Sharagoz -- wrote: > Can you show the full error message? In the code, I actually have: book = @student.books not book = @student.book
This is because in Student model, I have has_many :books And named_scope: named_scope :for_test, :include => :books, :conditions => ["books.location_id = site_id && books.book_state_id = 5"] And this is the full error: NoMethodError in StudentsController#student_test undefined method `id_num=' for #<Class:0x106036ea0> -- 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 rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.