def __init__(self,
hash_key=False,
range_key=False,
index=None,
data_type=NO_ARG,
type=six.text_type,
coerce=False,
check=None,
nullable=True,
default=NO_ARG,
**metadata):
if hash_key and range_key:
raise ValueError("hash_key and range_key are mutually exclusive!")
self.name = None
self.model = None
self.composite = False
if data_type is NO_ARG:
data_type = type
if isinstance(data_type, TypeDefinition):
self.data_type = data_type
elif (inspect.isclass(data_type)
and issubclass(data_type, TypeDefinition)):
self.data_type = data_type()
else:
type_factory = ALL_TYPES.get(data_type)
if type_factory is None:
raise TypeError("Unrecognized data_type '%s'" % data_type)
self.data_type = type_factory()
self._coerce = coerce
self.check = []
if check is not None:
if hasattr(check, '__iter__'):
self.check = list(check)
else:
self.check = [check]
self.nullable = nullable
if not self.nullable:
self.check.append(lambda x: not is_null(x))
self.hash_key = hash_key
self.range_key = range_key
self.subfields = []
self.index = False
self.index_name = None
self._ddb_index = None
self._ddb_index_kwargs = None
if default is NO_ARG:
if self.is_set:
self._default = set()
else:
self._default = None
else:
self._default = default
if index:
self.all_index(index)
self.metadata = metadata
def __new__(cls, *_, **__):
""" Override __new__ to set default field values """
obj = super(Model, cls).__new__(cls)
mark_dirty = []
with obj.loading_():
for name, field in six.iteritems(cls.meta_.fields):
if not field.composite:
setattr(obj, name, field.default)
if not is_null(field.default):
mark_dirty.append(name)
obj.__dirty__.update(mark_dirty)
obj._persisted = False
return obj
def __init__(self, hash_key=False, range_key=False, index=None,
data_type=NO_ARG, type=six.text_type, coerce=False,
check=None, nullable=True, default=NO_ARG):
if hash_key and range_key:
raise ValueError("hash_key and range_key are mutually exclusive!")
self.name = None
self.model = None
self.composite = False
if data_type is NO_ARG:
data_type = type
if isinstance(data_type, TypeDefinition):
self.data_type = data_type
elif (inspect.isclass(data_type) and
issubclass(data_type, TypeDefinition)):
self.data_type = data_type()
else:
type_factory = ALL_TYPES.get(data_type)
if type_factory is None:
raise TypeError("Unrecognized data_type '%s'" % data_type)
self.data_type = type_factory()
self._coerce = coerce
self.check = []
if check is not None:
if hasattr(check, '__iter__'):
self.check = list(check)
else:
self.check = [check]
if not nullable:
self.check.append(lambda x: not is_null(x))
self.hash_key = hash_key
self.range_key = range_key
self.subfields = []
self.index = False
self.index_name = None
self._ddb_index = None
self._ddb_index_kwargs = None
if default is NO_ARG:
if self.is_set:
self._default = set()
else:
self._default = None
else:
self._default = default
if index:
self.all_index(index)
