Yii2: How to display multiple one-to-many relationships in view?

Question

Yii

Good day.
The task is to output in the form of a one-to-many relationship, but there can be several such relationships.
There are related tables of orders and products.
In the form you need to display all orders with products.
[ 1 order ] -> [ Product 1, Product 2, ... ]
[ 2 order ] -> [ Product 1, Product 2, ... ]
.....
My eye is already blurry, I can not find a solution to the problem. Thank you for your help / hint in which direction to dig.
-------- Update-------
In models:

public function getOrderItems() {
   return $this->hasMany(OrderItems::className(), ['order_id' => 'id']);
}

public function getOrder() {
   return $this->hasOne(Order::className(), ['id' => 'order_id']);
}

In Controller:

$orders = Order::find()->where(['email' => Yii::$app->user->identity['email']])->all();
    foreach ($orders as $id => $items) {
        $item = $items->getOrderItems()->all();
    }
return $this->render('order', compact('orders'));

Everything is printed out in the controller, but how to transfer it to the view remains a painful mystery for me.

Answer 1

1. Set up links in the model
2. Load the product link and loop through and display all the data in it,
for example:

class Product extends \yii\db\ActiveRecord
{
    ...
}

class Order extends \yii\db\ActiveRecord
{
     ...

    public function getProducts()
    {
        return $this->hasMany(Product::className(), ['order_id' => 'id']);
    }

    ...
}


$orders = Order::find()->with('product')->all();
foreach ($orders as $order) {
    foreach ($order->products as $product) {
        echo 'Order id: ' . $order->id . ' Product Id: ' .  $product->id;
   }
}