How about supplementing what you're already getting back w/a call like this:

@entries << Entry.find_by_sql('select sum(entries.price) as sum_price, 
"uncategorized" as category_name from entries where id not in (select entry_id 
from entry_categories)')

HTH,

-Roy

-----Original Message-----
From: rubyonrails-talk@googlegroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
ressister
Sent: Thursday, October 02, 2008 11:58 AM
To: Ruby on Rails: Talk
Subject: [Rails] Grouping data for charting


Hi there, I'm using Open Flash Chart to create a pie chart of user's 
categorized spending.  It currently includes only categories that I have in my 
Category model, but does not include "uncategorized"
entries which have no association in the entry_categories table.

I'd like to include those entries that are not categorized as well in my 
grouping so that I can display them in the pie chart as "uncategorized."  How 
would i do that?  Below is the SQL that successfully grabs categorized entries. 
 How would i retrieve and group uncategorized entries as part of this query?

@entries = Entry.find_by_sql ["SELECT sum(entries.price) AS sum_price, 
categories.name AS category_name, categories.color AS category_color
      FROM entries, categories, entry_categories
      WHERE entries.user_id = ? AND entries.id = entry_categories.entry_id and 
entry_categories.category_id = categories.id
      GROUP BY categories.id", current_user.id]

Thanks in advance.
-A


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