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Debugging Components: Info for PHP #2526

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Debugging Components: Info for PHP #2526

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5 changes: 5 additions & 0 deletions src/LiveComponent/doc/index.rst
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Expand Up @@ -3715,6 +3715,11 @@ Debugging Components
Need to list or debug some component issues.
The `Twig Component debug command`_ can help you.

To debug your PHP code, you can inject a `private LoggerInterface $logger` in your `__construct`.
Then you can use `$this->logger->debug('Message', ['var' => $var]);` and see the output in `var/log/dev.log`.
Comment on lines +3718 to +3719
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I'm not sure this is really needed, as it applies to any component / service in Symfony apps (and you can inject a Logger with a lot of other methods,) .

We could send the user towards the documentation pages on logging, but then it would not be really about debugging.

`dump` won't display anything anywhere (not even the debug toolbar).
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This is not true.

During the first render, dumps are shown either in the template or in the debug toolbar.

On following request they are shown on the profiler, like any AJAX request.

`dd` will display in your browser, but will also deadlock your component - you cannot dismiss it and continue working.
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This is the same thing in a webpage. dd means dump and die.


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