Ticket #3773: dynamic-file-versioning#3773.patch

bp-themes/bp-default/functions.php

@@ -179 +179 @@
  * @see http://codex.buddypress.org/releases/1-5-developer-and-designer-information/
  * @since 1.5
  */
+
+// Cache busting dynamically
+function get_file_last_mod($filename) {
+ $filename = dirname(__FILE__) . '/_inc/css/' . $filename;
+        if( file_exists($filename) ){
+                $version =  date ("M d Y H:i:s.", filemtime($filename));
+        }else{
+                // manual cache busting
+                $version = 'V1.0';
+        }
+        return $version;
+}
+
 function bp_dtheme_enqueue_styles() {
 
         // Bail if in admin
@@ -189 +202 @@
         $version = '20110921';
 
         // Register our main stylesheet
-        wp_register_style( 'bp-default-main', get_template_directory_uri() . '/_inc/css/default.css', array(), $version );
+        wp_register_style( 'bp-default-main', get_template_directory_uri() . '/_inc/css/default.css', array(), get_file_last_mod('default.css') );
 
         // If the current theme is a child of bp-default, enqueue its stylesheet
         if ( is_child_theme() && 'bp-default' == get_template() ) {
@@ -201 +214 @@
 
         // Default CSS RTL
         if ( is_rtl() )
-                wp_enqueue_style( 'bp-default-main-rtl',  get_template_directory_uri() . '/_inc/css/default-rtl.css', array( 'bp-default-main' ), $version );
+                wp_enqueue_style( 'bp-default-main-rtl',  get_template_directory_uri() . '/_inc/css/default-rtl.css', array( 'bp-default-main' ), get_file_last_mod('default-rtl.css') );
 
         // Responsive layout
         if ( current_theme_supports( 'bp-default-responsive' ) ) {
-                wp_enqueue_style( 'bp-default-responsive', get_template_directory_uri() . '/_inc/css/responsive.css', array( 'bp-default-main' ), $version );
+                wp_enqueue_style( 'bp-default-responsive', get_template_directory_uri() . '/_inc/css/responsive.css', array( 'bp-default-main' ), get_file_last_mod('responsive.css') );
 
                 if ( is_rtl() )
-                        wp_enqueue_style( 'bp-default-responsive-rtl', get_template_directory_uri() . '/_inc/css/responsive-rtl.css', array( 'bp-default-responsive' ), $version );
+                        wp_enqueue_style( 'bp-default-responsive-rtl', get_template_directory_uri() . '/_inc/css/responsive-rtl.css', array( 'bp-default-responsive' ), get_file_last_mod('responsive-rtl.css') );
         }
 }
 add_action( 'wp_print_styles', 'bp_dtheme_enqueue_styles' );