Re: [Zope] Seing if an attribute exist in an ObjectManager

29 May 2001

      On Tue, 29 May 2001, [iso-8859-1] Max M�ller Rasmussen wrote:
...
I have set an image in an ObjectManager object like this:
imID = 'laeringsGraf'    
    self._setObject(imID, OFS.Image.Image(imID,'L�rings graf',''))
    self._getOb(imID).update_data(data)
I only want to draw it if it isn't there allready
How do I then check if it allready exists?
I guess it's something like::
if not hasattr(self, imID): ??
    or
    if not self._has_attr(imID)
with hasattr you'll check if the object exists but taking care of the
acquisition.

what you need is:

	if imID not in self.objectIds() :
		# doesn't exist
	else:
		# already exists

hoping this helps.

bye,

Jerome Alet