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code/allapp/allapp-go/utils/pgtypex/pgtypex.go

@@ -149,3 +149,13 @@ func Int32ToPgInt4(value int32) pgtype.Int4 {
 		Valid: true,
 	}
 }
+
+func TimePtrToPgDate(t *time.Time) pgtype.Date {
+	if t == nil {
+		return pgtype.Date{Valid: false} // ⭐ SQL NULL → 不限时间
+	}
+	return pgtype.Date{
+		Time:  *t, // ⭐ 关键：解引用
+		Valid: true,
+	}
+}

code/allapp/allapp-go/utils/timex/index.go

@@ -5,9 +5,9 @@ import (
 	"time"
 )
 
-func ParseTimeFlexible(value string) (time.Time, error) {
+func ParseTimeFlexible(value string) (*time.Time, error) {
 	if value == "" {
-		return time.Time{}, fmt.Errorf("empty time string")
+		return nil, nil // ⭐ 空字符串 → 不限时间
 	}
 
 	layouts := []string{
@@ -18,13 +18,12 @@ func ParseTimeFlexible(value string) (time.Time, error) {
 		time.RFC3339,
 	}
 
-	var err error
 	for _, layout := range layouts {
-		var t time.Time
-		t, err = time.Parse(layout, value)
+		t, err := time.Parse(layout, value)
 		if err == nil {
-			return t, nil
+			return &t, nil
 		}
 	}
-	return time.Time{}, fmt.Errorf("unsupported time format: %s", value)
+
+	return nil, fmt.Errorf("unsupported time format: %s", value)
 }