Hello Gabriele,
Are you sure there is some data to return from the table? Check that
the find_by_sql call returns nil or has an array.
Why not skip the find_by_sql and use an ActiveRecord calculation
method? example:
category_counts = MyModelThatUtilizesTables1.count( :all,
:group => ['category'],
:order => ['category'])
You'll get back an array to process in your view. You can add
a :conditions argument too.
Then in your view check category_counts.nil? or category_counts.size
== 0 (can't remember if it returns nil or an empty array)
-Jim
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