pydantic升级v2后，pydantic_model_creator生成schema时optional字段还是需要必填

[1229984599]

Describe the bug 在v2版本中optional字段必须设置默认值后才会是选填

Expected behavior 希望可以添加default字段到代码中

[Nautalis]

I'm getting this issue as well. This is also my first Github issue, so please let me know if I'm doing anything wrong.

If I create a Tortoise model Manufacturer, like:

/app/models.py

class Manufacturer(Model):
    id = fields.IntField(pk=True)

    company_name = fields.CharField(max_length=50, unique=True)
    logo_url = fields.CharField(max_length=255, null=True)
    website_url = fields.CharField(max_length=255, null=True)

    def __str__(self):
        return self.company_name

Then use pydantic_model_creator to generate a Pydantic model from it, such as:

/app/schema.py

Tortoise.init_models(["app.models"], "models")

Manufacturer_Pydantic = pydantic_model_creator(Manufacturer, name="Manufacturer")

Then the Pydantic model that comes out the other end requires the logo_url and website_url fields, despite the documentation stating that the pydantic_model_creator function should read the null=True argument, and make the fields Optional accordingly.

[1229984599]

你按照截图在413行的位置加上default这个参数就能正常使用了，由于作者还没有修复，我自己在外部重写了pydantic_model_creator来应急用 @Nautalis

[long2ice]

Thanks! Could you make a PR?

[plusiv]

@long2ice this one was solved with #1465