我有一个模型,它继承自我的项目中的IdentityDbContext,是从使用Visual Studio 2013 Update 2创建的ASP.NET MVC的项目模板创建的。
public partial class MyModel : IdentityDbContext<ApplicationUser>
{
public MyModel()
: base("DefaultConnection")
{
Database.SetInitializer(new DropCreateDatabaseIfModelChanges<MyModel>());
}
//....other properties
public virtual DbSet<ProductClientDiscount> ProductClientPrice { get; set; }
public virtual DbSet<ClientCategoryDiscount> ClientCategoryDiscount { get; set; }
public virtual DbSet<Product> Products { get; set; }
//....other properties
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Entity<ClientCategoryDiscount>().Property(x => x.PercentDiscountRent).HasPrecision(12, 9);
modelBuilder.Entity<ClientCategoryDiscount>().Property(x => x.PercentDiscountSale).HasPrecision(12, 9);
modelBuilder.Entity<ProductClientDiscount>().Property(x => x.PercentDiscountRent).HasPrecision(12, 9);
modelBuilder.Entity<ProductClientDiscount>().Property(x => x.PercentDiscountSale).HasPrecision(12, 9);
modelBuilder.Entity<Product>().Property(x => x.SalePrice).HasPrecision(12, 9);
modelBuilder.Entity<Product>().Property(x => x.RentPrice).HasPrecision(12, 9);
}
}
我需要在创建数据库时更改数据库中的默认小数精度,所以我在其他帖子中发现它应该在OnModelCreating中完成,就像我一样。一切似乎都运行正常,但是,创建数据库时,十进制字段获取默认精度和小数位数(18,2)。我在其他帖子中看到模型继承自DBContext,而不是IdentityDbContext,我不知道是否需要做些什么才能让它工作。我在Visual Studio 2013中使用localdb。感谢任何可以帮助我的人。
答案 0 :(得分:0)
我解决了这个问题。发现Visual Studio创建了一个类 ApplicationDbContext 作为已经从IdentityDbContext继承的项目的一部分,因此MyModel类应该继承自此类,或者我应该在 ApplicationDbContext的OnModelCreating中设置小数属性类:
public partial class MyModel : ApplicationDbContext
{
public MyModel()
: base("DefaultConnection")
{
Database.SetInitializer(new DropCreateDatabaseIfModelChanges<MyModel>());
}
//....other properties
public virtual DbSet<ProductClientDiscount> ProductClientPrice { get; set; }
public virtual DbSet<ClientCategoryDiscount> ClientCategoryDiscount { get; set; }
public virtual DbSet<Product> Products { get; set; }
//....other properties
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Entity<ClientCategoryDiscount>().Property(x => x.PercentDiscountRent).HasPrecision(12, 9);
modelBuilder.Entity<ClientCategoryDiscount>().Property(x => x.PercentDiscountSale).HasPrecision(12, 9);
modelBuilder.Entity<ProductClientDiscount>().Property(x => x.PercentDiscountRent).HasPrecision(12, 9);
modelBuilder.Entity<ProductClientDiscount>().Property(x => x.PercentDiscountSale).HasPrecision(12, 9);
modelBuilder.Entity<Product>().Property(x => x.SalePrice).HasPrecision(12, 9);
modelBuilder.Entity<Product>().Property(x => x.RentPrice).HasPrecision(12, 9);
}
}
两种方式都可以正常使用!