问同一DbContext中选择性审计的设置

EN

public class Student
{
    public int PK_1 { get; set; }
    public string PK_2 { get; set; }
    public string Name { get; set; }
}

public class Student_Audit
{
    public int PK_1 { get; set; }
    public string PK_2 { get; set; }
    public string Name { get; set; }

    public DateTime AuditDate { get; set; }
    public string AuditAction { get; set; }
}

public class SchoolContext : AuditDbContext
{
    protected override void OnModelCreating(ModelBuilder modelBuilder) //<--Tip: its not DbModelBuilder, its Microsoft.EntityFrameworkCore.ModelBuilder 
    {
        modelBuilder.Entity<Student>().HasKey(c => new { c.PK_1, c.PK_2 });
        modelBuilder.Entity<Student_Audit>().HasKey(c => new { c.PK_1, c.PK_2, c.AuditDate });
    }
    public DbSet<Student> Students { get; set; }
    public DbSet<Student_Audit> Students_Audit { get; set; }
}

// Setup audit to use the EF data provider
Audit.Core.Configuration.Setup()
    .UseEntityFramework(_ => _
        .AuditTypeExplicitMapper(m => m
            // Map Student to Student_Audit
            .Map<Student, Student_Audit>((ev, ent, studentAudit) =>     
            {
                //add the action name and the date to the audit entity
                studentAudit.AuditAction = ent.Action;
                studentAudit.AuditDate = DateTime.UtcNow;
            })));

// Configure the EF audit behavior
Audit.EntityFramework.Configuration.Setup()
    .ForContext<SchoolContext>(_ => _.IncludeEntityObjects())   
    .UseOptOut()
        .Ignore<Student_Audit>(); // Do not audit the audit tables

using (var db = new SchoolContext())
{
    db.Database.EnsureCreated();
    var st = new Student() { PK_1 = 1, PK_2 = "one", Name = "John" };
    db.Students.Add(st);
    db.SaveChanges();
}