Ruby Forum Ruby on Rails > has_many/belongs_to question

Is it possible to automatically add data to the belongs_to end of a
hm/bt relationship?

For clarity, here are my models:

class Page; has_many :links; end
class Link; belongs_to :page; end


Is there anyway that I can do something like this:

Page.create( :name => 'foo', :links => [{:name => "bleh", :url =>
"www.bleh.com"}, {:name => "blah", :url => "www.blah.com"}] )


Right now I am doing something like this in my controller:

def create
  @page = Page.new(params[:page])
  links = params[:links]
  if @page.save
    links.each{|e| @page.links.create(:name => e[:name], :url =>
e[:url])
  end
end

But I feel there must be a more intuitive way of doing this.
Basically, I want to add my links collection (from a form at /pages/new)
to the page hash and create them automatically. Is this possible?

Hi,

I think you can say:

if @page.save
  @page.links.create(params[:links])
end


I think that's a happier way to say it :)

Julian.

Learn Ruby on Rails! Check out the FREE VIDS (for a limited time)
VIDEO #4 parts a and b now available!
http://sensei.zenunit.com/

Julian Leviston wrote:
> Hi,
> 
> I think you can say:
> 
> if @page.save
>   @page.links.create(params[:links])
> end
> 
> 
> I think that's a happier way to say it :)
> 
> Julian.
> 
> Learn Ruby on Rails! Check out the FREE VIDS (for a limited time)
> VIDEO #4 parts a and b now available!
> http://sensei.zenunit.com/

I have a feeling that;

@page = Page.new(params[:page])
@page.links = params[:links]
@page.save

will do all the saves in a nice transaction,
returning false, and having created no objects if any of the validation 
fails.

Haven't got anything set up to try it though.