How can I implement schema validation in my application?

How can I implement schema validation in my application?

You can implement schema validation by using libraries like Joi or Yup in JavaScript, or Pydantic in Python.

Can you give me an example using Joi?

Sure! Here's a simple example:

const Joi = require('joi');

const schema = Joi.object({
  name: Joi.string().min(3).required(),
  age: Joi.number().integer().min(0).required()
});

const result = schema.validate({ name: 'John', age: 25 });
console.log(result);

What happens if the validation fails?

If the validation fails, Joi will return an error object that describes what went wrong, allowing you to handle it accordingly.

Can I use schema validation for API requests?

Absolutely! Schema validation is commonly used to validate incoming data in API requests to ensure it meets the expected format.