Correctly format the scanned value of date and time InputFields

pkg/form.go

@@ -35,7 +35,18 @@ func (field *InputField) Scan(value interface{}) error {
 		field.Val = ""
 		return nil
 	}
-	field.Val = fmt.Sprintf("%v", value)
+	switch v := value.(type) {
+	case time.Time:
+		if field.Type == "date" {
+			field.Val = v.Format("2006-01-02")
+		} else if field.Type == "time" {
+			field.Val = v.Format("15:04")
+		} else {
+			field.Val = v.Format(time.RFC3339)
+		}
+	default:
+		field.Val = fmt.Sprintf("%v", v)
+	}
 	return nil
 }