pantheon-systems/pantheon-mu-plugin

Pantheon mu-plugin for WordPress sites.

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Type:wordpress-muplugin

1.4.5 2024-07-19 18:54 UTC

README

Actively Maintained Test GitHub Release GitHub License

The Pantheon Must-Use Plugin has been designed to tailor the WordPress CMS experience for Pantheon's platform.

What does that mean? We're glad you asked!

Features

WebOps Workflow

Integrates WordPress with Pantheon Worklow. Encourages updating plugins and themes in the Development environment and using Pantheon's git-based upstream core updates. Alerts admins if an update is available but disables automatic updates (so those updates can be applied via the upstream).

Login

Customized login form. The login page links back to the Pantheon dashboard on dev, test and live environments that do not have a domain attached.

Edge Cache (Global CDN)

Facilitates communication between Pantheon's Edge Cache layer and WordPress. It allows you to set the default cache age, clear individual pages on demand, and it will automatically clear relevant urls when the site is updated. Authored by Matthew Boynes.

WordPress Multisite Support

Simplified multisite configuration. The WP_ALLOW_MULTISITE is automatically defined on WordPress Multisite-based upstreams. The Network Setup pages and notices have been customized for a Pantheon-specific WordPress multisite experience.

Maintenance Mode

Put your site into a maintenance mode. Prevent users from accessing your sites during major updates by enabling Maintenance Mode either in the WordPress admin or via WP-CLI.

Hooks

The Pantheon Must-Use Plugin provides the following hooks that can be used in your code:

Filters

pantheon_wp_login_text

Filter the text displayed on the login page next to the Return to Pantheon button.

Default Value: Log into your WordPress Site

Example:

add_filter( 'pantheon_wp_login_text', function() {
	return 'Log into MySite.';
} );

pantheon_cache_default_max_age

Filter the default cache max-age for the Pantheon Edge Cache.

Default Value: WEEK_IN_SECONDS (604800)

Example:

add_filter( 'pantheon_cache_default_max_age', function() {
    return 2 * WEEK_IN_SECONDS;
} );

pantheon_cache_do_maintenance_mode

Allows you to modify the maintenance mode behavior with more advanced conditionals.

Default Value: Boolean, depending on whether maintenance mode is enabled, user is not on the login page and the action is not happening in WP-CLI.

add_filter( 'pantheon_cache_do_maintenance_mode', function( $do_maintenance_mode ) {
	if ( $some_conditional_logic ) {
		return false;
	}
	return $do_maintenance_mode;
} );

pantheon_cache_allow_clear_all

Allows you to disable the ability to clear the entire cache from the WordPress admin. If set to false, this removes the "Clear Site Cache" section of the Pantheon Page Cache admin page.

Default Value: true

Example:

add_filter( 'pantheon_cache_allow_clear_all', '__return_false' );

pantheon_skip_cache_control

Allows you to disable the cache control headers that are sent by the Pantheon Page Cache plugin.

Default Value: false

Example:

add_filter( 'pantheon_skip_cache_control', '__return_true' );

Actions

pantheon_cache_settings_page_top

Runs at the top of the Pantheon Page Cache settings page.

Example:

add_action( 'pantheon_cache_settings_page_top', function() {
	echo '<h2>My Custom Heading</h2>';
} );

pantheon_cache_settings_page_bottom

Runs at the bottom of the Pantheon Page Cache settings page.

Example:

add_action( 'pantheon_cache_settings_page_bottom', function() {
	echo '<p>My Custom Footer</p>';
} );

Install With Composer

Built for Composer. While Pantheon automation ensures that the latest version of the MU plugin are pushed with every update to WordPress, the Composer-based project ensures that you can manage it alongside your other WordPress mu-plugins, plugins and themes in your composer.json.

composer require pantheon-systems/pantheon-mu-plugin

-- Maintained by Pantheon and built by the community.

Releases and Changelogs