Yi2 Rules extensions not working correctly?

Question

PHP

$model = DynamicModel::validateData(compact('files', 'file', 'userId'),
        [
            [['userId'], 'integer', 'min' => 1],
            [['file'], 'file', 'extensions' => 'xls, xlsx', 'maxSize' => 50 * 1024 * 1024],
            [['files'], 'each', 'rule' => ['file', 'extensions' => 'xls, xlsx', 'maxSize' => 50 * 1024 * 1024]],
        ]);

There is such a code.
When loading a file with the xlsx extension, everything goes fine, I try to load xls - I get the following error:

Разрешена загрузка файлов только со следующими расширениями: xls, xlsx.

What could be the problem? Maybe I wrote the rules wrong?

Answer 1

As IvanMogilev wrote in the code, the problem was in checkExtensionByMimeType.
That file with the xls extension that I loaded was going through php as an upload. And apparently the library that is used does not prescribe Mime Type, and in Yii this check is enabled by default: https://www.yiiframework.com/doc/api/2.0/yii-valid...

Answer 2

Extensions must be specified as an array.