[Bug] The parse function in dspy's Adapters (ChatAdapter, JSONAdapter) can only partially validate output fields.

[commiyou]

What happened?

The current implementation is as follows.

import pydantic

class MyModel(pydantic.BaseModel):
    model_config = pydantic.ConfigDict(validate_assignment=True)
    value:str = pydantic.Field(max_length=3)

fi = MyModel.model_fields["value"]

pydantic.TypeAdapter(fi.annotation).validate_python("1234")

With this approach, validating "1234" will not raise an error.

The following approach can be used to validate with complete constraints.

getattr(MyModel.__pydantic_validator__.validate_assignment(MyModel.model_construct(), "value", "1234"),"value")

The above approach is based on a Pydantic issue, where you can find more detailed discussions.

pydantic/pydantic#7367

Steps to reproduce

import pydantic

class MyModel(pydantic.BaseModel):
    model_config = pydantic.ConfigDict(validate_assignment=True)
    value:str = pydantic.Field(max_length=3)

fi = MyModel.model_fields["value"]

pydantic.TypeAdapter(fi.annotation).validate_python("1234")

DSPy version

2.6.10