HttpUrl or any other pydantic specific field is not serializable

[sshishov]

If we have a pydantic model with any Pydantic specific fields, then the model will not be properly serialized and the crash will appear.

For instance:

import pydantic
import django_pydantic_field

class MyModel(pydantic.BaseModel):
     my_url: pydantic.HttpUrl = pydantic.HttpUrl('https://example.com/')

obj = MyModel()
field = django_pydantic_field.SchemaField(schema=MyModel)
field.get_prep_value(obj)

And the output will be:

TypeError: Object of type Url is not JSON serializable

It can be fixed if we use the mode=json when we perform _prepare_raw_value inside get_prep_value like this:

def get_prep_value(self, value: t.Any):
        value = self._prepare_raw_value(value, mode='json')
        return super().get_prep_value(value)

Or am I missing something?

[surenkov]

Yep, you're absolutely correct, thank you for reporting this!

I've prepared the fix in #57, will release it under the next patch.