MVC EntityFramework user roles are not coming through in context - entity-framework

Question

I have the following models:
User:
public class User : IEntity, INamedType
{
public virtual int UserId { get; set; }
[Column(TypeName = "varchar")]
[StringLength(100)]
public virtual string UserName { get; set; }
[Column(TypeName = "varchar")]
[StringLength(100)]
public virtual string FirstName { get; set; }
[Column(TypeName = "varchar")]
[StringLength(100)]
public virtual string LastName { get; set; }
[Column(TypeName = "varchar")]
[StringLength(200)]
public virtual string EmailAddress { get; set; }
public int AreaId { get; set; }
[Column(TypeName = "varchar")]
[StringLength(64)]
public string CreatedByUserName { get; set; }
public DateTime CreatedDateTime { get; set; }
[Column(TypeName = "varchar")]
[StringLength(64)]
public string LastModifiedByUserName { get; set; }
public DateTime? LastModifiedDateTime { get; set; }
public bool Active { get; set; }
//Navigation properties
public virtual Area Area { get; set; }
public virtual ICollection<Role> Roles { get; set; }
}
Role:
public class Role : IEntity
{
public int RoleId { get; set; }
[Column(TypeName = "varchar")]
[StringLength(100)]
public string Name { get; set; }
[Column(TypeName = "varchar")]
[StringLength(1000)]
public string Description { get; set; }
[Column(TypeName = "varchar")]
[StringLength(64)]
public string CreatedByUserName { get; set; }
public DateTime CreatedDateTime { get; set; }
[Column(TypeName = "varchar")]
[StringLength(64)]
public string LastModifiedByUserName { get; set; }
public DateTime? LastModifiedDateTime { get; set; }
//Navigation Properties
public ICollection<User> Users { get; set; }
}
UserRole:
public class UserRole
{
public int UserId { get; set; }
public int RoleId { get; set; }
//Navigation properties
public virtual User User { get; set; }
public virtual Role Role { get; set; }
}
I also have a CustomRoleProvider with this method:
public override string[] GetRolesForUser(string username)
{
var user = _unitOfWork.UserRepository.GetUser(username);
var roles = from r in user.Roles
select r.Name;
if (roles != null)
return roles.ToArray();
else
return new string[] { };
}
so this all works fine until a an entry is added or removed from the UserRole table. For the User this record relates to the new Role when added by adding a UserRole row does not come through in the GetRolesForUser method. Likewise if a UserRole record is removed the Role keeps coming through for the record.
If however an IISReset occurs then all the correct records come through.
Anyone know why this would be happening and how to rectify?

Answer 1

The UserRole entity class conflicts with the join table created by EF for the many to many relationship.
You should either remove the UserRole entity or map the relationships in User and Role to the join entity
public class User : IEntity, INamedType
{
public virtual int UserId { get; set; }
public virtual ICollection<UserRole> Roles { get; set; }
}
public class Role : IEntity
{
public int RoleId { get; set; }
//Navigation Properties
public ICollection<UserRole> Users { get; set; }
}