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Ordering and fixes #16

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Ordering and fixes #16

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a6b3fc7
fix sql syntax, added ordering
adiosneo Jun 1, 2015
3b0cf08
fix of switching blogs when creating SQL, fix of switching blogs in t…
adiosneo Jun 1, 2015
f49f85a
add ordering example to readme
adiosneo Jun 1, 2015
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4 changes: 3 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,9 @@ $args = array(
'post_type' => 'post',
'sites' => array(
'sites__in' => array( 1, 2, 3, 5 )
)
),
'order_by' => 'title',
'order' => 'ASC'
);

$query = new WP_Query_Multisite( $args );
Expand Down
29 changes: 19 additions & 10 deletions index.php
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,8 @@ function __construct( $args = array() ) {
$this->args = $args;
$this->parse_multisite_args();
$this->add_filters();
$this->query($args);
$this->query($args);
$this->remove_filters();

}

function parse_multisite_args() {
Expand Down Expand Up @@ -56,33 +55,39 @@ function create_and_unionize_select_statements( $sql ) {
$posts_per_page = isset( $this->args['posts_per_page'] ) ? $this->args['posts_per_page'] : 10;
$s = ( isset( $this->args['s'] ) ) ? $this->args['s'] : false;

// order
if( !preg_match('/ORDER BY [A-Za-z0-9_]+\.([A-Za-z0-9_.]+) (ASC|DESC)/', $sql, $orderby) ){
$orderby = array( 1 => 'post_date', '2' => 'DESC' );
}

foreach ($this->sites_to_query as $key => $site_ID) :

switch_to_blog($site_ID);

$new_sql_select = str_replace($root_site_db_prefix, $wpdb->prefix, $sql);
$new_sql_select = preg_replace("/ LIMIT ([0-9]+), ".$posts_per_page."/", "", $new_sql_select);
$new_sql_select = str_replace("SQL_CALC_FOUND_ROWS ", "", $new_sql_select);
$new_sql_select = str_replace("# AS site_ID", "'$site_ID' AS site_ID", $new_sql_select);
$new_sql_select = preg_replace( '/ORDER BY ([A-Za-z0-9_.]+)/', "", $new_sql_select);
$new_sql_select = str_replace(array("DESC", "ASC"), "", $new_sql_select);
$new_sql_select = preg_replace( '/ORDER BY ([A-Za-z0-9_.]+) (ASC|DESC)/', "", $new_sql_select);

if( $s ){
$new_sql_select = str_replace("LIKE '%{$s}%' , wp_posts.post_date", "", $new_sql_select); //main site id
$new_sql_select = str_replace("LIKE '%{$s}%' , wp_{$site_ID}_posts.post_date", "", $new_sql_select); // all other sites
}

$new_sql_selects[] = $new_sql_select;

restore_current_blog();

endforeach;

if ( $posts_per_page > 0 ) {
$skip = ( $page * $posts_per_page ) - $posts_per_page;
$limit = "LIMIT $skip, $posts_per_page";
} else {
$limit = '';
}
$orderby = "tables.post_date DESC";
$new_sql = "SELECT SQL_CALC_FOUND_ROWS tables.* FROM ( " . implode(" UNION ", $new_sql_selects) . ") tables ORDER BY $orderby " . $limit;
$new_sql = "SELECT SQL_CALC_FOUND_ROWS tables.* FROM ( " . implode(" UNION ALL ", $new_sql_selects) . ") tables ORDER BY tables.$orderby[1] $orderby[2] " . $limit;

return $new_sql;
}
Expand All @@ -95,10 +100,14 @@ function add_site_ID_to_posts_fields( $sql ) {

function switch_to_blog_while_in_loop( $post ) {
global $blog_id;
if($post->site_ID && $blog_id != $post->site_ID )

if($post->site_ID && $blog_id == $post->site_ID)
return;

restore_current_blog();

if($post->site_ID && $blog_id != $post->site_ID)
switch_to_blog($post->site_ID);
else
restore_current_blog();
}

function restore_current_blog_after_loop() {
Expand Down