rework how references are found in Document.Populate

document.go

@@ -301,9 +301,9 @@ func (d *Document) Populate(fields ...string) {
 		for _, field := range fields {
 			// 0 = fieldname, 1 = typename, 2 = bson name
 
-			r, _ := readFields(field, cm)
+			r, refOk := cm.references[field]
 
-			if r.exists {
+			if refOk {
 				// get self
 				// get ptr
 				// find
@@ -328,8 +328,11 @@ func (d *Document) Populate(fields ...string) {
 					asIDocument.markPopulated(field)
 				}
 
-				tmp1 = populate(r, refColl.collection, rawDoc, field, reflect.ValueOf(d.self).Interface())
-				d.self = tmp1
+				v := reflect.ValueOf(d.self)
+				tt := v.Elem().Type()
+				tmp1 = populate(r, refColl.collection, rawDoc, field, d.self)
+				nv := reflect.NewAt(tt, v.UnsafePointer())
+				nv.Elem().Set(reflect.ValueOf(tmp1).Elem())
 			}
 		}
 	}

query.go

@@ -611,10 +611,18 @@ func (q *Query) Exec(result interface{}) {
 			imodel, ok := cur.Interface().(IDocument)
 			if ok {
 				imodel.setExists(true)
+				imodel.SetSelf(imodel)
 				doc.Elem().Index(i).Set(reflect.ValueOf(imodel))
 			}
 		}
 	}
+
+	if idoc, ok := q.doc.(IDocument); ok {
+		idoc.SetSelf(result)
+	}
+	if rdoc, ok2 := result.(IDocument); ok2 {
+		rdoc.SetSelf(result)
+	}
 	reflect.ValueOf(result).Elem().Set(reflect.ValueOf(q.doc).Elem())
 	q.done = true
 }