Hi To test in python that a field from MySQL is null test for a None value. Like this: <dtml-if expr="undergraduate_projects_directed == None"> <dtml-call "REQUEST.set('undergraduateProjectsDirected', 'Hello')"> </dtml-if> without quotes Dragos ----- Original Message ----- From: "Asad Habib" <ahabib@engin.umich.edu> To: <zope@zope.org> Sent: Friday, February 27, 2004 3:55 PM Subject: [Zope] Detecting a NULL Value
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>
Any help would be greatly appreciated. Thanks.
- Asad
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