[Zope] Python script sort by id

27 Jul 2001

      I have a slightly strange problem with sorting in a python script. 
Basically, sorting by title and meta_type both work as expected, but by id produces totally random results that I cannot fathom (I really can't see any pattern at all).

Here is the code snippet
------------------------
def sort_id(ob1, ob2):
    return cmp(ob1.id, ob2.id)

def sort_title(ob1, ob2):
    return cmp(ob1.title, ob2.title)

def sort_meta(ob1, ob2):
    return cmp(ob1.meta_type, ob2.meta_type)

if context.REQUEST.has_key('sort'):
    obVals = context.objectValues(all_types)
    obVals.sort(sort_id)
    if context.REQUEST['sort'] == 'title':
        obVals.sort(sort_title)
    elif context.REQUEST['sort'] == 'object_type':
        obVals.sort(sort_meta)
--------------------------

I have also tried:
getattr(ob1, 'id') - which gives the same wierd results
ob1.id() - which gives a TypeError of 'call of non-function (type string)'

I copied this approach from Chris McD's post here (http://zope.nipltd.com/public/lists/zope-archive.nsf/ByKey/19E1DED84C7E413F).

Can anyone tell me why the id sort goes so crazy?

Thanks

tim

tim at sitefusion dot co dot uk

[Zope] Python script sort by id

Tim Hicks