33 lines
938 B
Markdown
33 lines
938 B
Markdown
---
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title: "Data attributes and feature flags"
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date: 2024-08-26 21:34:15
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tags: [Web Development, Software Development, Feature Flags, Drupal, CSS, PHP]
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---
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I recently used the [Feature Toggle module](https://www.drupal.org/project/feature_toggle) to set a data attribute which enabled some new styling for buttons.
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## The PHP code
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In the theme's .theme file:
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```php
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/**
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* Implements hook_preprocess_html().
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*/
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function mytheme_preprocess_html(array &$variables): void {
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$variables['attributes']['data-use-new-button-styles'] = \Drupal::service('feature_toggle.feature_status')->getStatus('use_the_new_button_styling');
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}
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```
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If the feature toggle is enabled, this adds a `data-use-new-button-styles=""` attribute to the `body` element.
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## The CSS code
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```css
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[data-use-new-button-styles] .btn-primary {
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background-color: red;
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}
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```
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I like using feature flags and was happy to find a way to use them for adding this new CSS.
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