fix json error

models/person.go

@@ -8,12 +8,6 @@ import (
 
 type Persons []Person
 
-type Person struct {
-	Id        int    `gorm:"primaryKey" json:"id"`
-	FirstName string `gorm:"column:firstName" json:"firstName"`
-	LastName  string `gorm:"column:lastName" json:"lastName"`
-}
-
 // --- Implement driver.Valuer (for saving to DB)
 func (r Persons) Value() (driver.Value, error) {
 	return json.Marshal(r)
@@ -27,3 +21,23 @@ func (r *Persons) Scan(value any) error {
 	}
 	return json.Unmarshal(bytes, r)
 }
+
+type Person struct {
+	Id        int    `gorm:"primaryKey" json:"id"`
+	FirstName string `gorm:"column:firstName" json:"firstName"`
+	LastName  string `gorm:"column:lastName" json:"lastName"`
+}
+
+// --- Implement driver.Valuer (for saving to DB)
+func (r Person) Value() (driver.Value, error) {
+	return json.Marshal(r)
+}
+
+// --- Implement sql.Scanner (for reading from DB)
+func (r *Person) Scan(value any) error {
+	bytes, ok := value.([]byte)
+	if !ok {
+		return fmt.Errorf("failed to unmarshal Settings: %v", value)
+	}
+	return json.Unmarshal(bytes, r)
+}