Rails - Aug 2005 - How to: 1 Exercise with 4 Answers

Hello Rails fellas,

First of all I am a Rails n00b, only using it for about 2 weeks but I
already love it and bought the Agile Webdevelopment book.
I could set up my first rails application within minutes like it was
promised in the video.
Now I have run into a problem that I cannot solve my self, due to the lack
of understanding Ruby and of course Rails.

I have the following 2 classes:

class Exercise < ActiveRecord::Base
    has_many :Answers
End

class Answer < ActiveRecord::Base
    belongs_to :Exercise
    
    validates_presence_of :text, :score
    validates_numericality_of :score   
End

Now I want to prepare a form in a view in which the user can add/change 4
answers for 1 exercise.
So I think the ''new'' action of the (exercise)controller should
create 4
answer objects and add them to the exercise. How do I do that? And how do I
have to create the form input fields for each answer?

I also want to make sure that each exercise only got 4 answers. I think that
could be validated somehow in the model using
''self.Answers.count''?

The database is already set up, ''answers'' table has a field
exercise_id.

Any help would be greatly appreciated,
Phil