def __init_subclass_with_meta__(cls,
model_class=None,
serializer_class=None,
model_operation=None,
login_required=True,
_meta=None,
**options):
if not _meta:
_meta = MutationOptions(cls)
if not serializer_class:
raise exceptions.SerializerMutationMetaAttrException(
attribute="serializer_class")
if not model_operation:
raise exceptions.SerializerMutationMetaAttrException(
attribute="model_operation")
if model_class is None:
serializer_meta = getattr(serializer_class, "Meta", None)
if serializer_meta:
model_class = getattr(serializer_meta, "model", None)
if not model_class and model_operation in ["update", "delete"]:
raise exceptions.SerializerMutationMetaAttrException(
attribute="model_class")
_meta.model_class = model_class
_meta.serializer_class = serializer_class
_meta.model_operation = model_operation
_meta.login_required = login_required
super().__init_subclass_with_meta__(_meta=_meta, **options)
def __init_subclass_with_meta__(cls,
lookup_field=None,
lookup_input_kwarg=None,
serializer_class=None,
model_class=None,
model_operations=["create", "update"],
fields=(),
exclude=(),
return_field_name=None,
return_field_type=None,
**options):
if not serializer_class:
raise Exception("serializer_class is required for the Mutation")
if "update" not in model_operations and "create" not in model_operations:
raise Exception(
'model_operations must contain "create" and/or "update"')
serializer = serializer_class()
if model_class is None:
serializer_meta = getattr(serializer_class, "Meta", None)
if serializer_meta:
model_class = getattr(serializer_meta, "model", None)
if lookup_field is None and model_class:
lookup_field = model_class._meta.pk.name
if lookup_input_kwarg is None:
lookup_input_kwarg = lookup_field
input_fields = fields_for_serializer(serializer,
fields,
exclude,
is_input=True)
if return_field_name is None:
model_name = model_class.__name__
return_field_name = model_name[:1].lower() + model_name[1:]
if not return_field_type:
registry = get_global_registry()
return_field_type = registry.get_type_for_model(model_class)
output_fields = OrderedDict()
if return_field_name:
output_fields[return_field_name] = graphene.Field(
return_field_type)
_meta = MutationOptions(cls)
_meta.lookup_field = lookup_field
_meta.lookup_input_kwarg = lookup_input_kwarg
_meta.model_operations = model_operations
_meta.serializer_class = serializer_class
_meta.model_class = model_class
_meta.fields = yank_fields_from_attrs(output_fields, _as=Field)
_meta.return_field_name = return_field_name
_meta.return_field_type = return_field_type
input_fields = yank_fields_from_attrs(input_fields, _as=InputField)
super().__init_subclass_with_meta__(_meta=_meta,
input_fields=input_fields,
**options)