finding and nils
Reported by Xavier Noria | December 23rd, 2007 @ 10:57 AM | in Second Edition
To ponder for section "Advanced Finding/Conditions":
When you write "column = ?" or "column = :foo" you need to be certain the value to test is not nil. Otherwise you'd need to special-case that SQL to generate "column IS NULL" if needed.
Dynamic finders and hashes for :conditions deal with nil values automatically, generating the right SQL syntax out-of-the-box.
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Obie