EF Core Fluent Api 链接配置

Question

如何在 EF Core Fluent API 中链接它，而不是为表的每个属性逐行重复：

        builder.Entity<FoodWeight>().HasIndex(x => x.NutrientDatabankNumber);
        builder.Entity<FoodWeight>().Property(x => x.NutrientDatabankNumber).HasColumnName("NDB_No");
        builder.Entity<FoodWeight>().Property(x => x.SequenceNumber).HasColumnName("Seq");
        builder.Entity<FoodWeight>().Property(x => x.Amount).HasColumnName("Amount");
        builder.Entity<FoodWeight>().Property(x => x.Description).HasColumnName("Msre_Desc");
        builder.Entity<FoodWeight>().Property(x => x.GramWeight).HasColumnName("Gm_Wgt");
        builder.Entity<FoodWeight>().Property(x => x.GramWeight).HasColumnName("Gm_Wgt");
        builder.Entity<FoodWeight>().Property(x => x.NumberOfDataPoints).HasColumnName("Num_Data_Pts");
        builder.Entity<FoodWeight>().Property(x => x.StandardDeviation).HasColumnName("Std_Dev");

Answer 1

您始终可以向EntityTypeBuilder 添加扩展方法，但这并不能大大减少冗长：

modelBuilder
    .Entity<FoodWeight>()
    .Configure(
        entity => entity.HasIndex(x => x.NutrientDatabankNumber),
        entity => entity.Property(x => x.NutrientDatabankNumber).HasColumnName("NDB_No"),
        entity => entity.Property(x => x.SequenceNumber).HasColumnName("Seq")
    );

以及扩展方法：

public static class EntityTypeBuilderExtensions
{
    public static void Configure<T>(this EntityTypeBuilder<T> modelBuilder, params Action<EntityTypeBuilder<T>>[] builders) where T : class
    {
        builders
            .ToList()
            .ForEach(builder => builder(modelBuilder));
    }
}