Rails - Aug 2005 - Results in HABTM; strange or no return

I have a habtm relationship and want to return a category for an  
article. for some reason it wants to return strange values and no  
results.  I get this error doing a reference

undefined method `name'' for #<Array:0x22ef54c>

Here''s the code excerpts:

#Article Model
has_and_belongs_to_many :categories

#Category Model
has_and_belongs_to_many :articles

#Articles Controller has this variable used in the erb below
#edited
         @article = Article.find(:all, :conditions => ''published =  
1'', :order => ''articles.created_at DESC'', :include
=>
[:categories, :comments, :user])

index.rhtml
<% @article.each do |article| -%>
<div class="post">
<h2><%= link_to article.title, :action => "post", :id
=> article %></h2>
<small>Published in <%= link_to "#{article.categories.name}",
:action
=> "category", :id => article.categories.id %>

#blah blah blah

<% end -%>

why does categories.id return a strange array of numbers and it say  
there is no method "name" when there is a column with
"name"?  I have
no problems with any other type of relationships except the habtm,  
which I need the many-to-many relationship here.  What am I doing wrong?

The Foreign Keys are there and correct, that was the first thing I  
checked.  And this type of declarations work else where, is there  
something else I''m missing.

J Brien | HybridIndie Productions | hybridindie.com |  
iam-QLwuMy0vUAhCl22TKe+ceQ@public.gmane.org

On 8/22/05, J Brien <iam-QLwuMy0vUAhCl22TKe+ceQ@public.gmane.org> wrote:
> index.rhtml
> <% @article.each do |article| -%>
> <div class="post">
> <h2><%= link_to article.title, :action => "post", :id
=> article %></h2>
> <small>Published in <%= link_to
"#{article.categories.name}", :action
> => "category", :id => article.categories.id %>
> 
> <% end -%>
> 
Your habtm relationship means that each article in the above loop will
have multiple categories,  hence the pluralization
"article.categories".  You need to collect all the names from the
article.categories relationship with something like
article.categories.collect { block }.

Same goes for article.categories.id, there are (or the possibility
exists for) multiple id''s.

mark