Question

I edited this message do to sloppiness and changes.

def student_test
@student = Student.for_test.find(params[:id]) if params[:id]
@student ||= Student.new
run_sequence :testize
end

def test_finalize
Student.transaction do
if (params[:student]) and @student.update_attributes(params[:student])
  @student.test!
end

room = Room.new(:room_num => 5)
room.save

book = @student.books
book.id_num = room.id
book.save
end
end

This returns this error message:
undefined method `id_num=’

Is this because there is more than 1 book record being passed into book?

Any suggestions? Thanks.

Answer 1

Assuming Student has a has_many relationship to Book, then @student.books is returning an array of book records, so you’ll need the following:

books = @student.books
books.each do |book|
  book.id_num = room.id
  book.save
end