In the original function introduced in [41380], and subsequently [41861], only the network ID was passed to the new `pre_get_main_site_id` filter. In order to make give quick access to other network properties, it was decided to pass the whole object instead. The changeset includes an additional test.
Fixes#29684.
git-svn-id: https://develop.svn.wordpress.org/trunk@42043 602fd350-edb4-49c9-b593-d223f7449a82
When the `WP_Network::$blog_id` property is set manually, for example in the multisite bootstrap process, `get_main_site_id()` should use that value instead of running its own logic. The main logic for the function was therefore moved into the internal `WP_Network::get_main_site_id()` method, which is now being accessed by the function through the magic property handling for `WP_Network::$blog_id` (and its equivalent `WP_Network::$site_id`).
Props spacedmonkey, jeremyfelt.
Fixes#41936.
git-svn-id: https://develop.svn.wordpress.org/trunk@41861 602fd350-edb4-49c9-b593-d223f7449a82
This function can be used to easily get the main site ID of a given network via the optional `$network_id` parameter, which defaults to the current network. The existing `is_main_site()` now uses the new function internally and now accepts an optional `$network_id` parameter as well.
The main purpose of the new function at this point is to ensure that the `WP_Network::$blog_id` property is always set. Magic getters in the class have been adjusted to auto-fill the property when it is accessed and empty. Furthermore the function encapsulates logic that was previously part of `ms_load_current_site_and_network()` and has been replaced with a call to the function now.
Props spacedmonkey, jeremyfelt, johnjamesjacoby, flixos90.
Fixes#29684.
git-svn-id: https://develop.svn.wordpress.org/trunk@41380 602fd350-edb4-49c9-b593-d223f7449a82
