How to get dict without Url(...) on pydantic model.model_dump()?

Question

this is my code:

from pydantic import (
    BaseModel,
    HttpUrl,
)


class MyModel(BaseModel):
    url: HttpUrl


model = MyModel(url="https://io.com")
print(f"model_dump: {model.model_dump()}")
print(f'model_dump_json: "{model.model_dump_json()}"')

Result:

model_dump: {'url': Url('https://io.com/')}
model_dump_json: "{"url":"https://io.com/"}"

Model_dump_json() gives me a string.

How to get dict without Url(...) on pydantic model.model_dump()?

Thanks

I can use json.loads(model.model_dump_json()), but it is not normal.

Answer 1

You can use field_serializer:

from typing import Any

from pydantic import (
    BaseModel,
    HttpUrl,
    field_serializer,
    FieldSerializationInfo
)


class MyModel(BaseModel):
    url: HttpUrl

    @field_serializer("url")
    def ser_url(self, value: Any, info: FieldSerializationInfo):
        return str(value)


model = MyModel(url="https://io.com")
print(f"model_dump: {model.model_dump()}")
print(f'model_dump_json: "{model.model_dump_json()}"')

Output:

model_dump: {'url': 'https://io.com/'}
model_dump_json: "{"url":"https://io.com/"}"