def extract_views_from_urlpatterns(urlpatterns, base='', namespace=None):
"""
Return a list of views from a list of urlpatterns.
Each object in the returned list is a two-tuple: (view_func, regex)
"""
views = []
for p in urlpatterns:
if hasattr(p, 'url_patterns'):
try:
patterns = p.url_patterns
except ImportError:
continue
views.extend(extract_views_from_urlpatterns(
patterns,
base + p.regex.pattern,
(namespace or []) + (p.namespace and [p.namespace] or [])
))
elif hasattr(p, 'callback'):
try:
views.append((p.callback, base + p.regex.pattern,
namespace, p.name))
except ViewDoesNotExist:
continue
else:
raise TypeError(_("%s does not appear to be a urlpattern object") % p)
return views
python类ViewDoesNotExist()的实例源码
def get_callable(lookup_view, can_fail=False):
"""
Return a callable corresponding to lookup_view. This function is used
by both resolve() and reverse(), so can_fail allows the caller to choose
between returning the input as is and raising an exception when the input
string can't be interpreted as an import path.
If lookup_view is already a callable, return it.
If lookup_view is a string import path that can be resolved to a callable,
import that callable and return it.
If lookup_view is some other kind of string and can_fail is True, the string
is returned as is. If can_fail is False, an exception is raised (either
ImportError or ViewDoesNotExist).
"""
if callable(lookup_view):
return lookup_view
mod_name, func_name = get_mod_func(lookup_view)
if not func_name: # No '.' in lookup_view
if can_fail:
return lookup_view
else:
raise ImportError(
"Could not import '%s'. The path must be fully qualified." %
lookup_view)
try:
mod = import_module(mod_name)
except ImportError:
if can_fail:
return lookup_view
else:
parentmod, submod = get_mod_func(mod_name)
if submod and not module_has_submodule(import_module(parentmod), submod):
raise ViewDoesNotExist(
"Could not import '%s'. Parent module %s does not exist." %
(lookup_view, mod_name))
else:
raise
else:
try:
view_func = getattr(mod, func_name)
except AttributeError:
if can_fail:
return lookup_view
else:
raise ViewDoesNotExist(
"Could not import '%s'. View does not exist in module %s." %
(lookup_view, mod_name))
else:
if not callable(view_func):
# For backwards compatibility this is raised regardless of can_fail
raise ViewDoesNotExist(
"Could not import '%s.%s'. View is not callable." %
(mod_name, func_name))
return view_func
def get_callable(lookup_view, can_fail=False):
"""
Return a callable corresponding to lookup_view. This function is used
by both resolve() and reverse(), so can_fail allows the caller to choose
between returning the input as is and raising an exception when the input
string can't be interpreted as an import path.
If lookup_view is already a callable, return it.
If lookup_view is a string import path that can be resolved to a callable,
import that callable and return it.
If lookup_view is some other kind of string and can_fail is True, the string
is returned as is. If can_fail is False, an exception is raised (either
ImportError or ViewDoesNotExist).
"""
if callable(lookup_view):
return lookup_view
mod_name, func_name = get_mod_func(lookup_view)
if not func_name: # No '.' in lookup_view
if can_fail:
return lookup_view
else:
raise ImportError(
"Could not import '%s'. The path must be fully qualified." %
lookup_view)
try:
mod = import_module(mod_name)
except ImportError:
if can_fail:
return lookup_view
else:
parentmod, submod = get_mod_func(mod_name)
if submod and not module_has_submodule(import_module(parentmod), submod):
raise ViewDoesNotExist(
"Could not import '%s'. Parent module %s does not exist." %
(lookup_view, mod_name))
else:
raise
else:
try:
view_func = getattr(mod, func_name)
except AttributeError:
if can_fail:
return lookup_view
else:
raise ViewDoesNotExist(
"Could not import '%s'. View does not exist in module %s." %
(lookup_view, mod_name))
else:
if not callable(view_func):
# For backwards compatibility this is raised regardless of can_fail
raise ViewDoesNotExist(
"Could not import '%s.%s'. View is not callable." %
(mod_name, func_name))
return view_func
def get_callable(lookup_view, can_fail=False):
"""
Return a callable corresponding to lookup_view. This function is used
by both resolve() and reverse(), so can_fail allows the caller to choose
between returning the input as is and raising an exception when the input
string can't be interpreted as an import path.
If lookup_view is already a callable, return it.
If lookup_view is a string import path that can be resolved to a callable,
import that callable and return it.
If lookup_view is some other kind of string and can_fail is True, the string
is returned as is. If can_fail is False, an exception is raised (either
ImportError or ViewDoesNotExist).
"""
if callable(lookup_view):
return lookup_view
mod_name, func_name = get_mod_func(lookup_view)
if not func_name: # No '.' in lookup_view
if can_fail:
return lookup_view
else:
raise ImportError(
"Could not import '%s'. The path must be fully qualified." %
lookup_view)
try:
mod = import_module(mod_name)
except ImportError:
if can_fail:
return lookup_view
else:
parentmod, submod = get_mod_func(mod_name)
if submod and not module_has_submodule(import_module(parentmod), submod):
raise ViewDoesNotExist(
"Could not import '%s'. Parent module %s does not exist." %
(lookup_view, mod_name))
else:
raise
else:
try:
view_func = getattr(mod, func_name)
except AttributeError:
if can_fail:
return lookup_view
else:
raise ViewDoesNotExist(
"Could not import '%s'. View does not exist in module %s." %
(lookup_view, mod_name))
else:
if not callable(view_func):
# For backwards compatibility this is raised regardless of can_fail
raise ViewDoesNotExist(
"Could not import '%s.%s'. View is not callable." %
(mod_name, func_name))
return view_func
def get_callable(lookup_view):
"""
Return a callable corresponding to lookup_view.
* If lookup_view is already a callable, return it.
* If lookup_view is a string import path that can be resolved to a callable,
import that callable and return it, otherwise raise an exception
(ImportError or ViewDoesNotExist).
"""
if callable(lookup_view):
return lookup_view
if not isinstance(lookup_view, six.string_types):
raise ViewDoesNotExist("'%s' is not a callable or a dot-notation path" % lookup_view)
mod_name, func_name = get_mod_func(lookup_view)
if not func_name: # No '.' in lookup_view
raise ImportError("Could not import '%s'. The path must be fully qualified." % lookup_view)
try:
mod = import_module(mod_name)
except ImportError:
parentmod, submod = get_mod_func(mod_name)
if submod and not module_has_submodule(import_module(parentmod), submod):
raise ViewDoesNotExist(
"Could not import '%s'. Parent module %s does not exist." %
(lookup_view, mod_name)
)
else:
raise
else:
try:
view_func = getattr(mod, func_name)
except AttributeError:
raise ViewDoesNotExist(
"Could not import '%s'. View does not exist in module %s." %
(lookup_view, mod_name)
)
else:
if not callable(view_func):
raise ViewDoesNotExist(
"Could not import '%s.%s'. View is not callable." %
(mod_name, func_name)
)
return view_func
def get_callable(lookup_view, can_fail=False):
"""
Return a callable corresponding to lookup_view. This function is used
by both resolve() and reverse(), so can_fail allows the caller to choose
between returning the input as is and raising an exception when the input
string can't be interpreted as an import path.
If lookup_view is already a callable, return it.
If lookup_view is a string import path that can be resolved to a callable,
import that callable and return it.
If lookup_view is some other kind of string and can_fail is True, the string
is returned as is. If can_fail is False, an exception is raised (either
ImportError or ViewDoesNotExist).
"""
if callable(lookup_view):
return lookup_view
mod_name, func_name = get_mod_func(lookup_view)
if not func_name: # No '.' in lookup_view
if can_fail:
return lookup_view
else:
raise ImportError(
"Could not import '%s'. The path must be fully qualified." %
lookup_view)
try:
mod = import_module(mod_name)
except ImportError:
if can_fail:
return lookup_view
else:
parentmod, submod = get_mod_func(mod_name)
if submod and not module_has_submodule(import_module(parentmod), submod):
raise ViewDoesNotExist(
"Could not import '%s'. Parent module %s does not exist." %
(lookup_view, mod_name))
else:
raise
else:
try:
view_func = getattr(mod, func_name)
except AttributeError:
if can_fail:
return lookup_view
else:
raise ViewDoesNotExist(
"Could not import '%s'. View does not exist in module %s." %
(lookup_view, mod_name))
else:
if not callable(view_func):
# For backwards compatibility this is raised regardless of can_fail
raise ViewDoesNotExist(
"Could not import '%s.%s'. View is not callable." %
(mod_name, func_name))
return view_func
def get_callable(lookup_view, can_fail=False):
"""
Return a callable corresponding to lookup_view. This function is used
by both resolve() and reverse(), so can_fail allows the caller to choose
between returning the input as is and raising an exception when the input
string can't be interpreted as an import path.
If lookup_view is already a callable, return it.
If lookup_view is a string import path that can be resolved to a callable,
import that callable and return it.
If lookup_view is some other kind of string and can_fail is True, the string
is returned as is. If can_fail is False, an exception is raised (either
ImportError or ViewDoesNotExist).
"""
if callable(lookup_view):
return lookup_view
mod_name, func_name = get_mod_func(lookup_view)
if not func_name: # No '.' in lookup_view
if can_fail:
return lookup_view
else:
raise ImportError(
"Could not import '%s'. The path must be fully qualified." %
lookup_view)
try:
mod = import_module(mod_name)
except ImportError:
if can_fail:
return lookup_view
else:
parentmod, submod = get_mod_func(mod_name)
if submod and not module_has_submodule(import_module(parentmod), submod):
raise ViewDoesNotExist(
"Could not import '%s'. Parent module %s does not exist." %
(lookup_view, mod_name))
else:
raise
else:
try:
view_func = getattr(mod, func_name)
except AttributeError:
if can_fail:
return lookup_view
else:
raise ViewDoesNotExist(
"Could not import '%s'. View does not exist in module %s." %
(lookup_view, mod_name))
else:
if not callable(view_func):
# For backwards compatibility this is raised regardless of can_fail
raise ViewDoesNotExist(
"Could not import '%s.%s'. View is not callable." %
(mod_name, func_name))
return view_func
