Nullable fields are created when customizing IdentityUser class in Identity


I am trying to customize IdentityUser class in identity.

public class ApplicationUser : IdentityUser
    public ApplicationUser()
        IsBlocked = false;

    public bool IsBlocked { get; set; }

The problem is: when using code first migrations, the additional field is created nullable. The same if I drop database and recreate it.

CREATE TABLE [dbo].[AspNetUsers] (
    [Id]            NVARCHAR (128) NOT NULL,
    [UserName]      NVARCHAR (MAX) NULL,
    [PasswordHash]  NVARCHAR (MAX) NULL,
    [SecurityStamp] NVARCHAR (MAX) NULL,
    [IsConfirmed]   BIT            NOT NULL,
    [IsBlocked]     BIT            NULL,
    [Discriminator] NVARCHAR (128) NOT NULL,

How can I fix this?

I have boolean fields in other classes on the same DbContext, and they are all created not null (as they should).

Accepted Answer

The original answer, below, assumed you had an abstract base class, and therefore were using TPC, or possibly TPT if you specified the [Table] attribute on the concrete class, rather than TPH.

However, if you are using a non-abstract base class and do not specify a [Table] on your ApplicationUser, and therefore your ApplicationUser and IdentityUser map to a single table, then you are using the TPH scenario. In this scenario any fields from a subclass will be nullable in your single table. The only way to change this is to switch to TPC or TPT.

Original answer

Put the [Required] attribute on your property:

public bool IsBlocked { get; set; }

Your migration should then make it a NON NULL column.

However, if you already have data in your table this will cause issues as it won't know what default value to create. In this case I edit the migration to first make it a NULL column, then run a Sql command to set the values I want, and then AlterColumn make it a NON NULL column

AddColumn("dbo.MyTable", "MyColumn", c => c.Boolean());
Sql("UPDATE MyTable SET MyColumn = 1");
AlterColumn("dbo.MyTable", "MyColumn", c => c.Boolean(nullable: false));

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