_bill_rec_bill_rec_off_path(@bill_rec_off) > works well. > > How can I do on a form_for with namespace and nested routes with module? > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" 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 https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" 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 https://groups.google.com/groups/opt_out.
