EF Core Audit Configuration using Fluent API

The Audit.EntityFramework.Core also allows you to configure the settings via a Fluent API provided by the method Audit.EntityFramework.Configuration.Setup(). It is the easiest way to configure the library.

The following example configures a BookStore context by including the objects on the output, using the OptOut mode, and it will also exclude entities whose name ends with History from the audit.

Audit.EntityFramework.Configuration.Setup()
    .ForContext<BookStore>(config => config
        .IncludeEntityObjects()
        .AuditEventType("{BookStore}:{BookStoreDb}"))
    .UseOptOut()
        .IgnoreAny(t => t.Name.EndsWith("History"));

You can configure to ignore any specific property to save to the database. The following example ignore the Photo column.

Audit.EntityFramework.Configuration.Setup()
    .ForContext<BookStore>(config => config
        .ForEntity<Author>(_ => _
            .Ignore(a => a.Photo)));

You can also override and format the column values.

Audit.EntityFramework.Configuration.Setup()
    .ForContext<BookStore>(config => config
        .ForEntity<User>(_ => _
            .Override(user => user.OldPassword, null)
            .Format(user => user.Password, pass => new String('*', pass.Length))));

As a result of the above configuration, the OldPassword will always be null, and the Password will be set to several stars (*) equal to the number of password characters.