Outputting data from two tables into one gridview yii2?

Question

Yii

There are two tables without keys. For each created a model (Order and Manager). For Order, I created a crud gridview and wrote the following in its model

public function getManager(){
        return $this->hasMany(Manager::className(), ['order_managerId' => 'manager_id']);
    }

where order_managerId is a column from the table in which this function is written, and manager_id is a column from the second table. I want to display manager_firstName instead of id from the second table. The question is, am I doing the right thing? In view, I tried several options, while it gives an error.

Answer 1

UPD. Changed to public function getManager(){
return $this->hasOne(Manager::className(), ['manager_id' => 'order_managerId']);
} Everything worked