What are some effective validation techniques in Mongoose?

What are some effective validation techniques in Mongoose?

Mongoose offers several validation techniques, including built-in validators, custom validators, and asynchronous validation. Would you like to know more about a specific type?

Can you explain built-in validators?

Sure! Built-in validators in Mongoose include required, min, max, and enum. For example, you can set a field as required by adding required: true in your schema.

What about custom validators?

Custom validators allow you to define your own validation logic. You can create a function that returns true or false based on your criteria and use it in your schema.

How do I implement asynchronous validation?

Asynchronous validation can be implemented using a promise or a callback function. You can define a custom validator that checks conditions asynchronously, like checking a username's uniqueness.