execut / yii2-import

migrations/m161220_070554_addMimeTypeToFiles.php

<?php
namespace execut\import\migrations;
class m161220_070554_addMimeTypeToFiles extends \execut\yii\migration\Migration
{
    public function initInverter(\execut\yii\migration\Inverter $i)
    {
        $types = $i->table('import_settings')

The assignment to $types is dead and can be removed.

            ->addColumn('is_check_mime_type', $this->boolean())
            ->alterColumnSetDefault('is_check_mime_type', 'true')
            ->update([
                'is_check_mime_type' => true,
            ])
            ->alterColumnSetNotNull('is_check_mime_type');
    }
}