plugin-development - Read For Learn

Can we create a category list page in WordPress?

Plugin Settings not Saving on Ajax re-ordered table

So the option profile_element_order forms is an array term – and WordPress considers that entire array to be on option. When you click ‘save’ the form data is posted to WordPress. WordPress recieves this as an array and it updates your option-row in the database by over-riding the old options array with a the one … Read more

How to use is_multisite() in a must-use-plugin?

MU-Plugins load very early– earlier that your theme or your normal plugins. Because of that, you sometimes need to hook functions that you would otherwise not have to hook. add_action( ‘plugins_loaded’, function () { if (( is_multisite() && !current_user_can(‘manage_network’) ) || ( !is_multisite() && !current_user_can(‘create_users’))) { add_action( ‘init’, create_function( ‘$a’, “remove_action( ‘init’, ‘wp_version_check’ );” ), … Read more

WordPress Settings API: saving multiple rows of similar data

These are the best two articles i’ve read(i’m sure there are others to) on creating multiple options using the Settings API, one covers usage inside a theme and the other inside a plugin, but essentially both actuall cover doing the same thing(registering a page and having some savable fields inside that page). Themeshaper – Incorporating … Read more

Hello dolly type plugin that allows people to add their own

Don’t use settings api for this. Register a custom post type, ‘Joke’ see register_post_type docs add_action( ‘init’, function () { $labels = array( ‘name’ => ‘Jokes’, ‘singular_name’ => ‘Joke’, ‘add_new’ => ‘Add New’, ‘add_new_item’ => ‘Add New Joke’, ‘new_item’ => ‘New Joke’, ‘edit_item’ => ‘Edit Joke’, ‘view_item’ => ‘View Joke’, ‘all_items’ => ‘All Jokea’, ‘search_items’ … Read more

Problems with removing admin bar

There is already an per-user-option to disable the admin-bar in the latest WordPress versions. It can be found in the user profile settings: …/wp-admin/profile.php (click on your name after logging in)

Do uploaded plugins get updates if they came from the wordpress plugin directory?

Here is how you should be updating your plugin. The WordPress install sends data to the repository and the repository sorts out the versioning and talks back to the install. Here is an article by Mark Jaquith on this subject, and the lengths to go though to turn it off. There has been a vigorous … Read more

Multiple entries in get_option results? or why is _multiwidget set to 1?

I found the answer. Multiwidget is a nice new feature within wordpress’ new widget API. Yet there is sparse documentation on how to use it. $options = get_option( ‘your_option_id’ ); if( isset($options) && isset($options[$this->number])) { //$this->number returns the unique widget id that corresponds to the database index $instance_options = $options[$this->number]; } //now use $instance_options[‘setting’]

Odd behaviour with submenu link creation

On the same page in codex you have this : NOTE: If you’re running into the “You do not have sufficient permissions to access this page.” message in a wp_die() screen, then you’ve hooked too early. So it answers to you question partly. The second part, the following code should work : add_action(‘admin_menu’, ‘my_add_submenu’); function … Read more

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