oscarssanchez

Select Main Category

A very well-written, with good security like nonce verification.

Really well-written plugin

Choose a Primary Category for your posts.

migrad

<h4>Frontend</h4>
<p>This plugin allows you to display and collapse the tree of subcategories of categories that have at least one subcategory.</p>
<p>Features:</p>
<ul>
<li>Collaps and expand subcategories.</li>
<li>Remove links of all or some categories.</li>
<li>Hide one or several categories.</li>
<li>Change the images with plus and minus symbols for other images that represent collapsed or expanded categories, or css icons.</li>
<li>Order categories list by name and slug.</li>
<li>Hide icons for expand/collapse if you don’t want it.</li>
<li>Collapse all categories when show a post page or maintain expand the category related with the post.</li>
<li>Maintain expand all or some categories.</li>
</ul>
<h4>If your WordPress theme don’t use the widget categories list of WordPress, this plugin maybe don’t work.</h4>
<h4>Backend</h4>
<p>This plugin allows you can to limit the number of categories and subcategories selectables in the categories list block in edit post page.</p>
<p>Features:</p>
<ul>
<li>Limit the number of categories or subcategories selectables in the categories list block in edit post page.</li>
<li>Admin page for custom this limit for category level.</li>
</ul>


Collapsing Categories List

This plugin modifies the categories block to add new features such as collapse and expand categories and subcategories, order, etc.

Select Main Category vs Collapsing Categories List