Rails - Jan 2006 - inserting column headings between grouped rows

Hello all,

I have what is conceptually a pretty simple poblem, but can''t think of
an obvious solution.  I have a group of objects (@items), that I wish
to render as rows.  Items have dates, and I wish to group them by that
date, inserting a header row each time the date changes e.g.:

 header row
 row 11/11/2004
 row  11/11/2004
 header row
 row 11/23/2004

I''m currently rendering the rows like so:

  render :partial => ''item'', :collection => @items

I''m curious if there''s a a way to keep track of a date value
between
insert a spacer each time it changes.  I couldn''t find one looking
over the docs.  Anyone had to deal with this?

As always, any help is greatly apreciated,

pt.
--
Parker Thompson
http://www.parkert.com/
510.541.0125

Parker:

I hope someone will offer one of those super-efficient solutions. For  
now, I''d do what you want without using the partial.  I''d do:

@items.each do |item|

then I could just check the date field against the previous entry and  
use an if block to display the row header when the date changes.

That said, there is probably something much better.  Thanks for the  
question, I look forward to the answer.

bruce





On 24-Jan-06, at 11:47 PM, Parker Thompson wrote:
> Hello all,
>
> I have what is conceptually a pretty simple poblem, but can''t
think of
> an obvious solution.  I have a group of objects (@items), that I wish
> to render as rows.  Items have dates, and I wish to group them by that
> date, inserting a header row each time the date changes e.g.:
>
>  header row
>  row 11/11/2004
>  row  11/11/2004
>  header row
>  row 11/23/2004
>
> I''m currently rendering the rows like so:
>
>   render :partial => ''item'', :collection => @items
>
> I''m curious if there''s a a way to keep track of a date
value between
> insert a spacer each time it changes.  I couldn''t find one looking
> over the docs.  Anyone had to deal with this?
>
> As always, any help is greatly apreciated,
>
> pt.
> --
> Parker Thompson
> http://www.parkert.com/
> 510.541.0125
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails

Might not be really flashy, but it works:

current = nil
@items.each do |item|
  if(current != item)
    print_your_row_header()
    current = item
  end
  print_the_item()
end


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