EF 6 Codefirst-使用Fluent API为基类中定义的属性设置默认值

问题描述

我有一个具有审计属性的基类，例如

I have a base class which has audit properties like

public abstract class BaseModel
{
    [Column(Order = 1)]
    public long Id { get; set; }
    public long CreatedBy { get; set; }
    public DateTime CreatedDate { get; set; }
    public long ModifiedBy { get; set; }
    public DateTime ModifiedDate { get; set; }
    public bool IsActive { get; set; }
}

我所有的poco课程都来自于该课程.

All my poco classes derive from this class.

我正在尝试将默认值设置为IsActive属性.我不热衷于使用注释，因此如果我能使用流利的API来解决这个问题，那我就无所适从.

I am trying to set a default value to the IsActive properties. I am not keen on using annotations and hence was wandering if I can work this using fluent API.

我尝试了此操作，但没有用.好像它创建了一个名为BaseModel的新表

I tried this but it does not work. Seems like it creates a new table named BaseModel

modelBuilder.Entity<BaseModel>()
    .Property(p => p.IsActive)
    .HasColumnAnnotation("DefaultValue", true);

有人可以在这里建议一种方法吗?

Can any one suggest a way here?

推荐答案

无法执行此操作.它无法使用Entity Framework设置默认值.相反，您可以使用构造函数

There is no way to do this. It can't set default values with Entity Framework. Instead you can use the constructor

public abstract class BaseModel
{
    protected BaseModel()
    {
        IsActive = true;
    }
}

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