def from_dict(klass, dikt) -> Any:
if is_dataclass(klass):
fields = datafields(klass)
args = {f.name: from_dict(f.type, dikt[f.name]) for f in fields}
return klass(**args)
else:
return dikt
def __str__(self):
"""
Returns the dataclass fields as a URL query string.
"""
result = '?'
for field in datafields(self):
name = field.name
if value := getattr(self, name):
value = str(value)
if field.type is bool:
value = value.lower()
name = self.fix(name)
if self.validate(name, value):
result += f'{name}={value}&'
else:
e_msg = f'Error: "{value}" is not a valid value for {name}'
raise ValueError(e_msg)
def dataclass_from_dict(klass, dikt):
"""Load any dataclass from a dict"""
fieldtypes = {f.name: f.type for f in datafields(klass)}
return klass(
**{f: dataclass_from_dict(fieldtypes[f], dikt[f])
for f in dikt})
def dataclass_from_dict(klass, dikt):
try:
fieldtypes = {f.name:f.type for f in datafields(klass)}
return klass(**{f:dataclass_from_dict(fieldtypes[f], dikt[f]) for f in dikt})
except:
return dikt