/// <summary>
/// 自动处理对象子级的新数据引用关系
/// </summary>
/// <typeparam name="T">类型参数T</typeparam>
/// <param name="ctx">上下文</param>
/// <param name="t">类型实例</param>
public static void AddNewNavigationData <T>(this DbContext ctx, T t) where T : class, IEntitySet
{
ctx.Save(t);
var properties = typeof(T).GetProperties().Where(x => x.PropertyType.IsFromType(typeof(IEnumerable <IEntitySet>))).ToList();
if (properties.IsNotNullOrEmpty())
{
foreach (var prop in properties)
{
var values = prop.GetValue(t) as IEnumerable <object>;
if (values.IsNotNullOrEmpty())
{
var type = values.FirstOrDefault().GetType();
var foreignKey = type.GetForeignKey <T>();
var property = type.GetProperty(foreignKey);
if (property != null)
{
foreach (var value in values)
{
ctx.AddNewAttachmentData(value);
property.SetValue(value, t.Id);
ctx.Save(value);
}
}
}
}
}
}
