fix issue #1387

database/gdb/gdb_func.go

@@ -209,7 +209,12 @@ func ConvertDataForTableRecord(value interface{}) map[string]interface{} {
 					data[k] = nil
 				}
 
-			case *time.Time, *gtime.Time:
+			case *gtime.Time:
+				if r.IsZero() {
+					data[k] = nil
+				}
+
+			case *time.Time:
 				continue
 
 			case Counter, *Counter:

database/gdb/gdb_model_insert.go

@@ -83,8 +83,10 @@ func (m *Model) Data(data ...interface{}) *Model {
 					list[i] = ConvertDataForTableRecord(rv.Index(i).Interface())
 				}
 				model.data = list
+
 			case reflect.Map:
 				model.data = ConvertDataForTableRecord(data[0])
+
 			case reflect.Struct:
 				if v, ok := data[0].(apiInterfaces); ok {
 					var (
@@ -98,6 +100,7 @@ func (m *Model) Data(data ...interface{}) *Model {
 				} else {
 					model.data = ConvertDataForTableRecord(data[0])
 				}
+
 			default:
 				model.data = data[0]
 			}

database/gdb/gdb_z_mysql_model_test.go

@@ -3871,3 +3871,44 @@ func Test_Model_FieldAvg(t *testing.T) {
 		t.Assert(all[0]["total"], 1)
 	})
 }
+
+// https://github.com/gogf/gf/issues/1387
+func Test_Model_GTime_DefaultValue(t *testing.T) {
+	table := createTable()
+	defer dropTable(table)
+
+	gtest.C(t, func(t *gtest.T) {
+		type User struct {
+			Id         int
+			Passport   string
+			Password   string
+			Nickname   string
+			CreateTime *gtime.Time
+		}
+		data := User{
+			Id:       1,
+			Passport: "user_1",
+			Password: "pass_1",
+			Nickname: "name_1",
+		}
+		// Insert
+		_, err := db.Model(table).Data(data).Insert()
+		t.AssertNil(err)
+
+		// Select
+		var (
+			user *User
+		)
+		err = db.Model(table).Scan(&user)
+		t.AssertNil(err)
+		t.Assert(user.Passport, data.Passport)
+		t.Assert(user.Password, data.Password)
+		t.Assert(user.CreateTime, data.CreateTime)
+		t.Assert(user.Nickname, data.Nickname)
+
+		// Insert
+		user.Id = 2
+		_, err = db.Model(table).Data(user).Insert()
+		t.AssertNil(err)
+	})
+}