用类型检测自引用循环 [英] self referencing loop detected with type

问题描述

实体：

Entities:

 public class Trips
    {


        [Key]
        public int TripID { get; set; }
        public int TripNumber { get; set; }
        public string TripStartDate { get; set; }
        public virtual ICollection<layover> Layovers { get; set; }
    }
     //[SerializableAttribute]
    public class layover
    {
        [Key]
        public int ID { get; set; }
        public int Sequnce { get; set; }
        public string DepatureAirport { get; set; }
        public string DepatureDate { get; set; }
        public string DepatureTime { get; set; }
        public string DepatureFlight { get; set; }
        public string ArrivalAirport { get; set; }
        public string ArrivalDate { get; set; }
        public string ArrivalTime { get; set; }
        public string ArrivalFlight { get; set; }
        public string HotelCode { get; set; }
        public string CrewMeal1 { get; set; }
        public string CrewMeal2 { get; set; }
        public string CrewMeal3 { get; set; }

        public int TripRefID { get; set; }
        [ForeignKey("TripRefID")]
        public virtual Trips Trips { get; set; }
        // public Trips Trips { get; set; }

    }
DBContext::
public class HomeDBContext : DbContext
    {

        public HomeDBContext()
            : base()
        {
            Database.SetInitializer<homedbcontext>(new HomeDBInitializer<homedbcontext>());

        }
        public DbSet<trips> Trips { get; set; }
        public DbSet<layover> layover { get; set; }

    }
API Controller method:
public object Get(int id)
        {

            HomeDBContext dbHomeDBContext = new HomeDBContext();
            List<trips> lstTrips = dbHomeDBContext.Trips.ToList();
            List<layover> lstlayover = dbHomeDBContext.layover.ToList();
            List<trips> lstFinalTrips = (from t in lstTrips
                                         select new Trips
                                         {
                                             TripID = t.TripID,
                                             TripNumber = t.TripNumber,
                                             TripStartDate = t.TripStartDate
                                            ,Layovers = (from l in lstlayover where l.TripRefID == t.TripID select l).ToList()

                                         }).ToList<trips>();
            dbHomeDBContext.Configuration.ProxyCreationEnabled = false;
            // return lstFinalTrips;

            string json = JsonConvert.SerializeObject(lstFinalTrips, Newtonsoft.Json.Formatting.Indented,
   new JsonSerializerSettings { ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
            //return json;
            return lstFinalTrips;


        }
Angular JS:

    $scope.ServerGet = function () {

        alert('Fired');
        // Calling Controller Method
        $http({
            method: 'GET',
            url: serviceBaseLocal + 'Demo/Get?id=5'
        }).success(function (data) {         
            $scope.Trips = data;
            alert(JSON.stringify($scope.Trips))
           
        }).error(function (data) {
            alert(JSON.stringify(data));
        });


    };

错误：

自我引用循环检测类型等。

Error:
self referencing loop detected with type etc.

推荐答案

scope.ServerGet = function（）{

alert（ ' 已解雇'）;
// 调用控制器方法

scope.ServerGet = function () { alert('Fired'); // Calling Controller Method

http（ {
方法：' GET'，
url：serviceBaseLocal + ' Demo / Get？id = 5'
}）。success（function（data）{

http({ method: 'GET', url: serviceBaseLocal + 'Demo/Get?id=5' }).success(function (data) {

scope.Trips = data;
alert（JSON.stringify（

scope.Trips = data; alert(JSON.stringify(

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