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Added additional random parameters #877

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merged 2 commits into from
Aug 8, 2014
Merged

Added additional random parameters #877

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a9f1f4f
Added additional random parameters
Jul 19, 2014
5319095
Added additional random parameters Fixes #867
Aug 7, 2014
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45 changes: 31 additions & 14 deletions modules/theme-tools/random-redirect.php
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Original file line number Diff line number Diff line change
Expand Up @@ -16,32 +16,49 @@ function jetpack_matt_random_redirect() {
if ( is_plugin_active( 'random-redirect/random-redirect.php' ) ) return;
}

// Acceptables URL formats: /[...]/?random=[post type], /?random, /&random, /&random=1
// Set default post type.
$post_type = get_post_type();

// Set default category type
if ( is_category() ) {
$category = get_the_category();
$random_cat_id = $category[0]->term_id;
}

// Set author name if we're on an author archive.
if ( is_author() ) {
$random_author_name = get_the_author_meta( 'user_login' );
$random_author_query = 'AND user_login = "' . $random_author_name . '"';
}

// Acceptable URL formats: /[...]/?random=[post type], /?random, /&random, /&random=1
if ( ! isset( $_GET['random'] ) && ! in_array( strtolower( $_SERVER['REQUEST_URI'] ), array( '/&random', '/&random=1' ) ) )
return;

// Ignore requests that include more than just the random parameter.
if ( ! empty( $_POST ) || ( isset( $_GET['random'] ) && count( $_GET ) > 1 ) )
// Ignore POST requests.
if ( ! empty( $_POST ) )
return;

// Persistent AppEngine abuse. ORDER BY RAND is expensive.
if ( strstr( $_SERVER['HTTP_USER_AGENT'], 'AppEngine-Google' ) )
wp_die( 'Please <a href="http://en.support.wordpress.com/contact/">contact support</a>' );

// /?random should always show a random post, even if the home page is a static page.
if ( is_front_page() ) {
$post_type = 'post';
}
else {
// Use the post type of the current page as the context for the random lookup.
$post_type = get_post_type();
// Set the category ID if the parameter is set.
if ( isset( $_GET['random_cat_id'] ) )
$random_cat_id = (int) $_GET['random_cat_id'];

if ( ! $post_type )
$post_type = 'post';
}
// Change the post type if the parameter is set.
if ( isset( $_GET['random_post_type'] ) && post_type_exists( $_GET['random_post_type'] ) )
$post_type = $_GET['random_post_type'];

global $wpdb;
$random_id = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type = %s AND post_password = '' AND post_status = 'publish' ORDER BY RAND() LIMIT 1", $post_type ) );

if ( isset( $random_cat_id ) ) {
$random_id = $wpdb->get_var( $wpdb->prepare( "SELECT DISTINCT ID FROM $wpdb->posts AS p INNER JOIN $wpdb->term_relationships AS tr ON (p.ID = tr.object_id AND tr.term_taxonomy_id = %s) INNER JOIN $wpdb->term_taxonomy AS tt ON(tr.term_taxonomy_id = tt.term_taxonomy_id AND taxonomy = 'category') WHERE p.post_type = %s AND post_password = '' AND post_status = 'publish' %s ORDER BY RAND() LIMIT 1", $random_cat_id, $post_type, $random_author_query ) );
} else {
$random_id = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_type = %s AND post_password = '' AND post_status = 'publish' %s ORDER BY RAND() LIMIT 1", $post_type, $random_author_query ) );
}

$permalink = get_permalink( $random_id );
wp_safe_redirect( $permalink );
exit;
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