Skip Validation of a Field Based on the Contents of Another

[iambroadband]

This could be related to Discussion 4248.

It's possible my desired behavior is outside the scope of Pydantic, but I'd like to skip validation for one field if the value of another matches a particular value. In the below example, if the value of border_color is BorderColor.SILVER, then I don't want to validate any of the other fields on the model. Is something like this possible with a @modelvalidator(mode='wrap')?

Sorry if this question is a bit unclear or an answer already exists. I searched, but was unable to find a suitable solution.

class Color(StrEnum):
    BLUE = "U"
    RED = "R"

class BorderColor(StrEnum):
    BLACK = auto()
    BORDERLESS = auto()
    SILVER = auto()

class MyModel(BaseModel):
    border_color: BorderColor | None = Field(
        default=None,
        description="Border color of this card.",
    )
    produced_colors: set[Color] | None = Field(
        default=None,
        description="Colors this card can produce.",
    )

[uriyyo]

It's should be possible to achive it using wrap validator:

from enum import StrEnum, auto
from typing import Any, Callable

from pydantic import BaseModel, Field, field_validator
from pydantic_core.core_schema import ValidationInfo


class Color(StrEnum):
    BLUE = "U"
    RED = "R"


class BorderColor(StrEnum):
    BLACK = auto()
    BORDERLESS = auto()
    SILVER = auto()


class MyModel(BaseModel):
    border_color: BorderColor | None = Field(
        default=None,
        description="Border color of this card.",
    )
    produced_colors: set[Color] | None = Field(
        default=None,
        description="Colors this card can produce.",
    )

    @field_validator("produced_colors", mode="wrap")
    def _validate_produced_colors(cls, val: Any | None, next_: Callable[[Any], Any], ctx: ValidationInfo) -> Any:
        if ctx.data.get("border_color") == BorderColor.SILVER:
            return val

        return next_(val)


model = MyModel(
    border_color=BorderColor.SILVER,
    produced_colors={Color.BLUE, Color.RED},
)

[iambroadband]

Thank you very much, I will give this a try!