equivalent of hook_field_widget_form_alter() for field formatters?

joachim

5/28/24, 9:44 AM

There's a hook hook_field_widget_form_alter() for altering a field widget, but I can't see anything equivalent for altering a field formatter's output.

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Clive

5/28/24, 7:59 PM

There isn't a direct equivalent, but `hook_preprocess_field` is often enough, depending on the formatter - what type(s) are you looking to intercept?

4uk4

5/29/24, 11:56 AM

If you want to alter the output of the field formatters as early as possible before any other processing and rendering starts, you can use [hook_entity_display_build_alter](https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Entity%21entity.api.php/function/hook_entity_display_build_alter/9). I've linked the D9 version because the example code fits the question better than the D10 version.

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