Yii2 - Log files (app.log) and how to access them?

Question

I have a question about logs in Yii2. I want to

1.) Access log file (both basic/advanced application)
2.) Parse them using by using regular expressions (separate each part of the log, i partly know, how to do it)
3.) Display them by using widget (in widget i want to specify, what i want 2 show )

Right now, i am struggling, which method to use, when i want to handle those logs. I know they are in : app\frontend|backend|console\runtime\logs\app.log, but since i am still Yii2 newbie, i don`t really know, how to perform actions like that. Every answer will be appreciated ! Thank you

Answer 1

You can have logs where ever you want with yii2.

You can define your own logs in the config file depending of the application setup you are using.

http://www.yiiframework.com/doc-2.0/yii-log-target.html

Check the config file under the web section and you will see something like that:

    // Logging
    'log' => [
        'targets' => [
            // writes to php-fpm output stream
            [
                'class' => 'codemix\streamlog\Target',
                'url' => 'php://stdout',
                'levels' => ['info', 'trace'],
                'logVars' => [],
                'enabled' => YII_DEBUG,
            ],

You can add new ragets like that:

                [
                'class' => 'yii\log\FileTarget',
                'levels' => ['info', 'trace', 'error', 'warning'],
                'categories' => ['mycategory'],
                'logVars' => [],
                'logFile' => '@runtime/logs/myfolder/myfile.log',
            ],

To add lines to this logs you will use something like that:

\Yii::info("hi there", 'mycategory');

About how to get this path within your code it is as simple as creating an alias in your config file:

http://www.yiiframework.com/doc-2.0/guide-concept-aliases.html

Yii::setAlias('@runtime', dirname(__DIR__) . '/../../runtime/logs/myfolder');

The rest it is mainly php functions like read the file

http://www.w3schools.com/php/php_file_open.asp

then search about models, passing data from the controller to the view, etc