On Sunday 29 November 2009 09:55:46 pm Paul McNett wrote:
> [moved to dabo-dev]
>
> Ed Leafe wrote:
> > modified: used to determine isChanged(), and included in INSERT.
> > default: not used to determine isChanged(), but included in INSERT.
> > blanks: not used to determine isChanged(), and not included in INSERT.
>
> +1, but we need a better way to flag blanks. I propose defining a string or
> class in dabo.db called DaboBlankField or "^^^DaboBlankField^^^". The
> cursor fills in the blanks with this value. The UI controls display the
> proper rendition of blank in the context of how the control works ("" for
> textbox, 0 for spinner, etc.)
>
> Paul
Playing devils advocate how does a developer force a blank string ('') or a
zero value for the spinner. And in the case of a spinner what if I wanted -1
to be the no value indicator?
Another question I have has to do with checkboxes. What is
the "^^^DaboBlankField^^^" field value of a checkbox? Afterall it has three
values - checked, unchecked, no value?
What about list values - is it possible to have a "^^^DaboBlankField^^^"
value for a list? I use lists for DB values all the time. I see this being
very difficult to work with - the list has to have the value in the list that
is in the DB.
Johnf
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