Web ApI Entity Framework (Code First) Value not appearing in database - sql-server

Question

My database will run correctly, and I can input the data manually via SQL Server, however, when I try and pass the value in via my API (testing using Postman), the value won't pass into the database, it appears as "NULL".
I have a reports and a bookings tables.
This is the code for the reports:
public class Report
{
public Report()
{
Injuries = new List<Injury>();
this.Bookings = new HashSet<Booking>();
}
public int Id { get; set; }
public string Club1 { get; set; }
public string Club2 { get; set; }
public virtual ICollection<Injury> Injuries { get; set; }
public virtual ICollection<Booking> Bookings { get; set; }
}
Bookings:
public class Booking
{
//public Booking()
//{
// Reports = new List<Report>();
//}
public int Id { get; set; }
public string Club { get; set; }
public string PlayerName { get; set; }
public string PlayerNumber { get; set; }
public string Reason { get; set; }
public string Description { get; set; }
//public int? Report_Id { get; set; }
public Nullable<int> Report_Id { get; set; }
public virtual Report Report { get; set; }
//public virtual ICollection<Report> Reports { get; set; }
}
Controller:
//POST: api/Reports
[ResponseType(typeof(Report))]
public async Task<IHttpActionResult> PostReport(Report report)
{
if (!ModelState.IsValid)
{
return BadRequest(ModelState);
}
db.Reports.Add(report);
await db.SaveChangesAsync();
return CreatedAtRoute("DefaultApi", new { id = report.Id }, report);
}
I put the test information via Postman:
I'm not sure why Report_Id is showing as it's not required, however, Report_Id1 is the field that is connecting the Report and Booking together.

Answer 1

Since your foreign key doesn't follow convention (ReportId), you need to use the annotation [ForeignKey] or a fluent api configuration:
modelBuilder.Entity<Booking>()
.HasRequired(b => b.Report)
.WithMany(b => b.Bookings)
.HasForeignKey(p => p.Report_Id);
That is why EF is adding the second Report_ID1. https://msdn.microsoft.com/en-us/data/hh134698.aspx