How do I Manually (via PHP) set values for a Checkbox List...?

This topic has 3 replies, 2 voices, and was last updated 2 years, 5 months ago by Long Nguyen.

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July 20, 2022 at 1:51 AM #37074

Nhymnble
Participant

I've looked through the documentation, and missed it if it is in there, but can't find an example of manually (via PHP) setting the values for a Checkbox List. Could anyone give me an example?

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July 20, 2022 at 12:36 PM #37079

Long Nguyen
Moderator

Hi,

You can use the WordPress function add_post_meta() with the last parameter set to false. For example:

add_post_meta( 123, 'checkbox_list_vk9atamt05c', 'value1', false );

where 123 is the post ID. Read more on the documentation
https://developer.wordpress.org/reference/functions/add_post_meta/
https://docs.metabox.io/fields/checkbox-list/#data

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July 21, 2022 at 3:52 AM #37092

Nhymnble
Participant

Thanks for this code, it works great on it's own. Here is my use case:

I have a select field with the following values ('studio', '1 bed', '2 beds', '3 beds',...'10 beds'. I am using Gruid Builder WP to create facets. I need my facets for Bedrooms to be studio, 1 bed, 2 beds, 3 beds, 4 beds, and 5+ beds. My thought is using a checkbox list with those values which I will populate before save based on the number of beds chosen in my select field. Then I can just create a facet based off the checkbox list. How do I use the add_post_meta function with rwmb_before_save_post? add_post_meta requires a post ID, but I'm not sure how to retrieve that when utilizing the rwmb_before_save_post... Sorry for the noobish questions.

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July 21, 2022 at 12:46 PM #37099
Long Nguyen
Moderator
Hi,

The action hook rwmb_before_save_post support passing the object ID (post ID) to the function inside. You can use it in your code
```
add_action( 'rwmb_event-details_before_save_post', function( $post_id ) {
    add_post_meta( $post_id, 'checkbox_list_id', 'value1', false );
} );
```
Read more on the documentation
https://docs.metabox.io/actions/rwmb-before-save-post/

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