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def get_argument(self, name: str, default: str, strip: bool = True) -> str:
pass
@overload # noqa: F811
def get_argument(
self, name: str, default: _ArgDefaultMarker = _ARG_DEFAULT, strip: bool = True
) -> str:
pass
@overload # noqa: F811
def get_argument(
self, name: str, default: None, strip: bool = True
) -> Optional[str]:
pass
[docs] def get_argument( # noqa: F811
self,
name: str,
default: Union[None, str, _ArgDefaultMarker] = _ARG_DEFAULT,
strip: bool = True,
) -> Optional[str]:
"""Returns the value of the argument with the given name.
If default is not provided, the argument is considered to be
required, and we raise a `MissingArgumentError` if it is missing.
If the argument appears in the request more than once, we return the
last value.
This method searches both the query and body arguments.
"""
return self._get_argument(name, default, self.request.arguments, strip)
[docs] def get_arguments(self, name: str, strip: bool = True) -> List[str]:
"""Returns a list of the arguments with the given name.
If the argument is not present, returns an empty list.
This method searches both the query and body arguments.
"""
# Make sure `get_arguments` isn't accidentally being called with a
# positional argument that's assumed to be a default (like in
# `get_argument`.)
assert isinstance(strip, bool)
return self._get_arguments(name, self.request.arguments, strip)
[docs] def get_body_argument(
self,
name: str,
default: Union[None, str, _ArgDefaultMarker] = _ARG_DEFAULT,
strip: bool = True,
) -> Optional[str]:
"""Returns the value of the argument with the given name
from the request body.
If default is not provided, the argument is considered to be
required, and we raise a `MissingArgumentError` if it is missing.
If the argument appears in the url more than once, we return the
last value.
.. versionadded:: 3.2
"""
return self._get_argument(name, default, self.request.body_arguments, strip)
[docs] def get_body_arguments(self, name: str, strip: bool = True) -> List[str]:
"""Returns a list of the body arguments with the given name.
If the argument is not present, returns an empty list.
.. versionadded:: 3.2
"""
return self._get_arguments(name, self.request.body_arguments, strip)
[docs] def get_query_argument(
self,
name: str,
default: Union[None, str, _ArgDefaultMarker] = _ARG_DEFAULT,
strip: bool = True,
) -> Optional[str]:
"""Returns the value of the argument with the given name
from the request query string.
If default is not provided, the argument is considered to be
required, and we raise a `MissingArgumentError` if it is missing.
If the argument appears in the url more than once, we return the
last value.
.. versionadded:: 3.2
"""
return self._get_argument(name, default, self.request.query_arguments, strip)
[docs] def get_query_arguments(self, name: str, strip: bool = True) -> List[str]:
"""Returns a list of the query arguments with the given name.
If the argument is not present, returns an empty list.
.. versionadded:: 3.2
"""
return self._get_arguments(name, self.request.query_arguments, strip)
def _get_argument(
self,
name: str,
default: Union[None, str, _ArgDefaultMarker],
source: Dict[str, List[bytes]],
strip: bool = True,
) -> Optional[str]:
args = self._get_arguments(name, source, strip=strip)
if not args:
if isinstance(default, _ArgDefaultMarker):
raise MissingArgumentError(name)
return default
return args[-1]
def _get_arguments(
self, name: str, source: Dict[str, List[bytes]], strip: bool = True
) -> List[str]:
values = []
for v in source.get(name, []):
s = self.decode_argument(v, name=name)
if isinstance(s, unicode_type):
# Get rid of any weird control chars (unless decoding gave
# us bytes, in which case leave it alone)
s = RequestHandler._remove_control_chars_regex.sub(" ", s)
if strip:
s = s.strip()
values.append(s)
return values
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