InverseProperty实体框架7

Question

I am facing a problem with EF7 inverse property. There are two entities that are connected like this.

public class Employee
    {
        public int Id { get; set; }
    }

public class Review
{
    public int Id { get; set; }

    [Required]
    public virtual Employee Employee { get; set; }

    [Required]
    public Employee Manager { get; set; }
 }

I want to access a list of the reviews when I start to query my employees, so I tried to do this:

public class Employee
    {
        public Employee()
        {
            Reviews = new List<Review>();
        }
        public int Id { get; set; }

        [InverseProperty("Employee")]
        public virtual ICollection<Review> Reviews { get; set; }
    }

With this, the query is not well made and return this error:

Invalid column name 'EmployeeId1' .

This is the part of the query where is the error:

SELECT [ua].[Id], [r].[EmployeeId], [r].[EmployeeId1], [r1].[EmployeeId], [r1].[EmployeeId1]
FROM [UserAssessment] AS [ua]
LEFT JOIN [Review] AS [r] ON [ua].[ReviewId] = [r].[Id]
LEFT JOIN [Review] AS [r1] ON [ua].[ReviewId] = [r1].[Id]

Anyone know what can I do?

UPDATE

This statement is generating the query:

return this.DbSet
.Include(ua => ua.Employee).ThenInclude(t => t.Role)
.Include(ua => ua.Review).ThenInclude(rt => rt.ReviewType)
.Include(ua => ua.Review).ThenInclude(rt => rt.Manager).ThenInclude(r => r.Role)

I have to access with those same includes because lazy loading is not available on EF7 yet.

Answer 1

You need the InverseProperty on both the Employee and Review

public class Review
{
    public int Id { get; set; }

    [Required]
    [InverseProperty("Reviews")]
    public Employee Employee { get; set; }

    [Required]
    public Employee Manager { get; set; }
 }

public class Employee
    {
        public int Id { get; set; }

        [InverseProperty("Employee")]
        public ICollection<Review> Reviews { get; set; }
    }

Should work. I have a similar setup where it creates the navigation without creating any new fields. If this doesn't work let me know and I'll spin up a test project.

Also note, that EF7 currently ignores virtual and this does not have meaning like it did in EF6.