Make Your Business Rules Cleaner With Fluent Validation

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Fluent Validation is a library for easily implementing rich validation rules. It also has support for asynchronous validation, which means you can test your business rules as part of your validation pipeline. I will show you how to validate a business rule in your validator by asynchronously calling the database.

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Chapters

0:00 Implementing the Create Customer use case

3:25 Enforcing email uniqueness business rule

5:32 Adding FluentValidation and async validation

8:22 Registering FluentValidation with DI

9:03 Creating an endpoint for the use case

10:36 Running validation with IValidator

13:19 Enforcing unique constraints in the database