dFactory

<p><a href="http://www.dfactory.eu/plugins/restrict-widgets/" rel="nofollow ugc">Restrict Widgets</a> is all in one solution for widget management in WordPress. It lets you easily control the pages that each widget will appear on and avoid creating multiple sidebars and duplicating widgets. You can also set who can manage widgets, which sidebars and widgets will be available to selected users, which widget options will be available and how it will be displayed.</p>
<p>By default, Hide widget on selected is enabled with no options selected, so all current widgets will continue to display on all pages.</p>
<p>For more information, check out plugin page at <a href="http://www.dfactory.eu/" rel="nofollow ugc">dFactory</a> or plugin <a href="http://www.dfactory.eu/support/forum/restrict-widgets/" rel="nofollow ugc">support forum</a>.</p>
<h4>Features include:</h4>
<ul>
<li>Hide or display each widget on selected pages, posts, categories, custom taxonomies, custom post types, single posts, archives, special pages, for logged in or logged out users, current language, mobile device and so on</li>
<li>Select which user roles are restricted to manage widgets</li>
<li>Select which sidebars will be restricted to admins only</li>
<li>Select which widgets will be restricted to admins only</li>
<li>Select which widget options will be restricted to admins only</li>
<li>Choose to display or not widget options as groups</li>
<li>Option to modify the is_active_sidebar() function to use Restrict Widgets display settings</li>
<li>Multisite compatible</li>
<li>WPML compatible</li>
<li>Polylang compatible</li>
<li>.pot file for translations included</li>
</ul>
<h4>Translations:</h4>
<ul>
<li>Chinese – by Changmeng Hu</li>
<li>Czech – by Martin Kucera</li>
<li>German – by <a href="http://apart-webdesign.de/" rel="nofollow ugc">Angelika Reisiger</a></li>
<li>Hebrew – by <a href="http://atar4u.com/" rel="nofollow ugc">Ahrale Shrem</a></li>
<li>Italian – by <a href="http://sododesign.it/" rel="nofollow ugc">Davide Pante</a></li>
<li>Polish – by Bartosz Arendt</li>
</ul>


Restrict Widgets

Works with SiteOrigin pagebuilder, quick and easy to use. 

Awesome!

All in one widgets and sidebars management in WordPress. Allows you to hide or display widgets on specified pages and restrict access for users.

Tahir Yasin

<p>This plugin lists all JavaScripts and Style sheets with a control field that lets you control CSS & JavaScript files to include only on the pages where you actually need them. The text field lets you use WP’s <a href="https://codex.wordpress.org/Conditional_Tags" rel="nofollow ugc">Conditional Tags</a>, or any general PHP code.</p>
<p>NOTE: The script logic you introduce is evaluated directly. Anyone who has permission to manage options will have the right to add any code, including malicious and possibly destructive code. There is an optional filter ‘script_logic_eval_override’ which you can use to bypass the EVAL with your own code if needed. (See <a href="other_notes/" rel="nofollow ugc">Other Notes</a>).</p>
<h3>Writing Logic Code</h3>
<p>The text in the ‘Logic’ field can be full PHP code and should return ‘true’ when you need the script to load. If there is no ‘return’ in the text, an implicit ‘return’ is added to the start and a ‘;’ is added on the end. (This is just to make single statements like is_home() more convenient.)</p>
<h4>The Basics</h4>
<p>Make good use of <a href="https://codex.wordpress.org/Conditional_Tags" rel="nofollow ugc">WP’s own conditional tags</a>. You can vary and combine code using:</p>
<ul>
<li><code>!</code> (NOT) to <strong>reverse</strong> the logic, eg <code>!is_home()</code> is TRUE when this is NOT the home page.</li>
<li><code>||</code> (OR) to <strong>combine</strong> conditions. <code>X OR Y</code> is TRUE when either X is true or Y is true.</li>
<li><code>&&</code> (AND) to make conditions <strong>more specific</strong>. <code>X AND Y</code> is TRUE when both X is true and Y is true.</li>
</ul>
<p>There are lots of great code examples on the WP forums, and on WP sites across the net. But the WP Codex is also full of good examples to adapt, such as <a href="https://codex.wordpress.org/Template_Tags/in_category#Testing_if_a_post_is_in_a_descendant_category" rel="nofollow ugc">Test if post is in a descendent category</a>.</p>
<h4>Examples</h4>
<ul>
<li><code>is_home()</code> — just the main blog page</li>
<li><code>!is_page('about')</code> — everywhere EXCEPT this specific WP ‘page’</li>
<li><code>!is_user_logged_in()</code> — shown when a user is not logged in</li>
<li><code>is_category(array(5,9,10,11))</code> — category page of one of the given category IDs</li>
<li><code>is_single() && in_category('baked-goods')</code> — single post that’s in the category with this slug</li>
<li><code>strpos($_SERVER['HTTP_REFERER'], "google.com")!=false</code> — script to load when clicked through from a google search</li>
<li><code>is_category() && in_array($cat, get_term_children( 5, 'category'))</code> — category page that’s a descendent of category 5</li>
<li><code>global $post; return (in_array(77,get_post_ancestors($post)));</code> — WP page that is a child of page 77</li>
<li><code>global $post; return (is_page('home') || ($post->post_parent=="13"));</code> — home page OR the page that’s a child of page 13</li>
</ul>
<p>Note the extra ‘;’ on the end where there is an explicit ‘return’.</p>
<h3>The ‘script_logic_eval_override’ filter</h3>
<p>Before the Script Logic code is evaluated for each script, the text of the Script Logic code is passed through this filter. If the filter returns a BOOLEAN result, this is used instead to determine if the script should load. Return TRUE to load.</p>


Script Logic

Script Logic lets you control on which pages scripts and style sheets load using WP's conditional tags.

Restrict Widgets vs Script Logic