business-validator 2.0.1

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Business-Validator

ErrorSchema

Use business_validator.ErrorSchema if you don't know which format you're gonna use.

Quick Start

DTO

class CommentDto(BaseModel):
    comment: str
    post_id: int
    owner_id: int

Add error source (error context)

class Source(BaseModel):
    local: str

DTO Validator

@dataclasses.dataclass()
class CommentValidator(Validator[ErrorSchema[Source]]):
    dto: CommentDto

    @validate
    async def test1(self):
        post_ids = list(range(1, 10))

        if self.dto.post_id not in post_ids:
            self.context.add_error(
                ErrorSchema(
                    code=ErrorCodeEnum.not_found.value,
                    message="Id doen't not exists",
                    detail=f"Post with id={self.dto.post_id} not found",
                    source=Source(
                        local="data/post_id",
                    ),
                )
            )

    @validate
    async def test2(self):
        owner_ids = list(range(1, 10))

        if self.dto.owner_id not in owner_ids:
            self.context.add_error(
                ErrorSchema(
                    code=ErrorCodeEnum.not_found.value,
                    message="Id doen't not exists",
                    detail=f"User with id={self.dto.post_id} not found",
                    source=Source(
                        local="data/owner_id",
                    ),
                )
            )

Use

async def function():
    validator = CommentValidator(...)
    errors = await validator.errors()
    # or
    await validator.validate() # raise ValidationError