EntityFramework.Extended Audit - 外键属性IsRelationship始终为false

时间:2016-05-31 13:20:38

标签: c# asp.net-mvc entity-framework audit-logging entityframework.extended

我正在使用EntityFramework.Extended库在我的系统中实现审计日志记录。但是,当我在Person对象上更新外键'TitleId'时,它不会将其注册为外键,也不会将Id替换为我选择的显示字段。

审核日志配置(这在我的Global.asax启动文件中调用)

public static class AuditLogConfiguration
    {
        public static void Register()
        {
            var auditConfiguration = AuditConfiguration.Default;

            auditConfiguration.IncludeRelationships = true;
            auditConfiguration.LoadRelationships = true;
            auditConfiguration.DefaultAuditable = true;

            // Use abbreviation value in audit log whenever Title is used as foreign key
            auditConfiguration.IsAuditable<Title>()
                .DisplayMember(x => x.Abbreviation);
        }
    }

人员实体:

public class Person
    {
        [Key]
        public int Id { get; set; }

        [ForeignKey("Title")]
        public int TitleId { get; set; }

        public string Forename { get; set; }
        public string Surname { get; set; }

        public virtual Title Title { get; set; }
}

标题实体:

public class Title
{
    public int Id { get; set; }

    public string Abbreviation { get; set; }
    public string Description { get; set; }
}

更新逻辑:

var audit = BeginAudit();

person.TitleId = model.TitleId;

SaveChanges();

var log = audit.LastLog;

当查看audit.LastLog中的属性更改时,TitleId修改不会被识别为关系,并且不会应用我在配置中指定的显示转换。

1 个答案:

答案 0 :(得分:0)

外键的属性应该放在导航属性上,而不是外键本身:

[ForeignKey("TitleId")]
public virtual Title Title { get; set; }

但在这种情况下,您根本不需要该属性,因为您的类遵循实体框架识别的命名约定

而且,由于Title不是外键 - TitleId,我试试这个:

// Use abbreviation value in audit log whenever TitleId is used as foreign key
auditConfiguration.IsAuditable<TitleId>()
                  .DisplayMember(x => x.Abbreviation);