Filter with string return nothing
I am facing a problem. Did I miss something?
Association.all().count()
1
Association.all().fetch(1)
[Association(**{'server_url': u'server-url', 'handle': u'handle2', 'secret': 'c2VjcmV0\n', 'issued': 1242892477L, 'lifetime': 200L, 'assoc_type': u'HMAC-SHA1'})]
Association.all().filter('server_url =', 'server-url').count()
0 # expect 1
Association.all().filter('server_url =', u'server-url').count()
0 # expect 1
Association.all().filter('issued >', 0).count()
1
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1 answer
Which property is "server_url"?
If it is a TextProperty, then it cannot be used in filters.
Unlike StringProperty, TextProperty value can be more than 500 bytes. However, TextProperty values are not indexable and cannot be used in filters or sort order.
http://code.google.com/appengine/docs/python/datastore/typesandpropertyclasses.html#TextProperty
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