How to get related data in Active Record Yii2?

Question

Yii

Let's assume there are tables posts and comments connected among themselves one-to-many. (comments.post_id->post.id)
In Laravel, I can get related data by calling one method:

$post = Post::find()
    ->with('comments')
    ->all();

As a result, if I display the posts as an array, I will get something like this:

[
  0 => [
    'id' => 1,
    'title' => 'Some Title',
    'comments' => [
      0 => [
        'id' => 1,
        'comment' => 'Some comment text',
      ],
      1 => [
        'id' => 2,
        'comment' => 'Another comment text',
      ]
      ...
    ]
  ]
  1 => [
    'id' => 2,
    'title' => 'Another Title',
    'comments' => [
      0 => [
        'id' => 3,
        'comment' => 'Some comment text',
      ],
      1 => [
        'id' => 4,
        'comment' => 'Another comment text',
      ]
      ...
    ]
  ]
  ...
]

In yii, using eager loading, you can do something like this

$post = Post::find()
    ->with('comments')
    ->all();

but there will be no comments in the output array.
Is it possible to do something similar in YII as in the Laravel example above?

Answer 1

use geth. in the Post model add for example:

public function getComments(){
        return $this->hasMany(Comments::className(), ['post_id' => 'id']);
}

Answer 2

Are you interested in eager loading?
Use the method you wrote.
$post = Post::find()
->with('comments')
->all();
At the same time, read in the docks how eager loading works in yii2, here zelenin unsubscribes:
www.yiiframework.ru/forum/viewtopic.php?t=22879