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Ignore:
Timestamp:
10/05/2015 03:05:26 PM (5 years ago)
Author:
boonebgorges
Message:

Use wp_installing() instead of WP_INSTALLING constant.

The WP_INSTALLING constant is a flag that WordPress sets in a number of
places, telling the system that options should be fetched directly from the
database instead of from the cache, that WP should not ping wordpress.org for
updates, that the normal "not installed" checks should be bypassed, and so on.

A constant is generally necessary for this purpose, because the flag is
typically set before the WP bootstrap, meaning that WP functions are not yet
available. However, it is possible - notably, during wpmu_create_blog() -
for the "installing" flag to be set after WP has already loaded. In these
cases, WP_INSTALLING would be set for the remainder of the process, since
there's no way to change a constant once it's defined. This, in turn, polluted
later function calls that ought to have been outside the scope of site
creation, particularly the non-caching of option data. The problem was
particularly evident in the case of the automated tests, where WP_INSTALLING
was set the first time a site was created, and remained set for the rest of the
suite.

The new wp_installing() function allows developers to fetch the current
installation status (when called without any arguments) or to set the
installation status (when called with a boolean true or false). Use of
the WP_INSTALLING constant is still supported; wp_installing() will default
to true if the constant is defined during the bootstrap.

Props boonebgorges, jeremyfelt.
See #31130.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/src/wp-includes/load.php

    r34462 r34828  
    166166 */
    167167function wp_maintenance() {
    168     if ( !file_exists( ABSPATH . '.maintenance' ) || defined( 'WP_INSTALLING' ) )
     168    if ( ! file_exists( ABSPATH . '.maintenance' ) || wp_installing() )
    169169        return;
    170170
     
    476476function wp_not_installed() {
    477477    if ( is_multisite() ) {
    478         if ( ! is_blog_installed() && ! defined( 'WP_INSTALLING' ) ) {
     478        if ( ! is_blog_installed() && ! wp_installing() ) {
    479479            nocache_headers();
    480480
    481481            wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) );
    482482        }
    483     } elseif ( ! is_blog_installed() && ! defined( 'WP_INSTALLING' ) ) {
     483    } elseif ( ! is_blog_installed() && ! wp_installing() ) {
    484484        nocache_headers();
    485485
     
    540540    $plugins = array();
    541541    $active_plugins = (array) get_option( 'active_plugins', array() );
    542     if ( empty( $active_plugins ) || defined( 'WP_INSTALLING' ) )
     542    if ( empty( $active_plugins ) || wp_installing() )
    543543        return $plugins;
    544544
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