def nomethod(cls):
"""Returns a `405 Method Not Allowed` error for `cls`."""
web.ctx.status = '405 Method Not Allowed'
web.header('Content-Type', 'text/html')
web.header('Allow', \
', '.join([method for method in \
['GET', 'HEAD', 'POST', 'PUT', 'DELETE'] \
if hasattr(cls, method)]))
# commented out for the same reason redirect is
# return output('method not allowed')
python类redirect()的实例源码
def nomethod(cls):
"""Returns a `405 Method Not Allowed` error for `cls`."""
web.ctx.status = '405 Method Not Allowed'
web.header('Content-Type', 'text/html')
web.header('Allow', \
', '.join([method for method in \
['GET', 'HEAD', 'POST', 'PUT', 'DELETE'] \
if hasattr(cls, method)]))
# commented out for the same reason redirect is
# return output('method not allowed')
def nomethod(cls):
"""Returns a `405 Method Not Allowed` error for `cls`."""
web.ctx.status = '405 Method Not Allowed'
web.header('Content-Type', 'text/html')
web.header('Allow', \
', '.join([method for method in \
['GET', 'HEAD', 'POST', 'PUT', 'DELETE'] \
if hasattr(cls, method)]))
# commented out for the same reason redirect is
# return output('method not allowed')
def __call__(self, i, default=DEFAULT, cast=None, otherwise=None):
"""Allows to use a special syntax for fast-check of
`request.args()` validity.
:params:
i: index
default: use this value if arg not found
cast: type cast
otherwise:
will be executed when:
- casts fail
- value not found, dont have default and otherwise is
especified
can be:
- None: results in a 404
- str: redirect to this address
- callable: calls the function (nothing is passed)
Example:
You can use::
request.args(0,default=0,cast=int,otherwise='http://error_url')
request.args(0,default=0,cast=int,otherwise=lambda:...)
"""
n = len(self)
if 0 <= i < n or -n <= i < 0:
value = self[i]
elif default is DEFAULT:
value = None
else:
value, cast, otherwise = default, False, False
try:
if cast:
value = cast(value)
if not value and otherwise:
raise ValueError('Otherwise will raised.')
except (ValueError, TypeError):
from http import HTTP, redirect
if otherwise is None:
raise HTTP(404)
elif isinstance(otherwise, str):
redirect(otherwise)
elif callable(otherwise):
return otherwise()
else:
raise RuntimeError("invalid otherwise")
return value
def __call__(self, i, default=DEFAULT, cast=None, otherwise=None):
"""Allows to use a special syntax for fast-check of
`request.args()` validity.
:params:
i: index
default: use this value if arg not found
cast: type cast
otherwise:
will be executed when:
- casts fail
- value not found, dont have default and otherwise is
especified
can be:
- None: results in a 404
- str: redirect to this address
- callable: calls the function (nothing is passed)
Example:
You can use::
request.args(0,default=0,cast=int,otherwise='http://error_url')
request.args(0,default=0,cast=int,otherwise=lambda:...)
"""
n = len(self)
if 0 <= i < n or -n <= i < 0:
value = self[i]
elif default is DEFAULT:
value = None
else:
value, cast, otherwise = default, False, False
try:
if cast:
value = cast(value)
if not value and otherwise:
raise ValueError('Otherwise will raised.')
except (ValueError, TypeError):
from http import HTTP, redirect
if otherwise is None:
raise HTTP(404)
elif isinstance(otherwise, str):
redirect(otherwise)
elif callable(otherwise):
return otherwise()
else:
raise RuntimeError("invalid otherwise")
return value
def __call__(self, i, default=DEFAULT, cast=None, otherwise=None):
"""Allows to use a special syntax for fast-check of
`request.args()` validity.
:params:
i: index
default: use this value if arg not found
cast: type cast
otherwise:
will be executed when:
- casts fail
- value not found, dont have default and otherwise is
especified
can be:
- None: results in a 404
- str: redirect to this address
- callable: calls the function (nothing is passed)
Example:
You can use::
request.args(0,default=0,cast=int,otherwise='http://error_url')
request.args(0,default=0,cast=int,otherwise=lambda:...)
"""
n = len(self)
if 0 <= i < n or -n <= i < 0:
value = self[i]
elif default is DEFAULT:
value = None
else:
value, cast, otherwise = default, False, False
try:
if cast:
value = cast(value)
if not value and otherwise:
raise ValueError('Otherwise will raised.')
except (ValueError, TypeError):
from http import HTTP, redirect
if otherwise is None:
raise HTTP(404)
elif isinstance(otherwise, str):
redirect(otherwise)
elif callable(otherwise):
return otherwise()
else:
raise RuntimeError("invalid otherwise")
return value
def __call__(self, i, default=DEFAULT, cast=None, otherwise=None):
"""Allows to use a special syntax for fast-check of
`request.args()` validity.
:params:
i: index
default: use this value if arg not found
cast: type cast
otherwise:
will be executed when:
- casts fail
- value not found, dont have default and otherwise is
especified
can be:
- None: results in a 404
- str: redirect to this address
- callable: calls the function (nothing is passed)
Example:
You can use::
request.args(0,default=0,cast=int,otherwise='http://error_url')
request.args(0,default=0,cast=int,otherwise=lambda:...)
"""
n = len(self)
if 0 <= i < n or -n <= i < 0:
value = self[i]
elif default is DEFAULT:
value = None
else:
value, cast, otherwise = default, False, False
try:
if cast:
value = cast(value)
if not value and otherwise:
raise ValueError('Otherwise will raised.')
except (ValueError, TypeError):
from http import HTTP, redirect
if otherwise is None:
raise HTTP(404)
elif isinstance(otherwise, str):
redirect(otherwise)
elif callable(otherwise):
return otherwise()
else:
raise RuntimeError("invalid otherwise")
return value
def handle(mapping, fvars=None):
"""
Call the appropriate function based on the url to function mapping in `mapping`.
If no module for the function is specified, look up the function in `fvars`. If
`fvars` is empty, using the caller's context.
`mapping` should be a tuple of paired regular expressions with function name
substitutions. `handle` will import modules as necessary.
"""
for url, ofno in utils.group(mapping, 2):
if isinstance(ofno, tuple):
ofn, fna = ofno[0], list(ofno[1:])
else:
ofn, fna = ofno, []
fn, result = utils.re_subm('^' + url + '$', ofn, web.ctx.path)
if result: # it's a match
if fn.split(' ', 1)[0] == "redirect":
url = fn.split(' ', 1)[1]
if web.ctx.method == "GET":
x = web.ctx.env.get('QUERY_STRING', '')
if x:
url += '?' + x
return http.redirect(url)
elif '.' in fn:
x = fn.split('.')
mod, cls = '.'.join(x[:-1]), x[-1]
mod = __import__(mod, globals(), locals(), [""])
cls = getattr(mod, cls)
else:
cls = fn
mod = fvars
if isinstance(mod, types.ModuleType):
mod = vars(mod)
try:
cls = mod[cls]
except KeyError:
return web.notfound()
meth = web.ctx.method
if meth == "HEAD":
if not hasattr(cls, meth):
meth = "GET"
if not hasattr(cls, meth):
return nomethod(cls)
tocall = getattr(cls(), meth)
args = list(result.groups())
for d in re.findall(r'\\(\d+)', ofn):
args.pop(int(d) - 1)
return tocall(*([x and urllib.unquote(x) for x in args] + fna))
return web.notfound()
def handle(mapping, fvars=None):
"""
Call the appropriate function based on the url to function mapping in `mapping`.
If no module for the function is specified, look up the function in `fvars`. If
`fvars` is empty, using the caller's context.
`mapping` should be a tuple of paired regular expressions with function name
substitutions. `handle` will import modules as necessary.
"""
for url, ofno in utils.group(mapping, 2):
if isinstance(ofno, tuple):
ofn, fna = ofno[0], list(ofno[1:])
else:
ofn, fna = ofno, []
fn, result = utils.re_subm('^' + url + '$', ofn, web.ctx.path)
if result: # it's a match
if fn.split(' ', 1)[0] == "redirect":
url = fn.split(' ', 1)[1]
if web.ctx.method == "GET":
x = web.ctx.env.get('QUERY_STRING', '')
if x:
url += '?' + x
return http.redirect(url)
elif '.' in fn:
x = fn.split('.')
mod, cls = '.'.join(x[:-1]), x[-1]
mod = __import__(mod, globals(), locals(), [""])
cls = getattr(mod, cls)
else:
cls = fn
mod = fvars
if isinstance(mod, types.ModuleType):
mod = vars(mod)
try:
cls = mod[cls]
except KeyError:
return web.notfound()
meth = web.ctx.method
if meth == "HEAD":
if not hasattr(cls, meth):
meth = "GET"
if not hasattr(cls, meth):
return nomethod(cls)
tocall = getattr(cls(), meth)
args = list(result.groups())
for d in re.findall(r'\\(\d+)', ofn):
args.pop(int(d) - 1)
return tocall(*([x and urllib.unquote(x) for x in args] + fna))
return web.notfound()
def handle(mapping, fvars=None):
"""
Call the appropriate function based on the url to function mapping in `mapping`.
If no module for the function is specified, look up the function in `fvars`. If
`fvars` is empty, using the caller's context.
`mapping` should be a tuple of paired regular expressions with function name
substitutions. `handle` will import modules as necessary.
"""
for url, ofno in utils.group(mapping, 2):
if isinstance(ofno, tuple):
ofn, fna = ofno[0], list(ofno[1:])
else:
ofn, fna = ofno, []
fn, result = utils.re_subm('^' + url + '$', ofn, web.ctx.path)
if result: # it's a match
if fn.split(' ', 1)[0] == "redirect":
url = fn.split(' ', 1)[1]
if web.ctx.method == "GET":
x = web.ctx.env.get('QUERY_STRING', '')
if x:
url += '?' + x
return http.redirect(url)
elif '.' in fn:
x = fn.split('.')
mod, cls = '.'.join(x[:-1]), x[-1]
mod = __import__(mod, globals(), locals(), [""])
cls = getattr(mod, cls)
else:
cls = fn
mod = fvars
if isinstance(mod, types.ModuleType):
mod = vars(mod)
try:
cls = mod[cls]
except KeyError:
return web.notfound()
meth = web.ctx.method
if meth == "HEAD":
if not hasattr(cls, meth):
meth = "GET"
if not hasattr(cls, meth):
return nomethod(cls)
tocall = getattr(cls(), meth)
args = list(result.groups())
for d in re.findall(r'\\(\d+)', ofn):
args.pop(int(d) - 1)
return tocall(*([x and urllib.unquote(x) for x in args] + fna))
return web.notfound()
def __call__(self, i, default=DEFAULT, cast=None, otherwise=None):
"""Allows to use a special syntax for fast-check of `request.args()`
validity
Args:
i: index
default: use this value if arg not found
cast: type cast
otherwise: can be:
- None: results in a 404
- str: redirect to this address
- callable: calls the function (nothing is passed)
Example:
You can use::
request.args(0,default=0,cast=int,otherwise='http://error_url')
request.args(0,default=0,cast=int,otherwise=lambda:...)
"""
n = len(self)
if 0 <= i < n or -n <= i < 0:
value = self[i]
elif default is DEFAULT:
value = None
else:
value, cast = default, False
if cast:
try:
value = cast(value)
except (ValueError, TypeError):
from http import HTTP, redirect
if otherwise is None:
raise HTTP(404)
elif isinstance(otherwise, str):
redirect(otherwise)
elif callable(otherwise):
return otherwise()
else:
raise RuntimeError("invalid otherwise")
return value
