post-meta - Read For Learn

Delete post meta conditionally after save post

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’);

How can I get values using key in Carbon Fields from Multiselect?

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

Metabox Data not being saved [closed]

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

How metadata API works?

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

get_post_meta returns bool(false)

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

Add a post metadata if only the key and value does not exist

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

Get post from meta_key and meta_value

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

Get updated post meta on save_post action?

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.

Identifying Importer Posts

Two things I could imagine: Check the post_modified value. Maybe import creates a definitive timestamp that you could use. You’ll still have to save the import date somewhere so you can check against it. I do some post importing via a stream/HTTP response (this is not the native importer). During the import, I map my … Read more

+ More