INNER CODE UNIT · Python

_require

gokayfem/ComfyUI-fal-API · nodes/builder_node.py:77

def _require(node_name: str, field: str, value: str) -> str:
    """Strip a required string field, raising when it is blank."""
    text = (value or "").strip()
    if not text:
        raise FalApiError(node_name, f"'{field}' is required and cannot be empty")
    return text


def _resolve_image_url(node_name: str, field: str, image: Any, url: str, required: bool) -> str:
    """A connected IMAGE wins (uploaded via fal storage); else the URL string."""
    if image is not None:
        return ImageUtils.upload_image(image)
    text = (url or "").strip()
    if not text and required:
        raise FalApiError(
            node_name,
            f"Connect an image or fill '{field}': the schema requires an image URL",
        )

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