Freemius

vegacorp

Jose Vega

<p><strong>This plugin works with Gutenberg (new editor). It works with the classic editor and the gutenberg editor.</strong></p>
<p>Require users to select a taxonomy term when publishing posts. For example, require the selection of a category or tag.</p>
<h4>It works with</h4>
<ul>
<li>All taxonomies , including post categories , post tags , product categories, product tags, and custom taxonomies.</li>
<li>All post types , including posts, pages, WooCommerce Products, Events, etc.</li>
</ul>
<h4>Use cases</h4>
<ul>
<li>Force users to select a category when publishing posts</li>
<li>Force users to select a tag when publishing posts</li>
<li>Force users to select a custom taxonomy term when publishing posts</li>
<li>Force users to select a category when publishing WooCommerce Products</li>
<li>Force users to select a tag when publishing WooCommerce Products</li>
<li>Force users to select a category or tag when publishing Events</li>
<li>Force users to select any Taxonomy Term when publishing any custom post type</li>
</ul>
<p>This plugin is completely free.</p>


WP Required Taxonomies – Categories and Tags Mandatory

Great for making categories required , so users can´t publish without selecting a category.

Great

Force users to select a taxonomy term when publishing posts. For example, make category or tags required

mitcho (Michael Yoshitaka Erlewine)

<p>This infrastructure plugin adds basic UI for single-valued taxonomies, i.e. a taxonomy with presents a <code>select</code> widget.</p>
<h4>Usage</h4>
<p>When registering your custom taxonomy, add the argument <code>single_value</code> set to <code>true</code> to get the single value UI. If a selection of this term is required, also add <code>required</code> set to <code>true</code>.</p>
<pre><code>register_taxonomy(
    'astrological_sign',
    array( 'person' ),
    array(
        'hierarchical' => false,
        'show_ui' => true,
        'required' => true,
        'single_value' => true
    )
);
</code></pre>
<p>Development of this plugin supported by <a href="http://globalshakespeares.org" rel="nofollow ugc">MIT Global Shakespeares</a>.</p>


Single Value Taxonomy UI

This infrastructure plugin adds basic UI for single-valued taxonomies, i.e. a taxonomy with presents a select widget.

WP Required Taxonomies – Categories and Tags Mandatory vs Single Value Taxonomy UI