Automatically convert datetime to int64 (#1715)

Fix #1714

Reviewed-on: https://gitea.com/xorm/xorm/pulls/1715
Reviewed-by: Jerry <jerry@noreply.gitea.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-committed-by: Lunny Xiao <xiaolunwen@gmail.com>

integrations/session_find_test.go

@@ -962,3 +962,26 @@ func TestDistinctAndCols(t *testing.T) {
 	assert.EqualValues(t, 1, len(names))
 	assert.EqualValues(t, "test", names[0])
 }
+
+func TestDateTimeInt64(t *testing.T) {
+	type DateTimeInt64 struct {
+		Id        int64
+		TimeStamp int64 `xorm:"datetime"`
+	}
+
+	assert.NoError(t, PrepareEngine())
+	assertSync(t, new(DateTimeInt64))
+
+	ts := time.Now().Unix()
+	cnt, err := testEngine.Insert(&DateTimeInt64{
+		TimeStamp: ts,
+	})
+	assert.NoError(t, err)
+	assert.EqualValues(t, 1, cnt)
+
+	var dts []DateTimeInt64
+	err = testEngine.Find(&dts)
+	assert.NoError(t, err)
+	assert.EqualValues(t, 1, len(dts))
+	assert.EqualValues(t, ts, dts[0].TimeStamp)
+}

session_convert.go

@@ -168,7 +168,29 @@ func (session *Session) bytes2Value(col *schemas.Column, fieldValue *reflect.Val
 		} else if strings.EqualFold(sdata, "false") {
 			x = 0
 		} else {
-			x, err = strconv.ParseInt(sdata, 10, 64)
+			if col.SQLType.Name == schemas.DateTime {
+				if len(sdata) == 20 {
+					t, err := time.Parse("2006-01-02T15:04:05Z", sdata)
+					if err != nil {
+						return fmt.Errorf("arg %v as int: %s", key, err.Error())
+					}
+					x = t.Unix()
+				} else if len(sdata) == 19 {
+					var parseFormat = "2006-01-02 15:04:05"
+					if sdata[10] == 'T' {
+						parseFormat = "2006-01-02T15:04:05"
+					}
+					t, err := time.Parse(parseFormat, sdata)
+					if err != nil {
+						return fmt.Errorf("arg %v as int: %s", key, err.Error())
+					}
+					x = t.Unix()
+				} else {
+					x, err = strconv.ParseInt(sdata, 10, 64)
+				}
+			} else {
+				x, err = strconv.ParseInt(sdata, 10, 64)
+			}
 		}
 		if err != nil {
 			return fmt.Errorf("arg %v as int: %s", key, err.Error())