Yii2: How to get a new line in a Gridview column

[indicalabs]

What steps will reproduce the problem?

I am traing to display two attributes in a single GridView::widget column, with a new line in between them.
Below is the code, but the "\n". or br tag is not converting into new line. Is there any alternative way?
[ 'label' => 'Message', 'attribute' => 'message', 'value' => function ($searchModel) { return Yii::$app->formatter->asNtext($searchModel->message)."\n".Yii::$app->formatter->asDatetime($searchModel->sent_time); }, ],

What is the expected result?

New Line in between attribute values

What do you get instead?

No new line in between attributes

Additional info

| Q | A |
| --- | --- |
| Yii version | Latest |
| PHP version | 7 |
| Operating system | Linux |

Thank you for your help

[cebe]

the output will be html so you should use a <br> instead of \n.

[yii-bot]

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[indicalabs]

@cebe Thank you for your help.
'format' => 'html', with a <br> tag fixed the issue.