Rails - Feb 2006 - Saving a collection field with <<

I have habtm  relationship between articles and contributors. 
Everything''s working fine, except when I create a new article Rails 
doesn''t seem to save the contributors that belong to it into 
articles_contributors. This is the controller (that I pilfered from 
typo):

def new
    @article = Article.new(params[:article])
    [...]
    if request.post?
      @article.contributors.clear
      @article.contributors << Contributor.find(params[:contributors]) 
if params[:contributors]
      if @article.save
        [...]

This saves everything in the form, except the selected contributor(s). 
What''s driving me crazy is that I''m using exactly the same in
the edit
method and it works fine (the selected contributors get saved):

 def edit
    @article = Article.find(params[:id])
    @article.attributes = params[:article]
     [...]
    if request.post?
      @article.contributors.clear
      @article.contributors << Contributor.find(params[:contributors]) 
if params[:contributors]
      if @article.save
            [...]

Typo, where I basically stole this method, from uses the same technique. 
I don''t understand why it''s not saving when I create a new
record, but
then works when I do an edit. The form is the same obviously, and I''ve 
examined the param variables submitted and the contributors[] array is 
there with the values in it. It''s just not getting << into 
article.contributos or saved properly. I checked the models in typo to 
see if there were any special overloads for this, but there don''t seem 
to be.

I''m pulling my hair out with this problem, I know I must be missing 
something stupid. Thanks in advance to anyone who can help.

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

Damn word wrap. Those "if params[:contributors]" lines are actually at
the end of the lines above, not on a line by themselves.

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

Chris Johanesen wrote:
> I have habtm  relationship between articles and contributors. 
> Everything''s working fine, except when I create a new article
Rails
> doesn''t seem to save the contributors that belong to it into 
> articles_contributors. This is the controller (that I pilfered from 
> typo):
> 
> def new
>     @article = Article.new(params[:article])
>     [...]
>     if request.post?
>       @article.contributors.clear
>       @article.contributors <<
Contributor.find(params[:contributors])
> if params[:contributors]
>       if @article.save
>         [...]
> 
> This saves everything in the form, except the selected contributor(s). 
> What''s driving me crazy is that I''m using exactly the
same in the edit
> method and it works fine (the selected contributors get saved):
This is a known bug in ActiveRecord in Rails 1.0.  Either move
to Edge Rails or save @article before adding contributors.

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