{"Unknown column 'Extent2.Menu_Object_ID' in 'where clause'"}

MenuItem mnItem;
            var menuObjects = (from m in context.MenuObjects
                               join r in context.UserRights on m.ID equals r.MenuObjectID
                               where m.ParentMenuObjectID == parentID && r.RoleID == roleID &&
                               (r.HasDelete == true || r.HasEdit == true || r.HasFullControl == true || r.HasNew == true || r.HasView == true)
                               orderby m.DisplayOrder
                               select m).Distinct();

public  class Right
    {
        [Key]
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        [Column("ID", TypeName = "int")]
        public Int32 ID { get; set; }

        [Column("Role_ID", TypeName="int")]
        public Int32 RoleID { get; set; }

        [Column("Menu_Object_ID", TypeName = "int")]
        public Int32 MenuObjectID { get; set; }

        [Column("Is_New", TypeName = "bit")]
        [Display(Name = "Is New")]
        public Boolean HasNew { get; set; }

        [Column("Is_View", TypeName = "bit")]
        [Display(Name = "Is View")]
        public Boolean HasView { get; set; }

        [Column("Is_Edit", TypeName = "bit")]
        [Display(Name = "Is Edit")]
        public Boolean HasEdit { get; set; }

        [Column("Is_Delete", TypeName = "bit")]
        [Display(Name = "Is Delete")]
        public Boolean HasDelete { get; set; }

        [Column("Is_Full", TypeName = "bit")]
        [Display(Name = "Is Full")]
        public Boolean HasFullControl { get; set; }

        [Column("Created_On")]
        public DateTime CreatedOn { get; set; }

        [Column("Created_By",  TypeName="int")]
        public Int32 CreatedBy { get; set; }

        [Column("Modified_On")]
        public DateTime? ModifiedOn { get; set; }

        [Column("Modified_By", TypeName = "int")]
        public Int32? ModifiedBy { get; set; }

        [ForeignKey("MenuObjectID")]
        public virtual MenuObject MenuObject { get; set; }

        [ForeignKey("RoleID")]
        public virtual UserRole Role { get; set; }

    }