[英]EF Core Code First, 2 Many to one relations of same object
我有 2 個具有以下結構的類,Person 與 SchoolClass 有 2 個多一關系:
public class Person
{
public int Id { get; set; }
public List<SchoolClass> SchoolClasses { get; set; }
public List<SchoolClass> OldSchoolClasses { get; set; }
}
public class SchoolClass
{
public int Id { get; set; }
public string Name { get; set; }
}
我可以添加 ghostProps 但不能更改類。
當我為 EFCore 進行遷移時,它會將 2 個不同的人員 ID 添加到我想避免的 SchoolClass 表中。
我想生成 2 個多對多表:
Fluent API 可以做到這一點嗎?
也許您應該嘗試 inheritance:
public class SchoolClass // this could be abstract
{
public int Id { get; set; }
public string Name { get; set; }
}
public class NewSchoolClass : SchoolClass
{
}
public class OldSchoolClass : SchoolClass
{
}
public class Person
{
public int Id { get; set; }
public IList<NewSchoolClass> NewSchoolClasses { get; set; }
public IList<OldSchoolClass> OldSchoolClasses { get; set; }
}
在 DbContext 中:
-DbSet<SchoolClass> SchoolClasses { get; set; }
+DbSet<OldSchoolClass> OldSchoolClasses { get; set; }
+DbSet<NewSchoolClass> NewSchoolClasses { get; set; }
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