environments/prod/common/config/main-local.php
<?php
return [
'components' => [
'db' => [
'class' => 'yii\db\Connection',
'dsn' => 'mysql:host=localhost;dbname=writesdown',
'username' => 'root',
'password' => '',
'charset' => 'utf8',
'tablePrefix' => 'wd_',
],
'mailer' => [
'class' => 'yii\swiftmailer\Mailer',
'viewPath' => '@common/mail',
],
],
];