fluentvalidation-patterns

To validate DTOs asynchronously in ABP using FluentValidation, you implement MustAsync rules within your validator classes to perform repository checks. This enforces data integrity during Create and Update workflows by querying the database before processing inputs.

You set up FluentValidation auto-validation in ABP by registering validators within your ApplicationModule. Scan the assembly for validators and enable auto-validation so incoming DTOs are validated automatically before reaching your application services.

Yes, you can use localized error messages with FluentValidation in ABP. The patterns integrate directly with ABP localization resources, allowing you to provide user-friendly, multilingual validation errors across different application modules.

The best way to handle conditional validation rules across multiple DTOs is using When and Unless scenarios. These patterns allow you to enforce multi-condition validations, ensuring complex rules only trigger when specific criteria are met.

Yes, FluentValidation supports repository existence checks for ABP workflows. By using async validation patterns with IRepository, you can verify entity existence and uniqueness during Create and Update operations to maintain strict data integrity.

You create reusable custom validators by building extensible validators and extension methods. This approach standardizes cross-cutting validation concerns across ABP modules, ensuring consistent and testable input validation logic throughout your application.