[5.x] Matrix field conditional display for entry types

[turnstylerj]

One of the features I'm missing from Neo with the new Matrix is the ability to conditionally display Entry Types. It's common to have a handful of "core" Entry Types and a few that are only used on one or two entries; we typically give the author a default set of Entry Types for simplicity on day-to-day entry creation, then an advanced option that enables the one-off/all Entry Types.

[BigglesZX]

I've also just found a use-case for this. Interested to hear if this is feasible! Thanks.

[wsydney76]

For now, this can be done via a custom module, add something like this to the init() method:

use craft\fields\Matrix;
use craft\events\DefineEntryTypesForFieldEvent;

...

Event::on(
    Matrix::class,
    Matrix::EVENT_DEFINE_ENTRY_TYPES,
    function(DefineEntryTypesForFieldEvent $event) {
        $element = $event->element;

        if (
            $element instanceof Entry &&                  // Check if the element is an entry
            $element->section &&                          // Check if the entry is not a nested entry
            $event->sender->handle === 'bodyContent' &&   // Check if the field is the bodyContent field
            $element->section->handle === 'blog'          // Check if the entry is in the blog section
        ) {
            foreach ($event->entryTypes as $i => $entryType) {
                if (in_array(
                    $entryType->handle,
                    [
                        'hero',
                        'twoColumnsText',
                        'features'
                    ])) {
                    unset($event->entryTypes[$i]);
                }
            }
        }
    });

PS: This is just a quick-and-dirty thing for a hobby project, so in real life it may need some kind of configuration instead of hard-coding the rules.

[BigglesZX]

This is very helpful, thank you.