YII 2 relational data from third table - php

Question

I have a database having relationship of three levels. cheque->account->customer. Now I am trying to retrieve data from all three table at same time using the following method.
$query = Cheque::find();
$query->joinWith(['account.customer']);
$query->orderBy('sr desc');
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
Cheque Model:
class Cheque extends \common\components\db\ActiveRecord {
/**
* #inheritdoc
*/
public static function tableName() {
return 'cheque';
}
/**
* #inheritdoc
*/
public function rules() {
return [
[['sr'], 'integer'],
[['ID', 'account_ID'], 'required'],
[['ID', 'account_ID', 'created_by', 'branch_ID', 'application_ID'], 'string'],
[['serial_start', 'serial_end', 'status'], 'number'],
[['created_on'], 'safe']
];
}
/**
* #inheritdoc
*/
public function attributeLabels() {
return [
'ID' => 'ID',
'account_ID' => 'Account ID',
'serial_start' => 'Serial Start',
'serial_end' => 'Serial End',
'created_on' => 'Created On',
'created_by' => 'Created By',
'branch_ID' => 'Branch ID',
'application_ID' => 'Application ID',
'status' => 'Status',
'sr' => 'ID'
];
}
/**
* #return \yii\db\ActiveQuery
*/
public function getAccount() {
return $this->hasOne(Account::className(), ['ID' => 'account_ID']);
}
public static function getActiveChequeBook($account_ID) {
return Cheque::findAll(['account_ID' => $account_ID, 'status' => array_search('Active', \common\models\Lookup::$cheque_status)]);
}
}
But executing this I get the following error:
pre>Exception 'yii\base\InvalidCallException' with message 'Setting read-only property: common\models\Account::customer'

Answer 1

Property customer in your common\models\Account model has no setter (only getCustomer method exists). Check you model and add appropriate property to class.