Move daily emails into the blog page

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Oliver Davies 2025-08-21 00:28:10 +01:00
parent be69398931
commit 1b8441608f
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---
title: Writing custom PHPStan rules for Drupal projects
date: 2024-09-22
permalink: daily/2024/09/22/writing-custom-phpstan-rules-for-drupal-projects
tags:
- software-development
- drupal
- php
- phpstan
cta: ~
snippet: |
I wrote a custom PHPStan rule!
drupal_planet: true
---
Today, I watched a video recording of a session by Ondřej Mirtes - the creator of PHPStan - on writing custom rules for PHPStan.
After explaining how to write them, he showed some examples of custom rules - one of which was ensuring a `Person` class couldn't be created outside of a `PersonRepository` class.
This seemed straightforward so I thought about how I could do something similar within my [Drupal automated testing email course][0] to check my Drupal code.
Similar to Ondřej's example, I wondered if I could enforce that no post nodes should be created outside of the `PostBuilder` class by searching for any code like `Node::create(['type' => 'post'])`.
I was able to get a version working quickly and have [posted it as a gist][1].
I'm sure some improvements can be made, but it was a successful experiment and something I can see me using more in the future.
[0]: {{site.url}}/atdc
[1]: https://gist.github.com/opdavies/a2f9d92cf3b67db6a64b9fca4e4e6697