Thanks Eric. That sounds great.

How though would I create a form_for on a relation table. There is no actual
object, or fields of an object.



On Wed, Apr 1, 2009 at 11:59 PM, Eric <[email protected]> wrote:

>
> This is part of what has_many :through is for. You already have an
> enrollments model, so you can just create a controller for it, adding
> extra attributes where necessary (cancelled, etc.).
>
> -eric
>
> On Apr 1, 11:38 am, mark_d <[email protected]> wrote:
> > Hi.
> >
> > I have a problem deciding the best way to manage a many_to_many
> > relationship.
> >
> > It define the relationships as so:
> > [code]
> > ## models
> > # student model
> > student has_many subjects :through => :enrollments
> >
> > # subject model
> > subject has_many students :through => :enrollments
> >
> > # enrollments model
> > belongs_to  :student
> > belongs_to  :subject[/code]
> > How can I have a separate controller to manage a students enrollments
> > from one page? Imagine a student page with radio buttons defining
> > their relationship with a subject, something like [enrolled, deferred,
> > cancelled] for example. This would surely be a one_to_one relationship
> > from a routing perspective. My idea was to define this extra
> > controller but I'm quickly thinking I'm going the wrong way with this.
> > [code]
> > map.resources :student, :has_one => :curriculum, :except =>
> > [:new, :create][/code]
> > Within the controller and the view, what would the form_for be for?
> > There is no curriculum model, and I can't have a form_for a
> > relationship (can I?).
> >
> > Thanks in advance.
> >
>

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