Configuration
The logging facilities for your application are configured in the
Illuminate\Foundation\Bootstrap\ConfigureLogging
bootstrapper class. This class utilizes the log
configuration option from your config/app.php configuration
file.
By default, the logger is configured to use daily log files; however, you may customize this behavior as needed. Since Laravel uses the popular Monolog logging library, you can take advantage of the variety of handlers that Monolog offers.
For example, if you wish to use a single log file instead of daily
files, you can make the following change to your
config/app.php configuration file:
'log' => 'single'Out of the box, Laravel supported single,
daily, syslog and errorlog
logging modes. However, you are free to customize the logging for your
application as you wish by overriding the ConfigureLogging
bootstrapper class.
Error Detail
The amount of error detail your application displays through the
browser is controlled by the app.debug configuration option
in your config/app.php configuration file. By default, this
configuration option is set to respect the APP_DEBUG
environment variable, which is stored in your .env
file.
For local development, you should set the APP_DEBUG
environment variable to true. In your production
environment, this value should always be
false.
Handling Errors
All exceptions are handled by the App\Exceptions\Handler
class. This class contains two methods: report and
render.
The report method is used to log exceptions or send them
to an external service like BugSnag.
By default, the report method simply passes the exception
to the base implementation on the parent class where the exception is
logged. However, you are free to log exceptions however you wish. If you
need to report different types of exceptions in different ways, you may
use the PHP instanceof comparison operator:
/**
* Report or log an exception.
*
* This is a great spot to send exceptions to Sentry, Bugsnag, etc.
*
* @param \Exception $e
* @return void
*/
public function report(Exception $e)
{
if ($e instanceof CustomException)
{
//
}
return parent::report($e);
}The render method is responsible for converting the
exception into an HTTP response that should be sent back to the browser.
By default, the exception is passed to the base class which generates a
response for you. However, you are free to check the exception type or
return your own custom response.
The dontReport property of the exception handler
contains an array of exception types that will not be logged. By
default, exceptions resulting from 404 errors are not written to your
log files. You may add other exception types to this array as
needed.
HTTP Exceptions
Some exceptions describe HTTP error codes from the server. For example, this may be a "page not found" error (404), an "unauthorized error" (401) or even a developer generated 500 error. In order to return such a response, use the following:
abort(404);Optionally, you may provide a response:
abort(403, 'Unauthorized action.');This method may be used at any time during the request's lifecycle.
Custom 404 Error Page
To return a custom view for all 404 errors, create a
resources/views/errors/404.blade.php file. This view will
be served on all 404 errors generated by your application.
Logging
The Laravel logging facilities provide a simple layer on top of the
powerful Monolog
library. By default, Laravel is configured to create daily log files for
your application which are stored in the storage/logs
directory. You may write information to the log like so:
Log::info('This is some useful information.');
Log::warning('Something could be going wrong.');
Log::error('Something is really going wrong.');The logger provides the seven logging levels defined in RFC 5424: debug, info, notice, warning, error, critical, and alert.
An array of contextual data may also be passed to the log methods:
Log::info('Log message', ['context' => 'Other helpful information']);Monolog has a variety of additional handlers you may use for logging. If needed, you may access the underlying Monolog instance being used by Laravel:
$monolog = Log::getMonolog();You may also register an event to catch all messages passed to the log:
Registering A Log Event Listener
Log::listen(function($level, $message, $context)
{
//
});