當運行我的第一個asp.net mvc應用程序時,我得到了這個錯誤 我認爲實體框架會自動創建以ID結尾的列名的鍵?它不正確嗎?EntityType'ApplicantPosition'沒有定義的鍵
正如您所見,ApplicantPositionID將是一個以2列作爲主鍵的表格,因爲它與申請人以及位置有關。模型生成過程中檢測到
一個或多個驗證錯誤:
System.Data.Edm.EdmEntityType: : EntityType 'ApplicantImage' has no key defined. Define the key for this EntityType.
System.Data.Edm.EdmEntityType: : EntityType 'ApplicationPositionHistory' has no key defined. Define the key for this EntityType.
System.Data.Edm.EdmEntitySet: EntityType: EntitySet �ApplicantsPositions� is based on type �ApplicantPosition� that has no keys defined.
System.Data.Edm.EdmEntitySet: EntityType: EntitySet �ApplicantImages� is based on type �ApplicantImage� that has no keys defined.
System.Data.Edm.EdmEntitySet: EntityType: EntitySet �ApplicationsPositionHistory� is based on type �ApplicationPositionHistory� that has no keys defined.
錯誤被拋出這一行:
public ActionResult Index()
{
return View(db.Positions.ToList());
}
而且我的模型是下列之一:
namespace HRRazorForms.Models
{
public class Position
{
public int PositionID { get; set; }
[StringLength(20, MinimumLength=3)]
public string name { get; set; }
public int yearsExperienceRequired { get; set; }
public virtual ICollection<ApplicantPosition> applicantPosition { get; set; }
}
public class Applicant
{
public int ApplicantId { get; set; }
[StringLength(20, MinimumLength = 3)]
public string name { get; set; }
public string telephone { get; set; }
public string skypeuser { get; set; }
public ApplicantImage photo { get; set; }
public virtual ICollection<ApplicantPosition> applicantPosition { get; set; }
}
public class ApplicantPosition
{
public int ApplicantID { get; set; }
public int PositionID { get; set; }
public virtual Position Position { get; set; }
public virtual Applicant Applicant { get; set; }
public DateTime appliedDate { get; set; }
public int StatusValue { get; set; }
public Status Status
{
get { return (Status)StatusValue; }
set { StatusValue = (int)value; }
}
//[NotMapped]
//public int numberOfApplicantsApplied
//{
// get
// {
// int query =
// (from ap in Position
// where ap.Status == (int)Status.Applied
// select ap
// ).Count();
// return query;
// }
//}
}
public class ApplicantImage
{
public int ApplicantId { get; private set; }
public byte[] Image { get; set; }
}
public class Address
{
[StringLength(20, MinimumLength = 3)]
public string Country { get; set; }
[StringLength(20, MinimumLength = 3)]
public string City { get; set; }
[StringLength(20, MinimumLength = 3)]
public string AddressLine1 { get; set; }
public string AddressLine2 { get; set; }
}
public class ApplicationPositionHistory
{
public ApplicantPosition applicantPosition { get; set; }
public Status oldStatus { get; set; }
public Status newStatus { get; set; }
[StringLength(500, MinimumLength = 10)]
public string comments { get; set; }
public DateTime dateModified { get; set; }
}
public enum Status
{
Applied,
AcceptedByHR,
AcceptedByTechnicalDepartment,
InterviewedByHR,
InterviewedByTechnicalDepartment,
InterviewedByGeneralManager,
AcceptedByGeneralManager,
NotAccepted
}
}
我將圖像移動到申請人類,因爲我不想爲它創建表。我在需要的地方明確地[Key]。現在它工作正常。謝謝 –