def load_from_path(path):
"""
Load class or function from string path.
"""
module, attr = path.rsplit('.', 1)
mod = importlib.import_module(module)
return getattr(mod, attr)
def load_from_path(path):
"""
Load class or function from string path.
"""
module, attr = path.rsplit('.', 1)
mod = importlib.import_module(module)
return getattr(mod, attr)
def auth_permitted(request):
"""
Check that the user in request can have access to the view or not.
By default, all users can edit or revert settings values.
"""
default = lambda request: True
func = settings._framework.auth_permitted_func or default
if isinstance(func, basestring):
module, attr = func.split('.')
mod = importlib.import_module(module)
func = getattr(mod, attr)
return func(request)
def auth_permitted(request):
"""
Check that the user in request can have access to the view or not.
By default, all users can edit or revert settings values.
"""
default = lambda request: True
func = settings._framework.auth_permitted_func or default
if isinstance(func, basestring):
module, attr = func.split('.')
mod = importlib.import_module(module)
func = getattr(mod, attr)
return func(request)
def find_settings_files(self):
"""
Find configuration definition files from each available installed app
and from project itself.
"""
apps = get_apps()
files = {}
pathes = self.settings_files
for app in apps:
app_name = app.__name__.split('.')[-2]
path = pathes.get(app_name, DEFAULT_SETTINGS_FILENAME)
if not os.path.isabs(path):
dirname = os.path.dirname(app.__file__)
path = os.path.join(dirname, path)
if not os.path.isfile(path):
continue
files.update({app_name: path})
for app_name, path in pathes.iteritems():
if name in files or not os.path.isfile(path):
continue
files.update({app_name: path})
path = self.settings_file or DEFAULT_SETTINGS_FILENAME
# If path isn't absolute - made it
if not os.path.isabs(path):
module = importlib.import_module(django_settings.SETTINGS_MODULE)
dirname = os.path.dirname(os.path.normpath(module.__file__))
path = os.path.join(dirname, path)
files.update({'__project__': path})
return files
def configure(self, backend=None, framework=None, **kwargs):
"""
Setup which backend will be used for reading and saving settings data
and which framework will be used for searching for available settings.
"""
assert not self._configured, '``LazySettings`` instance already ' \
'configured. Backend: %r, framework: ' \
'%r' % (self._backend, self._framework)
if framework:
# Import framework module by the Python path
try:
framework_module = importlib.import_module(framework)
except ImportError:
message = 'Cannot import framework module from %r path' % \
framework
logger.error(message)
raise ImproperlyConfigured(message)
# Load framework class from module if possible
try:
framework_klass = getattr(framework_module, 'Framework')
except AttributeError, e:
message = 'Cannot import framework class from %r module' % \
framework
logger.error(message)
raise ImproperlyConfigured(message)
# Framework class should be an instance of ``SetmanFramework``
if not issubclass(framework_klass, SetmanFramework):
message = '%r is not a subclass of %r' % \
(framework_klass, SetmanFramework)
logger.error(message)
raise ImproperlyConfigured(message)
def configure(self, backend=None, framework=None, **kwargs):
"""
Setup which backend will be used for reading and saving settings data
and which framework will be used for searching for available settings.
"""
assert not self._configured, '``LazySettings`` instance already ' \
'configured. Backend: %r, framework: ' \
'%r' % (self._backend, self._framework)
if framework:
# Import framework module by the Python path
try:
framework_module = importlib.import_module(framework)
except ImportError:
message = 'Cannot import framework module from %r path' % \
framework
logger.error(message)
raise ImproperlyConfigured(message)
# Load framework class from module if possible
try:
framework_klass = getattr(framework_module, 'Framework')
except AttributeError, e:
message = 'Cannot import framework class from %r module' % \
framework
logger.error(message)
raise ImproperlyConfigured(message)
# Framework class should be an instance of ``SetmanFramework``
if not issubclass(framework_klass, SetmanFramework):
message = '%r is not a subclass of %r' % \
(framework_klass, SetmanFramework)
logger.error(message)
raise ImproperlyConfigured(message)
raise ImproperlyConfigured(message)
# Framework class should be an instance of ``SetmanFramework``
if not issubclass(framework_klass, SetmanFramework):
message = '%r is not a subclass of %r' % \
(framework_klass, SetmanFramework)
logger.error(message)
raise ImproperlyConfigured(message)
else:
# If no framework would be set - we will use default class
framework_klass = SetmanFramework
if backend:
try:
backend_module = importlib.import_module(backend)
except ImportError, e:
message = 'Cannot import backend module from %r path' % backend
logger.error(message)
raise ImproperlyConfigured(message)
try:
backend_klass = getattr(backend_module, 'Backend')
except AttributeError, e:
message = 'Cannot import backend class from %r module' % \
backend
logger.error(message)
raise ImproperlyConfigured(message)
def _parse_choices(self, value):
"""
Convert string value to valid choices tuple.
**Supported formats:**
* a, b, c
* (a, A), (b, B), (c, C)
* a { b, c }, d { e, f }
* A { (b, B), (c, C) }, D { (e, E), (f, F) }
* path.to.CHOICES
* path.to.Model.CHOICES
"""
# Start parsing with internal choices
if not ',' in value and '.' in value:
# Choices tuple should be last part of value
path, attr = value.rsplit('.', 1)
# Load choices from module
try:
module = importlib.import_module(path)
except ImportError:
# Or from module class
try:
module = load_from_path(path)
except (AttributeError, ImportError):
logger.exception('Cannot load choices from %r path', value)
return ()
# Try to get choices attr in module
try:
choices = getattr(module, attr)
except AttributeError:
logger.exception('Cannot load choices from %r path', value)
return ()
elif not '{' in value and not '}' in value:
# Parse choice with labels
label_re = re.compile(r'\(([^,]+),\s+([^\)]+)\)', re.M)
found = label_re.findall(value)
if found:
choices = found
# If nothing found by regex, just split value by comma and
# duplicate resulted items
else:
choices = map(lambda item: (item.strip(), item.strip()),
value.split(','))
else:
# Parse groups
groups_re = re.compile(r'([^{]+){([^}]+)},?', re.M)
found = groups_re.findall(value)
if found:
choices = []
for group, data in found:
group = group.strip()
choices.append((group, self._parse_choices(data.strip())))
else:
logger.error('Cannot parse choices from %r', value)
return ()
return tuple(choices)
raise ImproperlyConfigured(message)
# Framework class should be an instance of ``SetmanFramework``
if not issubclass(framework_klass, SetmanFramework):
message = '%r is not a subclass of %r' % \
(framework_klass, SetmanFramework)
logger.error(message)
raise ImproperlyConfigured(message)
else:
# If no framework would be set - we will use default class
framework_klass = SetmanFramework
if backend:
try:
backend_module = importlib.import_module(backend)
except ImportError, e:
message = 'Cannot import backend module from %r path' % backend
logger.error(message)
raise ImproperlyConfigured(message)
try:
backend_klass = getattr(backend_module, 'Backend')
except AttributeError, e:
message = 'Cannot import backend class from %r module' % \
backend
logger.error(message)
raise ImproperlyConfigured(message)
def _parse_choices(self, value):
"""
Convert string value to valid choices tuple.
**Supported formats:**
* a, b, c
* (a, A), (b, B), (c, C)
* a { b, c }, d { e, f }
* A { (b, B), (c, C) }, D { (e, E), (f, F) }
* path.to.CHOICES
* path.to.Model.CHOICES
"""
# Start parsing with internal choices
if not ',' in value and '.' in value:
# Choices tuple should be last part of value
path, attr = value.rsplit('.', 1)
# Load choices from module
try:
module = importlib.import_module(path)
except ImportError:
# Or from module class
try:
module = load_from_path(path)
except (AttributeError, ImportError):
logger.exception('Cannot load choices from %r path',
value)
return ()
# Try to get choices attr in module
try:
choices = getattr(module, attr)
except AttributeError:
logger.exception('Cannot load choices from %r path', value)
return ()
elif not '{' in value and not '}' in value:
# Parse choice with labels
label_re = re.compile(r'\(([^,]+),\s+([^\)]+)\)', re.M)
found = label_re.findall(value)
if found:
choices = found
# If nothing found by regex, just split value by comma and
# duplicate resulted items
else:
choices = map(lambda item: (item.strip(), item.strip()),
value.split(','))
else:
# Parse groups
groups_re = re.compile(r'([^{]+){([^}]+)},?', re.M)
found = groups_re.findall(value)
if found:
choices = []
for group, data in found:
group = group.strip()
choices.append((group, self._parse_choices(data.strip())))
else:
logger.error('Cannot parse choices from %r', value)
return ()
return tuple(choices)
