How can I validate data in GraphQL?

How can I validate data in GraphQL?

You can validate data in GraphQL using custom directives or by implementing validation logic in your resolvers.

What are custom directives in GraphQL?

Custom directives allow you to attach additional behavior to your GraphQL schema, such as validation rules.

Can you give me an example of a validation directive?

Sure! You can create a directive like @isEmail that checks if a string is a valid email format before processing.

How do I implement this directive in my schema?

You would define the directive in your schema and then use it in your type definitions, applying it to the relevant fields.