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Zero
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from enum import Enum
from pydantic.fields import FieldInfo
from pydantic import BaseModel
from pydantic_core import PydanticUndefined
from comfy.comfy_types.node_typing import IO, InputTypeOptions
NodeInput = tuple[IO, InputTypeOptions]
def _create_base_config(field_info: FieldInfo) -> InputTypeOptions:
config = {}
if hasattr(field_info, "default") and field_info.default is not PydanticUndefined:
config["default"] = field_info.default
if hasattr(field_info, "description") and field_info.description is not None:
config["tooltip"] = field_info.description
return config
def _get_number_constraints_config(field_info: FieldInfo) -> dict:
config = {}
if hasattr(field_info, "metadata"):
metadata = field_info.metadata
for constraint in metadata:
if hasattr(constraint, "ge"):
config["min"] = constraint.ge
if hasattr(constraint, "le"):
config["max"] = constraint.le
if hasattr(constraint, "multiple_of"):
config["step"] = constraint.multiple_of
return config
def _model_field_to_image_input(field_info: FieldInfo, **kwargs) -> NodeInput:
return IO.IMAGE, {
**_create_base_config(field_info),
**kwargs,
}
def _model_field_to_string_input(field_info: FieldInfo, **kwargs) -> NodeInput:
return IO.STRING, {
**_create_base_config(field_info),
**kwargs,
}
def _model_field_to_float_input(field_info: FieldInfo, **kwargs) -> NodeInput:
return IO.FLOAT, {
**_create_base_config(field_info),
**_get_number_constraints_config(field_info),
**kwargs,
}
def _model_field_to_int_input(field_info: FieldInfo, **kwargs) -> NodeInput:
return IO.INT, {
**_create_base_config(field_info),
**_get_number_constraints_config(field_info),
**kwargs,
}
def _model_field_to_combo_input(
field_info: FieldInfo, enum_type: type[Enum] = None, **kwargs
) -> NodeInput:
combo_config = {}
if enum_type is not None:
combo_config["options"] = [option.value for option in enum_type]
combo_config = {
**combo_config,
**_create_base_config(field_info),
**kwargs,
}
return IO.COMBO, combo_config
def model_field_to_node_input(
input_type: IO, base_model: type[BaseModel], field_name: str, **kwargs
) -> NodeInput:
"""
Maps a field from a Pydantic model to a Comfy node input.
Args:
input_type: The type of the input.
base_model: The Pydantic model to map the field from.
field_name: The name of the field to map.
**kwargs: Additional key/values to include in the input options.
Note:
For combo inputs, pass an `Enum` to the `enum_type` keyword argument to populate the options automatically.
Example:
>>> model_field_to_node_input(IO.STRING, MyModel, "my_field", multiline=True)
>>> model_field_to_node_input(IO.COMBO, MyModel, "my_field", enum_type=MyEnum)
>>> model_field_to_node_input(IO.FLOAT, MyModel, "my_field", slider=True)
"""
field_info: FieldInfo = base_model.model_fields[field_name]
result: NodeInput
if input_type == IO.IMAGE:
result = _model_field_to_image_input(field_info, **kwargs)
elif input_type == IO.STRING:
result = _model_field_to_string_input(field_info, **kwargs)
elif input_type == IO.FLOAT:
result = _model_field_to_float_input(field_info, **kwargs)
elif input_type == IO.INT:
result = _model_field_to_int_input(field_info, **kwargs)
elif input_type == IO.COMBO:
result = _model_field_to_combo_input(field_info, **kwargs)
else:
message = f"Invalid input type: {input_type}"
raise ValueError(message)
return result
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