def _parse_validators(self, value):
"""
Parse validators string and try to convert it to list with actual
validator functions.
"""
if not value:
return []
items = map(lambda item: item.strip(), value.split(','))
validators = []
for item in items:
try:
validator = load_from_path(item)
except (AttributeError, ImportError):
logger.exception('Cannot load %r validator for %s setting.',
item, self.name)
continue
validators.append(validator)
return validators
def _parse_validators(self, value):
"""
Parse validators string and try to convert it to list with actual
validator functions.
"""
if not value:
return []
items = map(lambda item: item.strip(), value.split(','))
validators = []
for item in items:
try:
validator = load_from_path(item)
except (AttributeError, ImportError):
logger.exception('Cannot load %r validator for %s setting.',
item, self.name)
continue
validators.append(validator)
return validators
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)
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)
