[英]Entity Framework 6 0.1 to 0.1 relationship with fluent api
可以說我想在實體框架6中為公司停車場建模:
我知道如何在帶有中間表的關系數據庫中對此建模:
EmployeeCarAssociation
-EmployeeId
-CarId
使用EmpoyeeId
和CarId
作為主鍵,並且在兩列上都具有EmpoyeeId
約束。
但是,如何使用EF6 Fluent Api創建0.1到0.1的關系?
試試這個代碼:
public class Employee
{
public int Id { get; set; }
public Car Car { get; set; }
public int? CarId { get; set; }
}
public class Car
{
public int Id { get; set; }
public Employee Employee { get; set; }
}
public class ApplicationDbContext : DbContext
{
public DbSet<Employee> Employees { get; set; }
public DbSet<Car> Cars { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<Car>()
.HasOptional(c => c.Employee)
.WithOptionalDependent(e => e.Car)
.Map(config =>
{
config.MapKey("EmployeeId");
});
base.OnModelCreating(modelBuilder);
}
}
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