def convert_decimalfield_value(self, value, expression, connection,
context):
field = expression.field
val = utils.format_number(value, field.max_digits,
field.decimal_places)
value = utils.typecast_decimal(val)
return value
def convert_values(self, value, field):
if isinstance(value, Database.LOB):
value = value.read()
if field and field.get_internal_type() == 'TextField':
value = force_text(value)
# Oracle stores empty strings as null. We need to undo this in
# order to adhere to the Django convention of using the empty
# string instead of null, but only if the field accepts the
# empty string.
if value is None and field and field.empty_strings_allowed:
if field.get_internal_type() == 'BinaryField':
value = b''
else:
value = ''
# Convert 1 or 0 to True or False
elif value in (1, 0) and field and field.get_internal_type() in (
'BooleanField', 'NullBooleanField'):
value = bool(value)
# Force floats to the correct type
elif value is not None and field and field.get_internal_type(
) == 'FloatField':
value = float(value)
# Convert floats to decimals
elif value is not None and field and field.get_internal_type(
) == 'DecimalField':
value = backend_utils.typecast_decimal(field.format_number(value))
# cx_Oracle always returns datetime.datetime objects for
# DATE and TIMESTAMP columns, but Django wants to see a
# python datetime.date, .time, or .datetime. We use the type
# of the Field to determine which to cast to, but it's not
# always available.
# As a workaround, we cast to date if all the time-related
# values are 0, or to time if the date is 1/1/1900.
# This could be cleaned a bit by adding a method to the Field
# classes to normalize values from the database (the to_python
# method is used for validation and isn't what we want here).
elif isinstance(value, Database.Timestamp):
if field and field.get_internal_type() == 'DateTimeField':
pass
elif field and field.get_internal_type() == 'DateField':
value = value.date()
elif field and field.get_internal_type() == 'TimeField' or (
value.year == 1900 and value.month == value.day == 1):
value = value.time()
elif value.hour == value.minute == value.second == value.microsecond == 0:
value = value.date()
return value
def convert_value(self, value, expression, connection, context):
"""
Expressions provide their own converters because users have the option
of manually specifying the output_field which may be a different type
from the one the database returns.
"""
field = self.output_field
internal_type = field.get_internal_type()
if value is None:
return value
elif internal_type == 'FloatField':
return float(value)
elif internal_type.endswith('IntegerField'):
return int(value)
elif internal_type == 'DecimalField':
return backend_utils.typecast_decimal(value)
return value
def convert_value(self, value, expression, connection, context):
"""
Expressions provide their own converters because users have the option
of manually specifying the output_field which may be a different type
from the one the database returns.
"""
field = self.output_field
internal_type = field.get_internal_type()
if value is None:
return value
elif internal_type == 'FloatField':
return float(value)
elif internal_type.endswith('IntegerField'):
return int(value)
elif internal_type == 'DecimalField':
return backend_utils.typecast_decimal(value)
return value
def convert_values(self, value, field):
if isinstance(value, Database.LOB):
value = value.read()
if field and field.get_internal_type() == 'TextField':
value = force_text(value)
# Oracle stores empty strings as null. We need to undo this in
# order to adhere to the Django convention of using the empty
# string instead of null, but only if the field accepts the
# empty string.
if value is None and field and field.empty_strings_allowed:
if field.get_internal_type() == 'BinaryField':
value = b''
else:
value = ''
# Convert 1 or 0 to True or False
elif value in (1, 0) and field and field.get_internal_type() in ('BooleanField', 'NullBooleanField'):
value = bool(value)
# Force floats to the correct type
elif value is not None and field and field.get_internal_type() == 'FloatField':
value = float(value)
# Convert floats to decimals
elif value is not None and field and field.get_internal_type() == 'DecimalField':
value = backend_utils.typecast_decimal(field.format_number(value))
# cx_Oracle always returns datetime.datetime objects for
# DATE and TIMESTAMP columns, but Django wants to see a
# python datetime.date, .time, or .datetime. We use the type
# of the Field to determine which to cast to, but it's not
# always available.
# As a workaround, we cast to date if all the time-related
# values are 0, or to time if the date is 1/1/1900.
# This could be cleaned a bit by adding a method to the Field
# classes to normalize values from the database (the to_python
# method is used for validation and isn't what we want here).
elif isinstance(value, Database.Timestamp):
if field and field.get_internal_type() == 'DateTimeField':
pass
elif field and field.get_internal_type() == 'DateField':
value = value.date()
elif field and field.get_internal_type() == 'TimeField' or (value.year == 1900 and value.month == value.day == 1):
value = value.time()
elif value.hour == value.minute == value.second == value.microsecond == 0:
value = value.date()
return value
def convert_values(self, value, field):
"""SQLite returns floats when it should be returning decimals,
and gets dates and datetimes wrong.
For consistency with other backends, coerce when required.
"""
if value is None:
return None
internal_type = field.get_internal_type()
if internal_type == "DecimalField":
return backend_utils.typecast_decimal(field.format_number(value))
elif internal_type and internal_type.endswith("IntegerField") or internal_type == "AutoField":
return int(value)
elif internal_type == "DateField":
return parse_date(value)
elif internal_type == "DateTimeField":
return parse_datetime_with_timezone_support(value)
elif internal_type == "TimeField":
return parse_time(value)
# No field, or the field isn't known to be a decimal or integer
return value
def convert_values(self, value, field):
"""SQLite returns floats when it should be returning decimals,
and gets dates and datetimes wrong.
For consistency with other backends, coerce when required.
"""
if value is None:
return None
internal_type = field.get_internal_type()
if internal_type == 'DecimalField':
return backend_utils.typecast_decimal(field.format_number(value))
elif internal_type and internal_type.endswith('IntegerField') or internal_type == 'AutoField':
return int(value)
elif internal_type == 'DateField':
return parse_date(value)
elif internal_type == 'DateTimeField':
return parse_datetime_with_timezone_support(value)
elif internal_type == 'TimeField':
return parse_time(value)
# No field, or the field isn't known to be a decimal or integer
return value
def convert_decimalfield_value(self, value, expression, connection, context):
return backend_utils.typecast_decimal(expression.output_field.format_number(value))
def convert_decimalfield_value(self, value, expression, connection, context):
if value is not None:
value = expression.output_field.format_number(value)
value = backend_utils.typecast_decimal(value)
return value
def convert_decimalfield_value(self, value, expression, connection,
context):
if value is not None:
value = expression.output_field.format_number(value)
value = backend_utils.typecast_decimal(value)
return value
def typecast_decimal(v):
if isinstance(v, bytes):
v = v.decode('ascii')
return backend_utils.typecast_decimal(v)
def convert_decimalfield_value(self, value, field):
return backend_utils.typecast_decimal(field.format_number(value))
def convert_decimalfield_value(self, value, expression, context):
return backend_utils.typecast_decimal(expression.output_field.format_number(value))
def convert_decimalfield_value(self, value, field):
if value is not None:
value = backend_utils.typecast_decimal(field.format_number(value))
return value
def convert_decimalfield_value(self, value, field):
return backend_utils.typecast_decimal(field.format_number(value))
from __future__ import unicode_literals
def convert_decimalfield_value(self, value, field):
if value is not None:
value = backend_utils.typecast_decimal(field.format_number(value))
return value
def typecast_decimal(v):
if isinstance(v, bytes):
v = v.decode('ascii')
return backend_utils.typecast_decimal(v)
