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feat: add Metadata Overwrite node for manual generation params override

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Will Miao
2026-07-26 08:50:21 +08:00
parent 077e70169d
commit 125bed3f09
8 changed files with 437 additions and 6 deletions
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154
py/nodes/metadata_overwrite.py Normal file
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"""Metadata Overwrite node — allows users to manually specify generation parameters
that override the automatically collected/inferred metadata.
All inputs have falsy defaults: only truthy (non-empty / non-zero) values
will overwrite the corresponding field in the final metadata.
"""
from typing import Any
from ..metadata_collector.constants import METADATA_OVERWRITE_FIELDS
class MetadataOverwriteLM:
NAME = "Metadata Overwrite (LoraManager)"
CATEGORY = "Lora Manager/utils"
DESCRIPTION = (
"Manually specify generation parameters to override automatically collected "
"metadata. Only filled/connected inputs will take effect — empty defaults "
"are ignored."
)
@classmethod
def INPUT_TYPES(cls) -> dict[str, Any]:
return {
"optional": {
"prompt": (
"STRING",
{
"default": "",
"multiline": True,
"tooltip": "Positive prompt. Only overwrites when non-empty.",
},
),
"negative_prompt": (
"STRING",
{
"default": "",
"multiline": True,
"tooltip": "Negative prompt. Only overwrites when non-empty.",
},
),
"seed": (
"INT",
{
"default": 0,
"min": 0,
"max": 0xFFFFFFFFFFFFFFFF,
"control_after_generate": False,
"tooltip": "Seed value. Only overwrites when > 0.",
},
),
"steps": (
"INT",
{
"default": 0,
"min": 0,
"max": 10000,
"tooltip": "Number of steps. Only overwrites when > 0.",
},
),
"cfg_scale": (
"FLOAT",
{
"default": 0.0,
"min": 0.0,
"max": 100.0,
"tooltip": "CFG scale. Only overwrites when > 0.",
},
),
"sampler": (
"STRING",
{
"default": "",
"tooltip": "Sampler name. Only overwrites when non-empty.",
},
),
"scheduler": (
"STRING",
{
"default": "",
"tooltip": "Scheduler name. Only overwrites when non-empty.",
},
),
"checkpoint": (
"STRING",
{
"default": "",
"tooltip": "Checkpoint / model name. Only overwrites when non-empty.",
},
),
"loras": (
"STRING",
{
"default": "",
"multiline": True,
"tooltip": (
"LoRA syntax, e.g. <lora:name:strength> "
"or <lora:name:model_strength:clip_strength>, "
"separated by spaces. Only overwrites when non-empty."
),
},
),
"size": (
"STRING",
{
"default": "",
"tooltip": (
"Image size in WIDTHxHEIGHT format (e.g. 512x768). "
"Only overwrites when non-empty."
),
},
),
"clip_skip": (
"INT",
{
"default": 0,
"min": -24,
"max": 24,
"tooltip": "Clip skip. Only overwrites when non-zero.",
},
),
"additional_data": (
"STRING",
{
"default": "",
"multiline": True,
"tooltip": (
"Additional data to embed in the image metadata. "
"Inserted between Clip skip and Model hash in the "
"A1111-compatible parameters string. "
'Example: "Copyright": "Some license info"'
),
},
),
},
}
RETURN_TYPES = ("METADATA",)
RETURN_NAMES = ("metadata",)
FUNCTION = "collect_metadata"
OUTPUT_NODE = True
def collect_metadata(self, **kwargs: Any) -> tuple[dict[str, Any]]:
"""Collect non-falsy input values into a metadata dict.
Only values that are truthy (non-empty string, non-zero number)
are included — matching the overwrite logic in the metadata pipeline.
"""
result: dict[str, Any] = {}
for key in METADATA_OVERWRITE_FIELDS:
value = kwargs.get(key)
if value:
result[key] = value
return (result,)