What is advanced schema validation in APIs?

What is advanced schema validation in APIs?

Advanced schema validation refers to the process of ensuring that the data sent to and from an API adheres to a defined structure or schema, often using tools like JSON Schema.

Why is it important for API development?

It's crucial because it helps catch errors early, ensures data integrity, and improves the overall reliability of the API.

Can you give me an example of how to implement it?

Sure! You can use libraries like Ajv in JavaScript to validate JSON data against a schema. Here's a simple example:

const Ajv = require('ajv');
const ajv = new Ajv();
const schema = { type: 'object', properties: { name: { type: 'string' } }, required: ['name'] };
const validate = ajv.compile(schema);
const data = { name: 'John' };
const valid = validate(data);
if (!valid) console.log(validate.errors);