I found your reply very helpful for other problems that I
had, but I
also discovered that this would work for what I wanted:
<%= link_to 'Add Interview', :controller =>
:interview, :action =>
'new', :interviewer_id => params[:id] %>
In this case interviewer is the owner and has many
interviews, so that
line goes in the show view for interviewer.
Worked great.
Joshua
On Sep 10, 5:15 pm, "James Herdman"
<james.herd... gmail.com> wrote:
> Hey Joshua.
> I have a pretty good idea what you're talking about,
but I'm also a tad
> groggy at the moment. Let's see what we can figure
out.
>
> So, let's talk about this "show owner" page.
If we're looking at this page,
> we already know who the owner is. Each owner has_many
pets, right?
> has_many gives us a whole pile of methods for freehttp://api.rubyonrails.org/classes/Acti
veRecord/Associations/ClassMet....
> This includes one to initialize part of an
association: build. This is
> what you're after.
>
> Your "show owner" page should have a link on
it somewhere to an action
> called #new on your PetsController. In #new,
initialize your pet like
> this:
>
> # In PetsController
> def new
> owner = Owner.find(params[:id])
> pet = owner.build(params[:pet])
> end
>
> Right away we're telling pet.owner_id to equal the
owner we have. It's not
> saved yet, so this isn't in the database. It's just
warmed up and ready to
> go.
>
> How's that sound?
>
> James H.
>
> On 9/10/07, joshualevy <joshual...yahoo.com> wrote:
>
>
>
> > I'd like to set up a button or link on one page,
that goes to a
> > "creation" page but has some of the
creation data already filled out.
> > This is what I'm trying to do:
>
> > In an app with two objects that have a "1 to
many" relationship (lets
> > say owners and pets, where each pet has one owner
but each owner can
> > have many pets), I want to put a button or link on
the "show owner"
> > page that does a "create a new pet owned by
this owner". I do NOT
> > want the user to have to specify the owner when
they create the pet;
> > it should already be done for them.
>
> > My first hope was to pass some extra data to the
link_to or button_to
> > call, so that some params would be set to the
owner_id, and then the
> > transfer to the pet/new page would happen. But I
don't see how to do
> > that.
>
> > My second hope was to store the owner_id in the
session, and then have
> > the pet/new page look in the session and
initialize the owner field,
> > if that data was in there. I do know how to do
that.
>
> > Any thoughts on how to do this the RoR way?
>
> > Joshua Levy
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