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On Fri, 2004-02-27 at 14:55, Asad Habib wrote:
<BLOCKQUOTE TYPE=CITE>
<PRE><FONT COLOR="#40a3c5"><I>I have a field in my MySQL database which is allowed to be null and has a
value of NULL as default. I am retrieving this field and numerous others
using a call to dtml-in. After the retrieval, I would like to determine
what this value is inside my DTML document/method. What is the equivalent
of NULL in Zope? Is it a value of 'None'?
I am using the following code but it doesn't work.
<dtml-if expr="undergraduate_projects_directed == 'None'">
<dtml-call "REQUEST.set('undergraduateProjectsDirected', 'Hello')">
</dtml-if></I></FONT></PRE>
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<BR>
I use PostgreSQL and Oracle.<BR>
For each of them, I generally do this :<BR>
<BR>
<dtml-unless undergraduate_projects_directed><BR>
...<BR>
</dtml-unless><BR>
<BR>
<BR>
Thierry<BR>
<BR>
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