Rails - Mar 2006 - How do you display validation errors when validating child models?

I can''t seem to figure out how to get child validation error messages
to display.  I''m going through the simple blog example DHH uses in his
video.  In the example, a comment belongs_to a post.  Validating posts
works fine and the errors are displayed as they should be.  When I try
to validate a comment using:

validates_presence_of :summary

It does the proper validation by not inserting the comment, but the
validation error message isn''t displayed when the controller
redirects_to the ''show'' action.  So, any ideas about how to
get these
child validations to display properly in the parent''s view?

Thanks,
Bryce

Did you ever get this sorted? I am struggling with a similar situation, 
and feeling particularly brain-dead at the moment.
Chris T

Bryce Thornton wrote:
> I can''t seem to figure out how to get child validation error
messages
> to display.  I''m going through the simple blog example DHH uses in
his
> video.  In the example, a comment belongs_to a post.  Validating posts
> works fine and the errors are displayed as they should be.  When I try
> to validate a comment using:
>
> validates_presence_of :summary
>
> It does the proper validation by not inserting the comment, but the
> validation error message isn''t displayed when the controller
> redirects_to the ''show'' action.  So, any ideas about how
to get these
> child validations to display properly in the parent''s view?
>
> Thanks,
> Bryce
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>
>

Bryce Thornton wrote:
> I can''t seem to figure out how to get child validation error
messages
> to display.  I''m going through the simple blog example DHH uses in
his
> video.  In the example, a comment belongs_to a post.  Validating posts
> works fine and the errors are displayed as they should be.  When I try
> to validate a comment using:
> 
> validates_presence_of :summary
> 
> 
> Thanks,
> Bryce
OK, with the help of an another thread got this sorted, so if you''re 
still struggling this is how I did it (though there''s prob better
ways).

The problem (I think) is that I was svaing the parent-child relationship 
and with it the child. The child failed the validation but (and here
I''m
guessing) the error message was lost by the parent.save method. So I 
simply encased the parent.child save with an if child.valid? statement. 
Which threw me back to the form with the error messages and fields as 
before.

Except...[and I''m sure I saw the solution to this somewhere but
can''t
for the life of me find it now] the parent.id that was originally in the 
URL when the form was first visited (from a link: create a new child for 
this item), and was submitted with the other form items as a hidden 
field, is no longer there, and I can''t for the life of me think of an 
elegant way of keepiong in the form. Any ideas?

Chris T

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