Avoiding N/A in numeric datafield : solution

Question

Hello,
I finally found the solution to my 'N/A' problem in Forte Documentation.
As with Excel, you can provide more than one template dependind on the
numeric value :
Here is the text :
The Template value can contain as many as four formatting templates,
separated by semicolons:
the first template applies to positive NumericData object values
the second template applies to negative NumericData values
the third template applies to zero values
the fourth template applies only to NULL NumericData object values.
So if you use a template like
0;-0;0;MyText
the string MyText will appear in place of N/A.
If you want an empty string, just put one more ; in place of myText
Eric Decossaux
Cliniques Universitaires St Luc
Informatique des Laboratoires
+32+2+764 17 53

Answer 1

I have managed to avoid the dreaded "N/A" for null values by fully
defining a template for the field in question. For example, a currency
field would use:
$#,##0.00;$#,##0.00;$#,##0.00;;
In order, these four templates are defined for positive values,
negative values, zero values, and null values. Defining the null
template as ";;" avoids the "N/A".
I have not however tried this with domain fields. This also does not
check for maximum values.
Dan.
--- Eric Decossaux <[email protected]> wrote:
>
Hello,
I would like to have a datafield which is empty (blank) if no value
was
specified and which displays the value if there is one. The value can
not exceed a maximum value.So I want to use a domain field to avoid
N/A
and to check maximum value
I defined a domain class with superClass= integerNullable, form
widget =
datafield and template=integer.
To avoid having 'N/A' in the field, I overrided the fillstring
method(target:textData) with the code :
if self.isNull then
target.SetValue('');
else
super.fillString(target);
end if;
BUT I still have 'N/A' in the field. What's wrong and how to avoid
this
problem.
Eric Decossaux
Cliniques Universitaires St Luc
Informatique des Laboratoires
+32+2+764 17 53
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