10h30/display-featured-image-genesis
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Refactor get_image_id

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Sets a fallback if original image has number pattern like WP's resized
images in the URL. Mad props to @hellofromtonya to abstract the SQL
query and make it more efficient.
This commit is contained in:
Robin Cornett
2015-04-29 15:02:35 -04:00
parent 6787b96354
commit 580869641f
1 changed files with 35 additions and 7 deletions
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includes/class-displayfeaturedimagegenesis-common.php
+35 -7
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@@ -224,11 +224,11 @@ class Display_Featured_Image_Genesis_Common {
* @link http://philipnewcomer.net/2012/11/get-the-attachment-id-from-an-image-url-in-wordpress/
*/
public static function get_image_id( $attachment_url = '' ) {
global $wpdb;
$attachment_id = false;
// as of 2.2.0, if a (new) image id is passed to the function, return it as is.
if ( is_int( $attachment_url ) ) {
if ( is_numeric( $attachment_url ) ) {
return $attachment_url;
}
@@ -243,20 +243,48 @@ class Display_Featured_Image_Genesis_Common {
// Make sure the upload path base directory exists in the attachment URL, to verify that we're working with a media library image
if ( false !== strpos( $attachment_url, $upload_dir_paths['baseurl'] ) ) {
// If this is the URL of an auto-generated thumbnail, get the URL of the original image
$attachment_url = preg_replace( '/-\d+x\d+(?=\.(jpg|jpeg|png|gif)$)/i', '', $attachment_url );
// Remove the upload path base directory from the attachment URL
$attachment_url = str_replace( $upload_dir_paths['baseurl'] . '/', '', $attachment_url );
$attachment_url = str_replace( trailingslashit( $upload_dir_paths['baseurl'] ), '', $attachment_url );
// If this is the URL of an auto-generated thumbnail, get the URL of the original image
$url_stripped = preg_replace( '/-\d+x\d+(?=\.(jpg|jpeg|png|gif)$)/i', '', $attachment_url );
// Finally, run a custom database query to get the attachment ID from the modified attachment URL
$attachment_id = $wpdb->get_var( $wpdb->prepare( "SELECT wposts.ID FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_key = '_wp_attached_file' AND wpostmeta.meta_value = '%s' AND wposts.post_type = 'attachment'", $attachment_url ) );
$attachment_id = self::fetch_image_id_query( $url_stripped, $attachment_url );
}
return $attachment_id;
}
/**
* Fetch image ID from database
* @param var $url_stripped image url without WP resize string (eg 150x150)
* @param var $attachment_url image url
* @return int (image id) image ID, or false
*
* @since 2.2.0
*
* @author hellofromtonya
*/
protected static function fetch_image_id_query( $url_stripped, $attachment_url ) {
global $wpdb;
$query_sql = $wpdb->prepare(
"
SELECT wposts.ID
FROM {$wpdb->posts} wposts, {$wpdb->postmeta} wpostmeta
WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_key = '_wp_attached_file' AND wpostmeta.meta_value IN ( %s, %s ) AND wposts.post_type = 'attachment'
",
$url_stripped, $attachment_url
);
$result = $wpdb->get_col( $query_sql );
return empty( $result ) || ! is_numeric( $result[0] ) ? false : intval( $result[0] );
}
/**
* add a filter to change the minimum width required for backstretch image
* @return integer sets the minimum width for backstretch effect