Use IEntityTypeConfiguration with a base entity

Question

In EF Core 2.0, we have the ability to derive from IEntityTypeConfiguration for cleaner Fluent API mappings (source).

How can I extend this pattern to utili

Answer 1

There is another way to solve the problem, and that is to use Template Method Design Pattern. Like this:

public abstract class BaseEntityTypeConfiguration : IEntityTypeConfiguration
    where TBase : BaseEntity
{
    public void Configure(EntityTypeBuilder entityTypeBuilder)
    {
        //Base Configuration

        ConfigureOtherProperties(builder);
    }

    public abstract void ConfigureOtherProperties(EntityTypeBuilder builder);
}

public class MaintainerConfiguration : BaseEntityTypeConfiguration
{
    public override void ConfigureOtherProperties(EntityTypeBuilder entityTypeBuilder)
    {
        entityTypeBuilder.Property(b => b.CreatedDateUtc).HasDefaultValueSql("CURRENT_TIMESTAMP");        
    }
}

With this way you don't need to write any single line in child configuration.