Multisite: add new sites_pre_query and networks_pre_query filters to short circuit WP_Site_Query and WP_Network_Query queries.

Similar to the `posts_pre_query` filter for WP_Query added in #36687. These filters lets you short circuit the queries to return your own results.

Add a new filter `sites_pre_query` - which returns null by default. Return a non-null value to bypass WordPress's default `get_sites` queries.

Developers should note that filtering functions that require pagination information are encouraged to set the `found_sites` property of the `WP_Site_Query` object, passed to the filter by reference. If `WP_Site_Query` does not perform a database query, it will not have enough information to generate these values itself.

Add a new filter `networks_pre_query` - which returns null by default. Return a non-null value to bypass WordPress's default `get_networks` queries.

Developers should note that filtering functions that require pagination information are encouraged to set the `found_networks` property of the `WP_Network_Query` object, passed to the filter by reference. If `WP_Network_Query` does not perform a database query, it will not have enough information to generate these values itself.

Props spacedmonkey.
Fixes #45749.



git-svn-id: https://develop.svn.wordpress.org/trunk@44983 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Adam Silverstein 2019-03-22 17:25:38 +00:00
parent 42547da41d
commit 7793e670b8
4 changed files with 151 additions and 42 deletions

View File

@ -197,6 +197,24 @@ class WP_Network_Query {
*/
do_action_ref_array( 'pre_get_networks', array( &$this ) );
$network_ids = null;
/**
* Filter the sites array before the query takes place.
*
* Return a non-null value to bypass WordPress's default site queries.
*
*
* @since 5.2.0
*
* @param array|null $site_ids Return an array of site data to short-circuit WP's site query,
* or null to allow WP to run its normal queries.
* @param WP_Network_Query $this The WP_Network_Query instance, passed by reference.
*/
$network_ids = apply_filters_ref_array( 'networks_pre_query', array( $network_ids, &$this ) );
if ( null === $network_ids ) {
// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
@ -224,6 +242,7 @@ class WP_Network_Query {
$network_ids = $cache_value['network_ids'];
$this->found_networks = $cache_value['found_networks'];
}
}
if ( $this->found_networks && $this->query_vars['number'] ) {
$this->max_num_pages = ceil( $this->found_networks / $this->query_vars['number'] );

View File

@ -288,6 +288,24 @@ class WP_Site_Query {
$this->meta_query_clauses = $this->meta_query->get_sql( 'blog', $wpdb->blogs, 'blog_id', $this );
}
$site_ids = null;
/**
* Filter the sites array before the query takes place.
*
* Return a non-null value to bypass WordPress's default site queries.
*
*
* @since 5.2.0
*
* @param array|null $site_ids Return an array of site data to short-circuit WP's site query,
* or null to allow WP to run its normal queries.
* @param WP_Site_Query $this The WP_Site_Query instance, passed by reference.
*/
$site_ids = apply_filters_ref_array( 'sites_pre_query', array( $site_ids, &$this ) );
if ( null === $site_ids ) {
// $args can include anything. Only use the args defined in the query_var_defaults to compute the key.
$_args = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) );
@ -315,6 +333,7 @@ class WP_Site_Query {
$site_ids = $cache_value['site_ids'];
$this->found_sites = $cache_value['found_sites'];
}
}
if ( $this->found_sites && $this->query_vars['number'] ) {
$this->max_num_pages = ceil( $this->found_sites / $this->query_vars['number'] );

View File

@ -522,6 +522,41 @@ if ( is_multisite() ) :
);
$this->assertEquals( $number_of_queries + 1, $wpdb->num_queries );
}
/**
* @ticket 45749
*/
public function test_networks_pre_query_filter_should_bypass_database_query() {
global $wpdb;
add_filter( 'networks_pre_query', array( __CLASS__, 'filter_networks_pre_query' ), 10, 2 );
$num_queries = $wpdb->num_queries;
$q = new WP_Network_Query();
$results = $q->query(
array(
'fields' => 'ids',
)
);
remove_filter( 'networks_pre_query', array( __CLASS__, 'filter_networks_pre_query' ), 10, 2 );
// Make sure no queries were executed.
$this->assertSame( $num_queries, $wpdb->num_queries );
// We manually inserted a non-existing site and overrode the results with it.
$this->assertSame( array( 555 ), $q->networks );
// Make sure manually setting total_users doesn't get overwritten.
$this->assertEquals( 1, $q->found_networks );
}
public static function filter_networks_pre_query( $networks, $query ) {
$query->found_networks = 1;
return array( 555 );
}
}
endif;

View File

@ -911,6 +911,42 @@ if ( is_multisite() ) :
}
}
/**
* @ticket 45749
*/
public function test_sites_pre_query_filter_should_bypass_database_query() {
global $wpdb;
add_filter( 'sites_pre_query', array( __CLASS__, 'filter_sites_pre_query' ), 10, 2 );
$num_queries = $wpdb->num_queries;
$q = new WP_Site_Query();
$results = $q->query(
array(
'fields' => 'ids',
)
);
remove_filter( 'sites_pre_query', array( __CLASS__, 'filter_sites_pre_query' ), 10, 2 );
// Make sure no queries were executed.
$this->assertSame( $num_queries, $wpdb->num_queries );
// We manually inserted a non-existing site and overrode the results with it.
$this->assertSame( array( 555 ), $q->sites );
// Make sure manually setting total_users doesn't get overwritten.
$this->assertEquals( 1, $q->found_sites );
}
public static function filter_sites_pre_query( $sites, $query ) {
$query->found_sites = 1;
return array( 555 );
}
public function data_wp_site_query_meta_query() {
return array(
array(