def ascii_only_to_unicode_stripped(val):
if isinstance(val, unicode):
try:
val.encode('ascii', 'strict') # just to check against encoding errors
except UnicodeEncodeError as exc:
raise FieldValueError(
public_message=INVALID_FIELD_TEMPLATE_MSG.format(value=val, exc=exc))
else:
assert isinstance(val, str)
try:
val = val.decode('ascii', 'strict')
except UnicodeDecodeError as exc:
raise FieldValueError(
public_message=INVALID_FIELD_TEMPLATE_MSG.format(value=val, exc=exc))
assert isinstance(val, unicode)
return val.strip()
def _clean_integer(value):
"""
Validate, whether passed value is an integer in range
0 to 23, so it can be set as an hour part in datetime.time
object.
Although the `Time` type of column represents datetime.time
in Python, MySQL backend interprets passed integers
differently than datetime.time. E.g. it converts a single-
and double-digit numbers to seconds (not to hours, like
datetime.time). Next places to the left reflect successively
minutes and hours.
In order to simplify this behavior, the method takes a number
between 0 and 23 and converts it to a datetime.time object,
that represents an hour only.
Args:
`value`:
validated hour as integer.
Returns:
a datetime.time object.
Raises:
A FieldValueError if the validated number is out
of expected range.
"""
try:
return datetime.time(value)
except ValueError as exc:
raise FieldValueError(
public_message=INVALID_FIELD_TEMPLATE_MSG.format(value=value,
exc=exc))
def _clean_string(cls, value):
try:
return datetime.datetime.strptime(value,
cls.hour_minute_format).time()
except (TypeError, ValueError) as exc:
raise FieldValueError(
public_message=INVALID_FIELD_TEMPLATE_MSG.format(value=value,
exc=exc))
def _verified_as_str(val):
__verify_is_str(val)
if isinstance(val, bytes): #3: remove the *if* statement (with its whole block)
try:
val = val.decode('utf-8', 'strict')
except UnicodeDecodeError as exc:
raise FieldValueError(
public_message=INVALID_FIELD_TEMPLATE_MSG.format(value=val, exc=exc))
return val
def to_stripped(val):
if not isinstance(val, basestring):
raise FieldValueError(public_message='Illegal type of value for a string-type field.')
if isinstance(val, str):
try:
val = val.decode('utf-8', 'strict')
except UnicodeDecodeError as exc:
raise FieldValueError(
public_message=INVALID_FIELD_TEMPLATE_MSG.format(value=val, exc=exc))
assert isinstance(val, unicode)
return val.strip()