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Filtering on datetime raises TypeError
The following code is meant to filter the Items that are checked out and updated in the past hour. However, the updated__gt
query causes a TypeError to be raised.
from datetime import datetime, timedelta
from stdnet import odm
class Item(odm.StdModel):
name = odm.CharField(required=True)
checked_out = odm.BooleanField(default=False)
updated = odm.DateTimeField(default=datetime.utcnow)
models = odm.Router("redis://")
models.register(Item)
item = models.item.new(name="foo", checked_out=True)
item.save()
hour_ago = datetime.utcnow() - timedelta(hours=1)
recent = models.item.filter(checked_out=True,
updated__gt=hour_ago).sort_by("-updated").all()
Stack trace:
Traceback (most recent call last):
File "tmp.py", line 16, in <module>
updated__gt=hour_ago).sort_by("-updated").all()
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/odm/query.py", line 256, in all
return self.items()
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/odm/query.py", line 581, in items
return self.backend_query().items(callback=callback)
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/odm/query.py", line 615, in backend_query
return q if isinstance(q, EmptyQuery) else q.backend_query(**kwargs)
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/odm/query.py", line 198, in backend_query
self.__backend_query = self.backend.Query(self, **kwargs)
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/utils/async.py", line 116, in __init__
self._build(**kwargs)
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/backends/redisb/__init__.py", line 149, in _build
be = value.backend_query(pipe=pipe)
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/odm/query.py", line 198, in backend_query
self.__backend_query = self.backend.Query(self, **kwargs)
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/utils/async.py", line 116, in __init__
self._build(**kwargs)
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/backends/redisb/__init__.py", line 154, in _build
value = self.dump_nested(*value)
File "/Users/sloria1/Envs/tmp/lib/python2.7/site-packages/stdnet/backends/redisb/__init__.py", line 255, in dump_nested
return json.dumps((value, nested_args))
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/__init__.py", line 243, in dumps
return _default_encoder.encode(obj)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/encoder.py", line 207, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/encoder.py", line 270, in iterencode
return _iterencode(o, 0)
File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/json/encoder.py", line 184, in default
raise TypeError(repr(o) + " is not JSON serializable")
TypeError: datetime.datetime(2013, 12, 1, 1, 6, 4, 110880) is not JSON serializable
Looks like a bug,
Could you write a test using your example?
You could put the test into a new file dates.py
within the tests.all.fields
module.
Something like this
class TestItem(test.TestCase):
model = Item
def test_filter(self):
models = self.mapper
...
Once done that I can take a look. Thanks