Craft Related Entry Types
Craft 3 field type that allows more control over related entries. It extends the default Entries relationship field, but restricts the sections and entry types that can be related.
Source code is available on Github
This plugin requires Craft CMS 3.0.0-beta.23 or later.
Install from the Craft Plugin Store or using composer:
$ cd /path to project $ composer require unionco/craft-related-entry-types
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