Dynagrid's pageSize configuration value not applied when using ArrayDataProvider

[antoniom]

The problem:

Suppose that you have the following code:

$query = new yii\db\Query;
$provider = new yii\data\ArrayDataProvider([
    'allModels' => $query->from('Employee')->all(),
    'pagination' => [
        'pageSize' => 10,
    ],
]);

echo \kartik\dynagrid\DynaGrid::widget([
    'columns' => ['EmployeeID', 'UserName'],
    'gridOptions'=>[
        'dataProvider'=>$provider,
        'panel'=>[
            'before'=>'{dynagrid}'
        ],
    ],
    'options' => ['id' => 'dynagrid-demo']
]);

As you can see the default pageSize set to ArrayDataProvider is 10. The GridView rendered is the following:

If someone clicks the Grid Configuration options and change the page size from 10 to 5, he would expect the items per page to be reduced at 5.

However the rows per page stay the same, i.e. the new configuration value is never applied.

Possible Solution:

After some research on the DynaGrid class I found that getAttributeLabel() method is forcing ArrayDataProvider to populate its models before the new Pagination object is applied, i.e.

$models = $provider->getModels();
if (($model = reset($models)) instanceof Model) {
    return $model->getAttributeLabel($attribute);
} else {
   return Inflector::camel2words($attribute);
}

A possible fix could be to invalidate the provider's contents by calling refresh(), i.e.

$models = $provider->getModels();
$provider->refresh();
if (($model = reset($models)) instanceof Model) {
    return $model->getAttributeLabel($attribute);
} else {
   return Inflector::camel2words($attribute);
}

I can provide a PR for the above fix, or you may come up with a more elegant solution.

[kartik-v]

Sure please submit a PR... and let know if it works fine on your tests.

[metola]

Hi, I have same problem and fix with $provider->refresh(); in getAttributeLabel function from dynagrid.php