Commit c85c17d4 authored by Erick Hitter's avatar Erick Hitter

Support cache clearing from post list tables.

Fixes #5.
parent 504df727
......@@ -64,6 +64,8 @@ class Redis_Page_Cache {
// Manual invalidations
add_action( 'admin_bar_menu', array( $this, 'admin_bar_menu' ), 999 );
add_action( 'post_row_actions', array( $this, 'quick_edit' ), 999, 2 );
add_action( 'page_row_actions', array( $this, 'quick_edit' ), 999, 2 );
add_action( 'wp_ajax_redis_page_cache_purge', array( $this, 'ajax_purge' ) );
}
......@@ -142,8 +144,8 @@ class Redis_Page_Cache {
* @return null
*/
public function register_options() {
register_setting( $this->ns, 'redis-page-cache-seconds', 'absint' );
register_setting( $this->ns, 'redis-page-cache-unlimited', 'absint' );
register_setting( $this->ns, $this->ns . '-seconds', 'absint' );
register_setting( $this->ns, $this->ns . '-unlimited', 'absint' );
}
/**
......@@ -181,7 +183,7 @@ class Redis_Page_Cache {
<tr>
<th scope="row"><label for="duration-seconds"><?php _e( 'Duration of Caching in Seconds:', 'redis-page-cache' ); ?></label></td>
<td>
<input type="text" name="redis-page-cache-seconds" id="duration-seconds" size="15" value="<?php echo (int) get_option( 'redis-page-cache-seconds', 43200 ); ?>" />
<input type="text" name="<?php echo esc_attr( $this->ns ); ?>-seconds" id="duration-seconds" size="15" value="<?php echo (int) get_option( $this->ns . '-seconds', 43200 ); ?>" />
<p class="description"><?php _e( 'How many seconds would you like to cache individual pages? <strong>Recommended 12 hours or 43200 seconds</strong>.', 'redis-page-cache' ); ?></p>
</td>
......@@ -189,7 +191,7 @@ class Redis_Page_Cache {
<tr>
<th scope="row"><label for="unlimited-cache"><?php _e( 'Cache Without Expiration?', 'redis-page-cache' ); ?></label></th>
<td>
<input type="checkbox" name="redis-page-cache-unlimited" id="unlimited-cache" value="1" <?php checked( true, (bool) get_option( 'redis-page-cache-unlimited', false ) ); ?>/>
<input type="checkbox" name="<?php echo esc_attr( $this->ns ); ?>-unlimited" id="unlimited-cache" value="1" <?php checked( true, (bool) get_option( $this->ns . '-unlimited', false ) ); ?>/>
<p class="description"><?php _e( 'If this option is set, the cache never expire. This option overides the setting <em>Duration of Caching in Seconds</em>.', 'redis-page-cache' ); ?></p>
</td>
......@@ -219,8 +221,9 @@ class Redis_Page_Cache {
}
/**
* Add a purge option to the admin bar for those with proper capabilities
* Add a single-page purge option to the admin bar for those with proper capabilities
*
* @action admin_bar_menu
* @return null
*/
public function admin_bar_menu() {
......@@ -237,30 +240,64 @@ class Redis_Page_Cache {
}
// What are we trying to clear?
$page_url = set_url_scheme( esc_url( $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ) );
$flush_url = add_query_arg( array(
'action' => 'redis_page_cache_purge',
'nonce' => wp_create_nonce( $page_url ),
'url' => urlencode( $page_url ),
), admin_url( 'admin-ajax.php' ) );
$url = set_url_scheme( esc_url( $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ) );
$wp_admin_bar->add_menu( array(
'id' => 'redis-page-cache',
'id' => $this->ns,
'parent' => false,
'title' => __( 'Clear Page Cache', 'redis-page-cache' ),
'href' => $flush_url,
'href' => $this->get_ajax_purge_url( $url ),
) );
}
/**
* Add a purge link to the Quick Edit actions in post tables
*
* @param array $actions
* @param object $post
* @action post_row_actions
* @action page_row_actions
* @return array
*/
public function quick_edit( $actions, $post ) {
$actions[ $this->ns ] = '<a href="' . esc_url( $this->get_ajax_purge_url( get_permalink( $post->ID ) ) ) . '">' . __( 'Clear cache', 'redis-page-cache' ) . '</a>';
return $actions;
}
/**
* Build URL for Ajax purge requests
*
* @param string $url
* @return string
*/
private function get_ajax_purge_url( $url ) {
$url = remove_query_arg( $this->ns . '-purge', $url );
$url = add_query_arg( array(
'action' => 'redis_page_cache_purge',
'nonce' => wp_create_nonce( $url ),
'url' => urlencode( $url ),
), admin_url( 'admin-ajax.php' ) );
return $url;
}
/**
* Purge a page from cache via an Ajax request
*
* @action wp_ajax_redis_page_cache_purge
* @return null
*/
public function ajax_purge() {
$url = esc_url_raw( urldecode( $_GET['url'] ) );
$redirect = add_query_arg( 'redis-page-cache-purge', 'failed', $url );
$url = esc_url_raw( urldecode( $_GET['url'] ) );
if ( isset( $_SERVER['HTTP_REFERER'] ) ) {
$redirect = $_SERVER['HTTP_REFERER'];
} else {
$redirect = $url;
}
$redirect = add_query_arg( $this->ns . '-purge', 'failed', $redirect );
// Check nonce and referrer
if ( ! check_ajax_referer( $url, 'nonce', false ) ) {
......@@ -275,7 +312,7 @@ class Redis_Page_Cache {
// Checks passed, so we purge and redirect with success noted in the query string
$this->purge( $url );
$redirect = add_query_arg( 'redis-page-cache-purge', 'success', $redirect );
$redirect = add_query_arg( $this->ns . '-purge', 'success', $redirect );
wp_safe_redirect( $redirect, 302 );
}
}
......
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