if isinstance(value, basestring):
try:
return import_object(value)
except ImportError:
error = ValidationError(identity=ancestry, field=self, value=value).construct(
'import', value=value)
raise error.capture()
else:
return value
class Url(Text):
"""A resource field for urls."""
def __init__(self, **params):
errors = [
FieldError('pattern', 'invalid value', '%(field)s must be a valid URL')
]
pattern = re.compile('(?i)'
r'^(?:([^:]+)://)?'
r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?)|'
r'localhost|'
r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})'
r'(?::\d+)?'
r'(?:/?|[/?]\S+)$'
)
params['escape_html_entities'] = False
super(Url, self).__init__(errors=errors, strip=False, pattern=pattern, **params)
__all__ = construct_all_list(locals(), Field)
skipinitialspace = False
@classmethod
def serialize(cls, value, columns=None, path=None):
if path:
value = traverse_to_key(value, path)
if not isinstance(value, (list, tuple)):
raise ValueError(value)
if not value:
return ''
if isinstance(columns, basestring):
columns = columns.split(',')
if not columns:
columns = sorted(value[0].keys())
content = StringIO()
writer = DictWriter(content, columns, extrasaction='ignore', dialect=cls.Dialect)
writer.writerow(dict((name, name) for name in columns))
writer.writerows(value)
return content.getvalue()
def serialize(mimetype, value, **params):
return Format.formats[mimetype].serialize(value, **params)
def unserialize(mimetype, value, **params):
return Format.formats[mimetype].unserialize(value, **params)
__all__ = ['Format'] + construct_all_list(locals(), Format)
data = {}
for name, value in parse_qsl(content):
if value[0] in ("{", "["):
value = cls._unserialize_structured_value(value)
else:
value = cls._unserialize_simple_value(value)
data[name] = value
return data
class Yaml(Format):
extensions = [".yaml", ".yml"]
mimetype = "application/x-yaml"
name = "yaml"
@classmethod
def serialize(cls, value):
import yaml
return yaml.dump(value)
@classmethod
def unserialize(cls, value):
import yaml
return yaml.load(value)
__all__ = ["Format"] + construct_all_list(locals(), Format)
self.fields = tuple(list(self.fields[:idx]) + [field] + list(self.fields[idx + 1:]))
@classmethod
def _visit_field(cls, specification, callback):
return {'fields': tuple([callback(field) for field in specification['fields']])}
class Undefined(object):
"""A field which can be defined at a later time."""
def __init__(self, field=None):
self.callbacks = []
self.field = field
def define(self, field):
self.field = field
for callback, args in self.callbacks:
callback(field, *args)
def register(self, callback, *args):
self.callbacks.append((callback, args))
Errors = Tuple((
Sequence(
Map(Text(nonnull=True), description='A mapping describing an error with this request.'),
description='A sequence of global errors for this request.'),
Field(description='A structure containing structural errors for this request.')),
description='A two-tuple containing the errors for this request.'
)
__all__ = ['INCOMING', 'OUTGOING', 'Field', 'Errors', 'Undefined'] + construct_all_list(locals(), Field)
def _serialize_value(self, value):
return identify_object(value)
def _unserialize_value(self, value, ancestry):
if isinstance(value, basestring):
try:
return import_object(value)
except ImportError:
error = ValidationError(identity=ancestry, field=self, value=value).construct(
'import', value=value)
raise error.capture()
else:
return value
class Url(Text):
"""A resource field for urls."""
errors = [
Error('pattern', 'invalid value', '%(field)s must be a valid URL')
]
pattern = re.compile('(?i)'
r'^(?:([^:]+)://)?'
r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?)|'
r'localhost|'
r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})'
r'(?::\d+)?'
r'(?:/?|[/?]\S+)$'
)
__all__ = construct_all_list(locals(), Field)
if not isinstance(value, (list, tuple)):
raise ValueError(value)
if not value:
return ''
if isinstance(columns, basestring):
columns = columns.split(',')
if not columns:
columns = sorted(value[0].keys())
content = StringIO()
writer = DictWriter(content,
columns,
extrasaction='ignore',
dialect=cls.Dialect)
writer.writerow(dict((name, name) for name in columns))
writer.writerows(value)
return content.getvalue()
def serialize(mimetype, value, **params):
return Format.formats[mimetype].serialize(value, **params)
def unserialize(mimetype, value, **params):
return Format.formats[mimetype].unserialize(value, **params)
__all__ = ['Format'] + construct_all_list(locals(), Format)
