Yii2 overriding fields() to rename fields in case of validation errors - rest

Question

Ref: http://www.yiiframework.com/doc-2.0/guide-rest-resources.html#overriding-fields
I am overriding fields() to rename fields in User model.
GET - response data fields are renamed as expected
POST - validation error field names are not renamed
1. User table columns
public function rules()
{
return [
[['User_Name', 'Password', 'Auth_Token', 'User_Type_Id', 'User_Status_Id'], 'required'],
]
}
2. overriding fields()
public function fields()
{
return [
'user_id' => 'User_Id',
'access_token' => 'Auth_Token',
'user_name' => 'User_Name',
'user_type' => 'userType.User_Type_Name',
'name' => 'userProfile.Fname',
];
}
3. Get User data (fields renamed as expected)
[
{
"user_id": "1",
"access_token": "123",
"user_name": "kiran",
"user_type": "Customer",
"name": "customer"
}
]
Validate model (error field names are not renamed)
[
{
"field": "User_Name",
"message": "User Name cannot be blank."
},
{
"field": "Password",
"message": "Password cannot be blank."
},
{
"field": "Auth_Token",
"message": "Auth Token cannot be blank."
},
{
"field": "User_Type_Id",
"message": "User Type ID cannot be blank."
},
{
"field": "User_Status_Id",
"message": "User Status ID cannot be blank."
}
]

Answer 1

Using getter/setter methods to load the post data inside user model.
Ref: Yii2 REST create with fields()
Overwriting addError() method to change error field name
public function addError($attribute, $error = '') {
$renamed_attr = $this->renamedFields($attribute);
parent::addError($renamed_attr, $error);
}