Cloudey.FluentValidation.Rules (nuget): Useful validation rules for FluentValidation and Entity Framework Core.  Unique - Validate if the value is unique in the given DbContext for the given entity and property Exists - Validate if the value exists in the given DbContext for the given entity and property  Example: RuleFor(x => x.Email).Unique(context, (User user) => user.Email) Validates that the given email does not already exist for any user in the database.
Keywords: FluentValidation|Rules|Entity|Framework|Core|EF|EFCore|Unique|Exists