modelBuilder.Configurations.AddFromAssembly 在 EF 核心中
modelBuilder.Configurations.AddFromAssembly in EF Core
在 EntityFramework 6.x
中,如果我们有很多 EntityConfiguration
类 那么我们可以在 OnModelCreating(ModelBuilder modelBuilder)
中分配所有这些,而不是一个一个分配:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Configurations.AddFromAssembly(typeof(MyDbContext).Assembly);
}
有没有像modelBuilder.Configurations.AddFromAssembly
在Entity Framework核心.
对于 EF 核心 <= 2.1
你可以写一个扩展方法如下:
public static class ModelBuilderExtensions
{
public static void ApplyAllConfigurations(this ModelBuilder modelBuilder)
{
var typesToRegister = Assembly.GetExecutingAssembly().GetTypes().Where(t => t.GetInterfaces()
.Any(gi => gi.IsGenericType && gi.GetGenericTypeDefinition() == typeof(IEntityTypeConfiguration<>))).ToList();
foreach (var type in typesToRegister)
{
dynamic configurationInstance = Activator.CreateInstance(type);
modelBuilder.ApplyConfiguration(configurationInstance);
}
}
}
然后在OnModelCreating
如下:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.ApplyAllConfigurations();
}
对于 EF 核心 >= 2.2
从 EF Core 2.2 开始,您无需编写任何自定义扩展方法。为此,EF Core 2.2 添加了 ApplyConfigurationsFromAssembly
扩展方法。您可以按如下方式使用它:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.ApplyConfigurationsFromAssembly(typeof(UserConfiguration).Assembly); // Here UseConfiguration is any IEntityTypeConfiguration
}
谢谢。
在 EntityFramework 6.x
中,如果我们有很多 EntityConfiguration
类 那么我们可以在 OnModelCreating(ModelBuilder modelBuilder)
中分配所有这些,而不是一个一个分配:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Configurations.AddFromAssembly(typeof(MyDbContext).Assembly);
}
有没有像modelBuilder.Configurations.AddFromAssembly
在Entity Framework核心.
对于 EF 核心 <= 2.1
你可以写一个扩展方法如下:
public static class ModelBuilderExtensions
{
public static void ApplyAllConfigurations(this ModelBuilder modelBuilder)
{
var typesToRegister = Assembly.GetExecutingAssembly().GetTypes().Where(t => t.GetInterfaces()
.Any(gi => gi.IsGenericType && gi.GetGenericTypeDefinition() == typeof(IEntityTypeConfiguration<>))).ToList();
foreach (var type in typesToRegister)
{
dynamic configurationInstance = Activator.CreateInstance(type);
modelBuilder.ApplyConfiguration(configurationInstance);
}
}
}
然后在OnModelCreating
如下:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.ApplyAllConfigurations();
}
对于 EF 核心 >= 2.2
从 EF Core 2.2 开始,您无需编写任何自定义扩展方法。为此,EF Core 2.2 添加了 ApplyConfigurationsFromAssembly
扩展方法。您可以按如下方式使用它:
protected override void OnModelCreating(ModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.ApplyConfigurationsFromAssembly(typeof(UserConfiguration).Assembly); // Here UseConfiguration is any IEntityTypeConfiguration
}
谢谢。