yii2 gridview column headers not translated - php

Question

Currently a problem with getting the headers translated when using the GridView Widget, supplied by Yii themselves.
The page and item indicator and all other features of the page are being translated, and when I build this table without the GridView Widget everything is fine. However now after doing a few tables manually I would like to see if someone knows a solution for this problem.
Just to sum things up:
i18N is working properly on the entire website
Translation is not working on GridView Widget
Translation is working on for example ActiveForm
All headers are added to the correct Message file.
And Here the corresponding code:
//Controller-Action
$releaseQuery = new Query();
$releaseQuery->
select("`amount` AS 'Amount',
`created` AS 'Created',
`user`.`email` AS 'User',
`cinema`.`name` AS 'Cinema',
`date` AS 'Date'")->
from("`release`")->
join('left join', '`user`', '`release`.`created_by` = `user`.`id`')->
join('left join', '`cinema`', '`release`.`cinemaid` = `cinema`.`id`');
$dataProvider = new ActiveDataProvider([
'query' => $releaseQuery,
'pagination' => [
'pageSize' => 50,
],
]);
// View
<?= GridView::widget([
'dataProvider' => $dataProvider,
'columns' => [
'Amount:currency',
'Created',
'User',
'Cinema',
'Date',
],
]) ?>

Answer 1

Check if in your model you have the i18n in attributeLabel
like this sample (if you don'have you must add or add them in label parameter for gridview)
public function attributeLabels()
{
return [
'name' => Yii::t('app', 'Name'),
'type' => Yii::t('app', 'Type'),
'description' => Yii::t('app', 'Description'),
'rule_name' => Yii::t('app', 'Rule Name'),
'data' => Yii::t('app', 'Data'),
'created_at' => Yii::t('app', 'Created At'),
'updated_at' => Yii::t('app', 'Updated At'),
];
}
if you generate the model with gii remenber to set i18n checkbox
If you use new column name in query these became attribute in gridview e you must manager the relative label with proper translation function
<?= GridView::widget([
'dataProvider' => $dataProvider,
'columns' => [
['attribute' => 'Amount',
'label' => Yii::t('app', 'Amount'),],
.......
],
]) ?>