EF6 Create Code First Table with column default value - asp.net-mvc

Question

I work WITH ASP.NET MVC 5 and EF6, I used code-first method to generate a database.
Entity class:
[Table("Simple")]
public class SimpleEntity
{
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
[Column("id")]
public long Id { get; set; }
[Column("name")]
public string name { get; set; }
[Column("deleted")]
public bool deleted { get; set; }
public SimpleEntity()
{
}
}
EntityTypeConfiguration class:
public class SimpleEntityConfig : EntityTypeConfiguration<SimpleEntity>
{
protected SimpleEntity()
{
HasKey(a => a.Id);
}
}
I want this strategy to generate a table with this query:
CREATE TABLE Simple
(
id int NOT NULL,
name varchar(255) NOT NULL,
deleted bit DEFAULT 'TRUE'
);
Important for me to generate a column in the table with DEFAULT value, what is the solution?

Answer 1

entity.Property(t => t.deleted)
.HasDatabaseGeneratedOption(DatabaseGeneratedOption.Computed);

Answer 2

You can create a table with column having default value by simply adding defaultValue in generated migration code.
After creating SimpleEntity Class, run Add-Migration TestSimpleEntity command to generate migration code. You will get below code in Up() method:
public partial class TestSimpleEntity : DbMigration
{
public override void Up()
{
CreateTable(
"dbo.SimpleEntities",
c => new
{
id = c.Long(nullable: false, identity: true),
name = c.String(),
deleted = c.Boolean(nullable: false),
})
.PrimaryKey(t => t.id);
}
public override void Down()
{
DropTable("dbo.SimpleEntities");
}
}
Just add defaultValue parameter in CreateTable method for deleted property:
public partial class TestSimpleEntity : DbMigration
{
public override void Up()
{
CreateTable(
"dbo.SimpleEntities",
c => new
{
id = c.Long(nullable: false, identity: true),
name = c.String(),
deleted = c.Boolean(nullable: false, defaultValue: true),
})
.PrimaryKey(t => t.id);
}
public override void Down()
{
DropTable("dbo.SimpleEntities");
}
}
After that, run update-database -verbose command, you will observe that EF will generate query which will contain Default value.
Below is the Table Definition from Server Explorer:
CREATE TABLE [dbo].[SimpleEntities] (
[id] BIGINT IDENTITY (1, 1) NOT NULL,
[name] NVARCHAR (MAX) NULL,
[deleted] BIT DEFAULT ((1)) NOT NULL,
CONSTRAINT [PK_dbo.SimpleEntities] PRIMARY KEY CLUSTERED ([id] ASC)
);