Rails - Apr 2006 - Weird Problem - probably a noob mistake

I was up late last night trying to find the cause of this, but I''m 
stumped.

I have this relatively simple controller to load up a bio.  It''s
basicly
id, name, desc, type (I use STI).

class BioController < ApplicationController
    layout  ''layouts/singlepanel''

    def index
        @bio = Bio.find(:all, :conditions => [''site_id =
?'',
@session[''site''].id])
	render ''bio/index''
    end

end


However when I attempt to display the data in the view using this:
<h2> <%=@bio.name%> </h2>

I get an error:
undefined method `name'' for #<Array:0x3892618>

Here is the strange part:
1) I saved @bio to the session and looked at the contents and it all 
appears to be ok.
2)  If I change @bio = Bio.find(:all, :conditions => [''site_id =
?'',
@session[''site''].id]) to @bio = Bio.find(1) it works fine.
3) I ran the SQL using @bio = Bio.find(:all, :conditions =>
[''site_id =
?'', @session[''site''].id]) and it works fine.
4) When I display <h2> <%=@bio.type%> </h2> it displays
"Array" as
opposed to "Bio".

I''m sure I''m doing something wrong, but I can''t see
it at all.  Any
ideas?

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

Joe Cairns wrote:
> class BioController < ApplicationController
>     layout  ''layouts/singlepanel''
> 
>     def index
>         @bio = Bio.find(:all, :conditions => [''site_id =
?'',
> @session[''site''].id])
> 	render ''bio/index''
>     end
> 
> end
> 
> However when I attempt to display the data in the view using this:
> <h2> <%=@bio.name%> </h2>
> 
> I''m sure I''m doing something wrong, but I can''t
see it at all.  Any
> ideas?
What has been returned from the find :all is more than one object.  You 
can either use:

@bio.first.name
or
@bio.each do |b|
  ... (e.g. b.name)
end

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On 19 Apr 2006, at 15:26, Joe Cairns wrote:
> However when I attempt to display the data in the view using this:
> <h2> <%=@bio.name%> </h2>
>
> I get an error:
> undefined method `name'' for #<Array:0x3892618>
find(:all) will return an Array of matching objects, even if there''s  
only one that matches.

If you need just one object, replace :all with :first, and you''ll get  
a single object back.

Scott

Joe Cairns wrote:
> class BioController < ApplicationController
>     layout  ''layouts/singlepanel''
> 
>     def index
>         @bio = Bio.find(:all, :conditions => [''site_id =
?'',
> @session[''site''].id])
> 	render ''bio/index''
>     end
> 
> end
> 
> 
> However when I attempt to display the data in the view using this:
> <h2> <%=@bio.name%> </h2>
> 
> I get an error:
> undefined method `name'' for #<Array:0x3892618>
A few things :-)

1) @bio should actually be @bios as find(:all) returns an array. 
You''ll
need to iterate the array.  If you''re fairly sure there''s only
one with
that site_id, you can use find(:first... )instead (it''ll return a
single
@bio).

2) You don''t need the render call in the index method as it''ll
happen
automagically.

Alan

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David wrote:
> What has been returned from the find :all is more than one object.  You 
> can either use:
> 
> @bio.first.name
> or
> @bio.each do |b|
>   ... (e.g. b.name)
> end
Arrggh, Thank you!  I changed my find to:
@bio = Bio.find(:first, :conditions => [''site_id = ?'',
@session[''site''].id])

There can be only one of them, so I should have used '':first''.

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