Wordpress

Get current post ancestors in WordPress

Get current post ancestors and list it’s children in WordPress.

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global $post;
$ancestor = get_post_ancestors($post->ID);
$id = ($ancestor) ? $ancestor[count($ancestor)-1]: $post->ID;
$post_ancestor = get_post($id);
 
$args = array(
    'post_type' => 'page',
    'post_parent' => $id,
    'posts_per_page' => -1
);
$pages = get_posts($args);
if($pages){
    echo '<div class="subpages">';
    echo '<h3>' . $post_ancestor->post_title . '</h3>';
    echo '<ul>';
    foreach($pages as $page){
        if($page->ID === $post->ID){
            $class = 'active';
        } else {
            $class = '';
        }
    echo '<li class="' . $class . '"><a href="' . get_permalink($page->ID) . '">' . $page->post_title . '</a></li>';
}
echo '</ul>';
echo '</div>';
}

 

MySQL queries and php load time in WordPress

Get number of MySQL queries and php load time of your theme in WordPress, by adding this last in your footer.php-file. Don’t forget to add the constant WP_ENV to your functions.php to make sure it stays in the development environment.

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if(WP_ENV == 'development'){
   // define('WP_ENV', 'development'); in wp-config.php
   echo get_num_queries(); ?> queries took <?php timer_stop(1); ?> seconds to load.<?php
}

 

Backup your WordPress database during development with GIT

Save daily backups of your WordPress database to file during development, to store them in GIT alongside with other developers databases.

First, define the environment by adding this to your wp-config.php:

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define('WP_ENV', 'development'); // development, staged or production

Second, paste this to your functions.php:

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// If the constant WP_ENV (from wp-config.php) is set to development
if(WP_ENV == 'development'){
 
    // If current user is administrator
    if(is_user_logged_in() && current_user_can('manage_options')){
 
        // Set to 'd' to only save backup from the latest 30 days or so. This can be changed to houry or weekly or whatever.
        $backup_day = date_i18n('Ymd');
        $user = wp_get_current_user();
        $user_login = $user->user_login;
 
        // Include your username in the filename if you are using GIT along side with other developers
        $sql_filename = $user_login . '_' . $backup_day . '.sql';
 
        // Get latest file update date
        $updated_db_file = get_option('updated_db_file_' . $user_login);
 
        // Set the backup path
        $backup_path = get_template_directory() . '/_db_backup/';
 
        // Is the latest file update today? if not, continue
        if($updated_db_file != $backup_day){
            $filename = $backup_path . 'index.php';
            if(!file_exists($filename)){
 
                // Check if path exist, otherwise, create index.php and .htacces and block acces
                $mk_path = $backup_path;
                mkdir($mk_path, 0700);
                $write_index = fopen($mk_path . 'index.php', 'w') or die('Kunde inte skapa index.php');
                $txt = '<?php // Silence is golden';
                fwrite($write_index, $txt);
                fclose($write_index);
 
                $write_htaccess = fopen($mk_path . '.htaccess', 'w') or die('Kunde inte skapa htaccess');
                $htaccesstxt = 'deny from all';
                fwrite($write_htaccess, $htaccesstxt);
                fclose($write_htaccess);
            }
 
            // Make sure this points to your mysqldump command
            exec('/Applications/AMPPS/mysql/bin/mysqldump  --user=' . DB_USER . ' --password=' . DB_PASSWORD . ' --host=' . DB_HOST . ' ' . DB_NAME . '   > ' . $backup_path . $sql_filename . ' 2>&1');
 
            // Update option value to set date to today
            update_option('updated_db_file_' . $user_login, $backup_day);
        }
    }
}

 

Advanced Custom Fields and GIT in WordPress

Include Advanced Custom Fields or Advanced Custom Fields Pro in your theme and save fields groups as json (pretty awesome). This will allow you to easily version control fields and fieldgroups in GIT. Just move the plugin to your theme folder, rename it to “acf” and create another folder called “acf-fields”. Paste this to your functions.php.

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// Set the path
add_filter('acf/settings/path', 'my_acf_settings_path');
  function my_acf_settings_path( $path ) {
    $path = get_stylesheet_directory() . '/acf/';
    return $path;
}
 
// Set the directory
add_filter('acf/settings/dir', 'my_acf_settings_dir');
  function my_acf_settings_dir( $dir ) {
    $dir = get_stylesheet_directory_uri() . '/acf/';
    return $dir;
}
 
// uncomment this to hide the menu in wp-admin
//add_filter('acf/settings/show_admin', '__return_false');
 
// Include acf in your theme
include_once( get_stylesheet_directory() . '/acf/acf.php' );
 
 
// Save fields groups to file
add_filter('acf/settings/save_json', 'my_acf_json_save_point');
function my_acf_json_save_point( $path ) {
  $path = get_stylesheet_directory() . '/acf-fields/'; // this folder needs to be created first
  return $path;
}
 
// Load field groups from file
add_filter('acf/settings/load_json', 'my_acf_json_load_point');
function my_acf_json_load_point( $paths ) {
  unset($paths[0]);
  $paths[] = get_stylesheet_directory() . '/acf-fields/'; // this folder needs to be created first
  return $paths;
}

 

Replace non-english characters (i.e. å,ä and ö) on file upload in WordPress

Replace non-english and weird characters in file name on upload in WordPress by adding this to your functions.php.
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add_filter( 'sanitize_file_name', 'extended_sanitize_file_name', 10, 2 );
function extended_sanitize_file_name( $filename ) {
    $sanitized_filename = remove_accents( $filename );
    return $sanitized_filename;
}

Updated. Credits goes to http://annalinneajohansson.com/2013/10/10/rensa-specialtecken-ur-filnamn-vid-uppladdning-i-wordpress/.

Modify ACF post object result to include Polylang language in WordPress admin

Modify the result in a ACF post object field in WordPress admin by including language slug from Polylang. Instead of having multiple object with the same title (but on different languages), add this to your functions.php. Don’t forget to change “field_name” to what ever your field is called.

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add_filter('acf/fields/post_object/result', 'my_post_object_result', 10, 4);
function my_post_object_result( $result, $object, $field, $post ) {
    global $polylang;
    $language = $polylang->model->get_post_language($object->ID);
    $result .= ' (' . $language->slug . ')';
    return $result;
}
 
add_filter('acf/fields/post_object/result/name=field_name', 'my_post_object_result', 10, 4);

 

Remove menu items for non-administrators in WordPress admin

Remove menu items for non-administrators in WordPress admin by adding this to your functions.php.

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if(!current_user_can('manage_options')){
    function remove_menus(){
        remove_menu_page( 'index.php' );                  //Dashboard
        remove_menu_page( 'edit.php' );                   //Posts
        remove_menu_page( 'upload.php' );                 //Media
        remove_menu_page( 'edit.php?post_type=page' );    //Pages
        remove_menu_page( 'edit-comments.php' );          //Comments
        remove_menu_page( 'themes.php' );                 //Appearance
        remove_menu_page( 'plugins.php' );                //Plugins
        remove_menu_page( 'users.php' );                  //Users
        remove_menu_page( 'tools.php' );                  //Tools
        remove_menu_page( 'options-general.php' );        //Settings
    }
    add_action( 'admin_menu', 'remove_menus' );
}

 

Disable WordPress Emojis

Disable WordPress emojis and remove the annoying  inline javascript and css on your WordPress site, simply by adding this to your themes functions.php.

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function disable_wp_emojicons() {
 
  // remove everything related to emojis
  remove_action( 'admin_print_styles', 'print_emoji_styles' );
  remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
  remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
  remove_action( 'wp_print_styles', 'print_emoji_styles' );
  remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
  remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
  remove_filter( 'comment_text_rss', 'wp_staticize_emoji' );
 
  // remove TinyMCE emojis
  add_filter( 'tiny_mce_plugins', 'disable_emojicons_tinymce' );
}
add_action( 'init', 'disable_wp_emojicons' );
 
 
function disable_emojicons_tinymce( $plugins ) {
  if ( is_array( $plugins ) ) {
    return array_diff( $plugins, array( 'wpemoji' ) );
  } else {
    return array();
  }
}