On May 21, 2010, at 8:27 PM, tjg wrote:
Hi Kevin,
Nope, can't check for nil on the attribute since that calls the
attribute accessor causing recursion and an eventual segmentation
fault.
There's always
def instrument_no
"%0.3f" % read_attribute(:instrument_no) rescue nil
end
(or rescue '0.000' - your call) which will ensure that the % can't
cause problems.
Out of curiosity, is :instrument_no an actual float value? The above
will cause problems if you try to do math with it (as it's returned as
a string). If it's not something you'd expect to do math on, but just
a "number with 3 digits after the decimal", I'd highly recommend you
look into using a decimal type.
--Matt Jones
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