Rails - Mar 2006 - How to save parent and child objects in a single action?

Hi!

I''m struggling with it for a week. I posted a few similar posts that 
cleared up few things (thanks Mark!), but i still don''t know how to do 
it properly.

What i''m trying to do is to create parent object and its many children 
(images - i tried using file_column, but it''s a topic for another 
post)using data from a single form.

I''ve got a working version of it, but i can''t validate
anything because
the code doesn''t work properly, when data doesn''t pass
validation.

To simplify things: how to write code for a controller that will save 
parent object, its child object and will work with validation? I mean if 
any object fails validation, the data for all objects will be available 
for editing (correcting) and all objects will be saved only if they all 
pass validation.

Thanks in advance for any help.

-- 
Posted via http://www.ruby-forum.com/.

szymek wrote:
> To simplify things: how to write code for a controller that will save 
> parent object, its child object and will work with validation? I mean if 
> any object fails validation, the data for all objects will be available 
> for editing (correcting) and all objects will be saved only if they all 
> pass validation.
valid_images = @images.inject(true) { |v, i| v = i.valid? && v }
if @parent.valid? && valid_images
   @parent.images << @images
   @parent.save(false)
   redirect_to :action => ''show_parent''
end

-- 
We develop, watch us RoR, in numbers too big to ignore.

Thanks once again!

-- 
Posted via http://www.ruby-forum.com/.

I haven''t used it so I might be wrong, but maybe look into model
transactions?

Dave
 

-----Original Message-----
From: szymek [mailto:g0nzo@o2.pl] 
Sent: Tuesday, March 14, 2006 3:16 PM
To: rails@lists.rubyonrails.org
Subject: [Rails] How to save parent and child objects in a single action?

Hi!

I''m struggling with it for a week. I posted a few similar posts that
cleared
up few things (thanks Mark!), but i still don''t know how to do it
properly.

What i''m trying to do is to create parent object and its many children
(images - i tried using file_column, but it''s a topic for another
post)using
data from a single form.

I''ve got a working version of it, but i can''t validate
anything because the
code doesn''t work properly, when data doesn''t pass validation.

To simplify things: how to write code for a controller that will save parent
object, its child object and will work with validation? I mean if any object
fails validation, the data for all objects will be available for editing
(correcting) and all objects will be saved only if they all pass validation.

Thanks in advance for any help.

--
Posted via http://www.ruby-forum.com/.
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