def build_dataclass_field(self, field_name: str, type_info: TypeInfo) -> SerializerFieldDefinition:
"""
Create fields for dataclasses.
"""
try:
field_class = field_utils.lookup_type_in_mapping(self.serializer_field_mapping, type_info.base_type)
except KeyError:
field_class = self.serializer_dataclass_field
field_kwargs = {'dataclass': type_info.base_type,
'many': type_info.is_many}
return field_class, field_kwargs
def build_standard_field(self, field_name: str, type_info: TypeInfo) -> SerializerFieldDefinition:
"""
Create regular dataclass fields.
"""
try:
field_class = field_utils.lookup_type_in_mapping(self.serializer_field_mapping, type_info.base_type)
field_kwargs = {}
return field_class, field_kwargs
except KeyError:
# When resolving the type hint fails, raise a nice descriptive error based on the outermost type of the
# field (this makes solving deep recursive errors much easier).
field_type = self.dataclass_definition.field_types[field_name]
raise NotImplementedError(
"Automatic serializer field deduction not supported for field '{field}' on '{dataclass}' "
"of type '{type}'."
.format(dataclass=self.dataclass_definition.dataclass_type.__name__, field=field_name, type=field_type)
)
def build_dataclass_field(
self, field_name: str,
type_info: TypeInfo) -> SerializerFieldDefinition:
"""
Create fields for dataclasses.
"""
try:
field_class = field_utils.lookup_type_in_mapping(
self.serializer_field_mapping, type_info.base_type)
except KeyError:
field_class = self.serializer_dataclass_field
# allow user to map a dataclass to a regular serializer Field class
if not issubclass(field_class, DataclassSerializer):
return self.build_standard_field(field_name, type_info)
field_kwargs = {
'dataclass': type_info.base_type,
'many': type_info.is_many
}
return field_class, field_kwargs
