Web Development tips

Web Development tips and tricks

Wordpress

1. How to remove unnecessary menu items from word press admin panel

/**
 * ==========================================================
 * This function removes unnecessary things from
 * admitrators menu
 */
function vk_remove_admin_menu() {
    remove_menu_page('themes.php');
    remove_menu_page('plugins.php');
    remove_menu_page('options-general.php');
    remove_menu_page('tools.php');
    remove_menu_page('edit.php?post_type=page');
    remove_menu_page('edit-comments.php');
    remove_menu_page('edit.php');
    remove_menu_page('users.php');
    remove_submenu_page('edit.php', 'post-new.php');
    remove_submenu_page('edit.php?post_type=contactrequest', 'post-new.php?post_type=contactrequest');
    remove_submenu_page('edit.php', 'edit.php');
    remove_submenu_page('index.php', 'update-core.php');
}
add_action('admin_menu', 'vk_remove_admin_menu');

2. How to remove menu commands in word press admin bar

/**
 * Hook all code related to add and remove admin bar
 * @global type $wp_admin_bar : represents admin bar
 */
function vk_remove_admin_bar() {
    global $wp_admin_bar;
    $wp_admin_bar->remove_node('wp-logo');
    $wp_admin_bar->remove_node('updates');
    $wp_admin_bar->remove_node('new-page');
    $wp_admin_bar->remove_node('new-user');
    $wp_admin_bar->remove_node('new-post');
    $wp_admin_bar->remove_node('comments');
}
add_action('admin_bar_menu', 'vk_remove_admin_bar', 999);

3. Add custom post type in word press

function vk_feedback_post() {
    $lables = array('name' => 'Contact requests',
        'singular_name' => 'Contact request',
        'add_new' => 'Add new request',
        'all_items' => 'All requests',
        'add_new_item' => 'Add new request',
        'edit_item' => 'Edit this',
        'new_item' => 'New request',
        'view_item' => 'View',
        'search_item' => 'Search',
        'not_found' => 'No requests found'
        , 'not_found_in_trash' => 'Not found im recyvle bean',
        'parent_item_colon', 'Parent item');

    $args = array(
        'labels' => $lables,
        'public' => true,
        'has_archive' => false,
        'publicly_queryable' => false,
        'query_var' => false,
        'rewrite' => true,
        'capability_type' => 'post',
        'hierarchical' => false,
        'support' => array('excerpt'),
        'menu_position' => 1,
        'exclude_from_search' => true
    );
    register_post_type('contact_request', $args);
}

add_action('init', 'vk_feedback_post');

4. Manage display of added post in admin panel (i.e. add or remove columns)
A. Add Columns

/**
 * ==================================================================
 * Add columns for contact request form
 * @param type $columns
 * @return string
 */
function vk_add_contact_col($columns) {
    $columns['email'] = 'Email';
    $columns['phone'] = 'Phone';
    $columns['message'] = 'Comments';
    return $columns;
}

add_filter('manage_edit-contact_request_columns', 'vk_add_contact_col');

B. Manage from where data will come

/**
 * =================================================================
 * Retrive all data from contact request post type
 * 
 * @param type $column
 * @param type $post_id
 */
function vk_manage_contact_columns($column, $post_id) {
    switch ($column) {
        case 'email':
            echo get_post_meta($post_id, 'email', true);
            break;
        case 'phone':
            echo get_post_meta($post_id, 'phone', true);
            break;
        case 'message':
            echo get_post_meta($post_id, 'message', true);
            break;
    }
}

add_action('manage_contact_request_posts_custom_column', 'vk_manage_contact_columns', 10, 2);

5. Add text to footer

function vk_footer_left() {
    echo 'StudioSixteen - Admin ';
}
add_filter('admin_footer_text', 'vk_footer_left');

6. Remove wordpress version info from admin panel

remove_filter('update_footer', 'core_update_footer', 5);

7. Remove update information [notification] from admin panel

function remove_core_updates() {
    if (!current_user_can('update_core')) {
        return;
    }
    add_action('init', create_function('$a', "remove_action( 'init', 'wp_version_check' );"), 2);
    add_filter('pre_option_update_core', '__return_null');
    add_filter('pre_site_transient_update_core', '__return_null');
}
add_action('after_setup_theme', 'remove_core_updates');

6. . Session management (starting session in php)

/**
 * Session management
 */
function reg_session(){
  if (!session_id()){
    session_start();
  }
  
}
add_action('init',  'reg_session');