callbacks - Read For Learn

How to check if which hook triggered the call to a function?

I found the magic code you need. Use current_filter(). This function will return name of the current filter or action. add_action(‘my_test_hook_1′,’my_test_callback_function’); add_action(‘my_test_hook_2′,’my_test_callback_function’); add_action(‘my_test_hook_3′,’my_test_callback_function’); add_action(‘my_test_hook_4′,’my_test_callback_function’); function my_test_callback_function(){ $called_action_hook = current_filter(); // ***The magic code that will return the last called action echo “This function is called by action: ” . $called_action_hook ; } For reference: https://developer.wordpress.org/reference/functions/current_filter/

Using a private method as an action callback from within a class

It’s not possible to call a private method through an action or filter. When calling add_action or add_filter, WordPress adds the callback to a list of callbacks for that specific action or filter. Then, when do_action or apply_filters is called, WordPress uses call_user_func_array to call the linked functions and methods. As call_user_func_array is not called … Read more

WordPress REST API – Permission Callbacks

The issue was because I wasn’t generating and sending a nonce value with the request. In order to generate a nonce value. Localize the value of a wp_create_nonce(‘wp_rest’) function call. wp_localize_script(‘application’, ‘api’, array( ‘root’ => esc_url_raw(rest_url()), ‘nonce’ => wp_create_nonce(‘wp_rest’) )); This will then be accessible to the window object of the browser which can be … Read more

Image upload callback in new 3.5 media

There is a FileUploaded event being fired in wp-includes/js/plupload/wp-plupload.js. Alternatively (and propably the better way) you may want extend wp.Uploader with your own success callback . (function($){ $.extend( wp.Uploader.prototype, { success : function( file_attachment ){ console.log( file_attachment ); } }); })(jQuery);

Can an action callback prevent the parent from continuing execution?

Short answer: no. Long answer: also no. Actions don’t work that way. Edit: To elaborate and make your question totally generic: function foo() { bar(); return 1; } function bar() { // stuff } There is nothing you can put in stuff that will prevent a call to foo() from returning 1, other than halting … Read more

wp enqueue script using scripts from cdn with a safety callback

The accepted answer is completely wrong. I suspect a gross misunderstanding of the OP’S question, since anyone with even a little experience with programming will never recommend something like “cache your own copy of the script, and perform get_url calls every 20 minutes”. @Paul G. says there is no point in loading from the CDN … Read more

current_shortcode() – detect currently used shortcode

This is untested, but the callback function is provided with an array of arguments, $args which give (if any) the paramters provided with the shortocode. The zeroth entry sometimes contains the name of the shortcode used (e.g. public_email). By sometimes I mean… The zeroeth entry of the attributes array ($atts[0]) will contain the string that … Read more

How to pass arguments from add_settings_field() to the callback function?

Look at the declaration for the function: function add_settings_field( $id, $title, $callback, $page, $section = ‘default’, $args = array() ) { } The last parameter takes your arguments and passes them to the callback function. Example from my plugin Public Contact Data foreach ($this->fields as $type => $desc) { $handle = $this->option_name . “_$type”; $args … Read more

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