How can I implement automated data validation in my project?

How can I implement automated data validation in my project?

To implement automated data validation, you can use libraries like Joi or Yup in JavaScript, or Pydantic in Python. What programming language are you using?

I'm using Python. Can you give me an example with Pydantic?

Sure! With Pydantic, you can define a model like this:

from pydantic import BaseModel, ValidationError

class User(BaseModel):
    name: str
    age: int

try:
    user = User(name='John', age='twenty')  # This will raise a validation error
except ValidationError as e:
    print(e)

What happens if the data doesn't match the model?

If the data doesn't match the model, Pydantic will raise a ValidationError, which you can catch and handle as shown in the example.

Can I validate nested data structures?

Yes, Pydantic supports nested models. You can define a model within another model to validate complex data structures.