Entity-framework The column name is specified more than once in the SET clause or column list of an INSERT - entity-framework

Question

I have entity
public class ImageTeam
{
public int Id { get; set; }
public int TeamID { get; set; }
public Team Team { get; set; }
public int PostTeamID { get; set; }
public string Image { get; set; }
public int ImageType { get; set; }
public int StatusPublic { get; set; }
public int StatusActive { get; set; }
public DateTime CreatedAt { get; set; }
}
public class Team
{
public int Id { get; set; }
public string Name { get; set; }
public int NoMember { get; set; }
public float Score { get; set; }
public int StatusActive { get; set; }
public int TeamType { get; set; }
public virtual List<TeamGroup> ListMember { get; set; }
public virtual List<ImageTeam> ListAvatar { get; set; }
public virtual List<ImageTeam> ListBanner { get; set; }
public DateTime CreatedAt { get; set; }
}
config data context
modelBuilder.Entity<Team>(entity =>
{
entity.HasMany(x => x.ListAvatar)
.WithOne(t => t.Team)
.HasForeignKey(pv => pv.TeamID);
});
when I post the data insert a new record entity ImageTeam then it show exception
I need to do...Help me

Answer 1

In the Team class you add another relation ListBanner to ImageTeam class ,you have not set an foreign key for it, so EF automatically creates a TeamID and because TeamId already in the class, it's throw exception . You also need to set an foreign key for second relation.
public class ImageTeam
{
public int Id { get; set; }
public int TeamID { get; set; }
public Team Team { get; set; }
public int BannerTeamId { get; set; }
public Team BannerTeam { get; set; }
public int PostTeamID { get; set; }
public string Image { get; set; }
public int ImageType { get; set; }
public int StatusPublic { get; set; }
public int StatusActive { get; set; }
public DateTime CreatedAt { get; set; }
}
entity.HasMany(x => x.ListAvatar)
.WithOne(t => t.Team)
.HasForeignKey(pv => pv.TeamID).OnDelete(DeleteBehavior.Restrict);
entity.HasMany(x => x.ListBanner)
.WithOne(t => t.BannerTeam)
.HasForeignKey(pv => pv.BannerTeamId).OnDelete(DeleteBehavior.Restrict);

Answer 2

I have found a solution:
edit Team entity:
public class Team
{
public int Id { get; set; }
public string Name { get; set; }
public int NoMember { get; set; }
public float Score { get; set; }
public int StatusActive { get; set; }
public int TeamType { get; set; }
public virtual List<TeamGroup> ListMember { get; set; }
public virtual List<ImageTeam> ListImage { get; set; }
public DateTime CreatedAt { get; set; }
}
*no config data context
create new model: TeamViewModel
public class TeamViewModel
{
public int Id { get; set; }
public string Name { get; set; }
public int NoMember { get; set; }
public float Score { get; set; }
public int StatusActive { get; set; }
public int TeamType { get; set; }
public virtual List<TeamGroupViewModel> ListMember { get; set; }
public virtual List<ImageTeam> ListImage { get; set; }
public string AvatarUrl { get; set; }
public virtual List<ImageTeam> ListAvatar { get; set; }
public string BannerUrl { get; set; }
public virtual List<ImageTeam> ListBanner { get; set; }
public virtual List<ImageTeam> ListPost { get; set; }
}
in controller :
[Route("api/[controller]/{id}/view")]
[HttpGet("{id}")]
public IActionResult GetById(int id)
{
var team = _teamService.GetById(id);
var model = _mapper.Map<TeamViewModel>(team);
model = parserImageTeam(model);
return Ok(model);
}
[Route("api/[controller]/{UserId}/view-teams")]
[HttpGet("{UserId}")]
public IActionResult GetAllTeamOfUser(int UserId)
{
// list teams
var teams = _teamService.GetTeamOfUser(UserId);
var _teams = _mapper.Map<IList<TeamViewModel>>(teams);
var newTeams = new List<TeamViewModel>();
foreach (TeamViewModel team in _teams)
{
newTeams.Add(parserImageTeam(team));
}
return Ok(newTeams);
}
private TeamViewModel parserImageTeam(TeamViewModel teamModel)
{
var imageAvatars = new List<ImageTeam>();
var imageBanners = new List<ImageTeam>();
var imagePosts = new List<ImageTeam>();
bool avt = false, banner = false;
foreach (ImageTeam image in teamModel.ListImage)
{
if (image.ImageType == Constants.ImageType.IMAGE_AVATAR_TEAM)
{
image.Image = parserUrlImage(image);
imageAvatars.Add(image);
if (!avt)
{
teamModel.AvatarUrl = image.Image;
avt = true;
}
}
if (image.ImageType == Constants.ImageType.IMAGE_BANNER_TEAM)
{
image.Image = parserUrlImage(image);
imageBanners.Add(image);
if (!banner)
{
teamModel.BannerUrl = image.Image;
banner = true;
}
}
if (image.ImageType == Constants.ImageType.IMAGE_POST_TEAM)
{
image.Image = parserUrlImage(image);
imagePosts.Add(image);
banner = true;
}
}
teamModel.ListAvatar = imageAvatars;
teamModel.ListBanner = imageBanners;
teamModel.ListPost = imagePosts;
return teamModel;
}
private string parserUrlImage(ImageTeam model)
{
string url = Configuration.GetValue<string>("BaseVariables:BaseUrl");
// another controller handle request (ImagesController)
return model.Image = url + "/Images/" + Constants.ImageType.getFolderName(model.ImageType).ToLower() + "/" + model.TeamID + "?ImageType=" + model.ImageType + "&imageName=" + model.Image;
}