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fix(nodes): ensure each invocation overrides _original_model_fields with own field data #8114

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Jun 20, 2025
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fix(nodes): ensure each invocation overrides _original_model_fields with own field data #8114

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5 changes: 4 additions & 1 deletion invokeai/app/invocations/baseinvocation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -582,14 +582,16 @@ def wrapper(cls: Type[TBaseInvocation]) -> Type[TBaseInvocation]:

fields: dict[str, tuple[Any, FieldInfo]] = {}

original_model_fields: dict[str, OriginalModelField] = {}

for field_name, field_info in cls.model_fields.items():
annotation = field_info.annotation
assert annotation is not None, f"{field_name} on invocation {invocation_type} has no type annotation."
assert isinstance(field_info.json_schema_extra, dict), (
f"{field_name} on invocation {invocation_type} has a non-dict json_schema_extra, did you forget to use InputField?"
)

cls._original_model_fields[field_name] = OriginalModelField(annotation=annotation, field_info=field_info)
original_model_fields[field_name] = OriginalModelField(annotation=annotation, field_info=field_info)

validate_field_default(cls.__name__, field_name, invocation_type, annotation, field_info)

Expand Down Expand Up @@ -676,6 +678,7 @@ def wrapper(cls: Type[TBaseInvocation]) -> Type[TBaseInvocation]:
docstring = cls.__doc__
new_class = create_model(cls.__qualname__, __base__=cls, __module__=cls.__module__, **fields) # type: ignore
new_class.__doc__ = docstring
new_class._original_model_fields = original_model_fields

InvocationRegistry.register_invocation(new_class)

Expand Down