plugin-development - Read For Learn

Inserting Taxonomy Terms During a Plugin Activation?

Here is the fixed version of your code. class vsetup { function __construct() { register_activation_hook(__FILE__,array($this,’activate’)); add_action( ‘init’, array( $this, ‘create_taxonomies’ ) ); } function activate() { $this->create_taxonomies(); wp_insert_term(‘Action’,’genre’); wp_insert_term(‘Adventure’,’genre’); } function create_taxonomies() { $genre_args = array( ‘hierarchical’ => true, ‘labels’ => array( ‘name’=> _x(‘Genres’, ‘taxonomy general name’ ), ‘singular_name’ => _x(‘Genre’, ‘taxonomy singular name’), ‘search_items’ … Read more

How should one implement add_settings_error on custom menu pages?

There are several components to error/notice creation and display process: add_settings_error() call to add item to stack (global $wp_settings_errors variable). settings_errors transient that keeps the errors so they survive move from page to page. settings_errors() function get_settings_errors() to retrieve errors from memory or transient and then displays them. These work like a charm for Settings … Read more

How are bulk actions handled in custom list table classes?

Assuming you’re using the standard column_cb() function, the list table will pass the IDs of the selected rows in an array in $_GET, labeled as whatever you assigned to ‘singular’ in the list table’s constructor. Here’s a typical column_cb(): function column_cb($item){ return sprintf( ‘<input type=”checkbox” name=”%1$s[]” value=”%2$s” />’, /*$1%s*/ $this->_args[‘singular’], //Let’s simply repurpose the table’s … Read more

Giving Multiple Authors Access to a Plugin’s WP.org Repo

As long as you use a valid WordPress.org username in the Contributors: tag in readme.txt, then yes: once the readme.txt is parsed by Extend/SVN, then the specified username automagically has SVN-commit access to the Plugin. Note: I know that it works for the Contribuors: tag, as I am such a contributor on a couple Plugins. … Read more

Get List of Registered Meta Boxes and Removing Them

Not really, but you can define your own. All meta boxes are stored in the global variable $wp_meta_boxes which is a multi-dimensional array. function get_meta_boxes( $screen = null, $context=”advanced” ) { global $wp_meta_boxes; if ( empty( $screen ) ) $screen = get_current_screen(); elseif ( is_string( $screen ) ) $screen = convert_to_screen( $screen ); $page = … Read more

How to Use Checkbox in Custom Option Page Using The Setting API

Have a look at: The Complete Guide To The WordPress Settings API (Part 8: Validation, Sanitisation, and Input II): add_settings_field( ‘Checkbox Element’, ‘Checkbox Element’, ‘sandbox_checkbox_element_callback’, ‘sandbox_theme_input_examples’, ‘input_examples_section’ ); function sandbox_checkbox_element_callback() { $options = get_option( ‘sandbox_theme_input_examples’ ); $html=”<input type=”checkbox” id=”checkbox_example” name=”sandbox_theme_input_examples[checkbox_example]” value=”1″” . checked( 1, $options[‘checkbox_example’], false ) . ‘/>’; $html .= ‘<label for=”checkbox_example”>This is an … Read more

Send user activation email when programmatically creating user

To accomplish user activation process you need to do following steps: after create new user add a custom user field which indicates that this user has to activate his account send an email with activation code, provide a link in this email to a page where user will be activated implement activation page when user … Read more

Update plugin from personal API

For the benefit of others who find this page, I suggest those wishing to provide their own updates outside the official WP repository check out this project on GitHub, that demonstrates the functionality: https://github.com/jeremyclark13/automatic-theme-plugin-update

How to validate custom fields in custom post type?

You’re on the right track. I test the fields in the save_post callback, and then use admin notices to display errors to the user when a field fails validation. They show up just in a highlighted box at the top of the page, just like any errors/messages that WordPress itself generates. Here’s a simple example … Read more

How to prevent Composer dependency conflicts amongst WP plugins?

The answer is — you can’t because WordPress can’t. There is no dependency management concept in WP and it was the same case before Composer had even existed. The rise of autoload (Composer or otherwise) slightly helps with it, since you might just be getting different copy loaded (hopefully close enough) rather than outright fatal … Read more

+ More