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Can I use an extension method to add a column AND a foreign key constraint with Fluent Migrator?

I have an extension method that is used by several tables:

public static ICreateTableColumnOptionOrWithColumnSyntax WithUser(this ICreateTableWithColumnSyntax tableWithColumnSyntax)
{
    return tableWithColumnSyntax
        .WithColumn("UserId")
            .AsInt32()
            .Nullable();
}

Here is an example table using it:

Create.Table("UserSettings")
    .WithUser()
    .WithColumn("SomeValue")
        .AsString(1)
        .Nullable();

I then have to add a foreign key manually every time like so:

Create.ForeignKey()
    .FromTable("UserSettings")
       .ForeignColumn("UserID")
   .ToTable("Users")
       .PrimaryColumn("Id");

Is there a way to package the foreign key declaration in the extension method WithUser() so that I (and more importantly, other people on my team) don't have to specify it every time?

like image 201
Jared Avatar asked Aug 28 '13 00:08

Jared


1 Answers

This ended up being easier than expected. Here is the code to do this:

public static ICreateTableColumnOptionOrWithColumnSyntax WithUser(this ICreateTableWithColumnSyntax tableWithColumnSyntax)
{
    return tableWithColumnSyntax
        .WithColumn("UserId")
            .AsInt32()
            .Nullable()
            .ForeignKey("Users", "Id");
}

I just wish this was better documented somewhere.

like image 67
Jared Avatar answered Nov 05 '22 07:11

Jared