Image in gridview in yii2

Try like,

 array(
'format' => 'image',
'value'=>function($data) { return $data->imageurl; },

   ),

And in your model,

public function getImageurl()
{
return \Yii::$app->request->BaseUrl.'/<path to image>/'.$this->logo;
}

Don't know this is the right way or not.But this works for me.

Use this:

   [
        'attribute' => 'image',
        'format' => 'html',    
        'value' => function ($data) {
            return Html::img(Yii::getAlias('@web').'/images/'. $data['image'],
                ['width' => '70px']);
        },
    ],

Yii 2 has built-in helper for building urls. You can bulld the url to image by path too (by passing second parameter $scheme).

So I recommend using this:

GridView:

use yii\helpers\Url;

[
    'format' => 'image',
    'value' => function ($model) {
        return $model->getImageUrl(); 
    },
],

Model:

public function getImageUrl()
{
    return Url::to('@web/path/to/logo/' . $this->logo, true);
}