HTML in custom fields is, from my point of view, a weird use case of custom fields. Even more if the purpose of the used HTML is just look and feel (<strong> and <i> can be seen as just look and feel). It is really better if you use the HTML markup on the custom … Read more
Well, first use the hook properly. The post ID will be passed in. You don’t need $post->ID. Second, use the correct hook. If you want to run save_post only for your booking type, use save_post_booking But otherwise, the code works. I just ran a quick test. function booking_status_is_updated($post_id){ if(get_post_meta($post_id,’booking_status’,true)==’denied’){ delete_post_meta($post_id,’booking_slot’); } } add_action(‘save_post_booking’,’booking_status_is_updated’);
One of the Carbon Fields developers here. Thank you for your feedback! Currently, the Carbon Fields stores only the keys and they don’t have a built-in method to retrieve the selected values from the options array. You can pass a callable which returns an array with the options as an argument to the add_options method. … Read more
If that is all of your code, you’re missing a save_post action to save the data. Refer to the code sample provided on add_meta_box. add_action( ‘save_post’, ‘save_my_meta_box_data’ ); function save_my_meta_box_data( $post_id ){ // make sure it’s not an autosave if ( defined( ‘DOING_AUTOSAVE’ ) && DOING_AUTOSAVE ) return; // verify your nonce if ( !wp_verify_nonce( … Read more
Correct processing of `$_POST`, following WordPress Coding Standards
Q1 Yes, you can store serialized arrays as a single meta key, eg: update_post_meta( $post_id, ‘my_items’, array( 1, 2, 3, 4 ); Furthermore, you can store multiple values against a single meta key, eg: add_post_meta( $post_id, ‘my_items’, 1 ); add_post_meta( $post_id, ‘my_items’, 2 ); The latter is preferred because meta queries can be more efficiently … Read more
Apparently the serialized data got corrupt, calling the field by query got me this error. WordPress does not return an error when the serialized data is corrupt just a bool(false). Solved this by insert/update the serialized data in a base64_encode() and call it with base64_decode(). This seems to do the trick and data can be … Read more
OK, so you have some code that uses add_post_meta and you want to make it add only unique values. The problem in here is that add_post_meta does exactly what it’s name is saying – it adds a post meta value. There is 4th arg for that function that’s called unique, but it work based on … Read more
You can get using this using SQL global $wpdb; // For single record $wpdb->get_row(“SELECT post_id FROM $wpdb->postmeta WHERE meta_key = $param1 AND meta_value = $param2”); // For multiple records $wpdb->get_results(“SELECT post_id FROM $wpdb->postmeta WHERE meta_key = $param1 AND meta_value = $param2” ); Use this for query $args = array( ‘posts_per_page’ => 10, // -1 for … Read more
WordPress fires the updated_{$meta_type}_meta hook which fires after the metadata is updated. In your case, the hook would be updated_post_meta and you could have your function run on that hook instead of the save_post hook.