MetaBox user field - how to show current value when query args exclude it

This topic has 4 replies, 2 voices, and was last updated 4 years, 9 months ago by realj42.

Viewing 5 posts - 1 through 5 (of 5 total)

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February 17, 2020 at 1:43 AM #18310

Participant

To explain - I have set up a membership post-type to hold membership details for WordPress Users. Naturally the membership post has a 'user_id' post meta. And users have a 'membership_id' user-meta. In the Membership meta-box there is a user field with select-type 'select advanced'. Now I tried to make things easier for the admin when adding a new membership by restricting the list of user ids shown to only those who have no membership already. Ok that works fine, simplifies adding a new members. The problem is when editing a membership then the user-name is not shown at all - of course the user now has a membership so is excluded by the query, and cannot be selected. When the post is saved, the user-id is removed from the membership post meta! This happens even if you do not try to update the user.

My current code below. So my question now is - is there any way to include current value of the user-id field on meta-box edit - I would not expect the user id to change once a membership is set up so maybe it can be set to read-only for Edit?
Thanks for any guidance on this

            'fields' => array(
                array(
                    'name'  => 'Member',
                    'desc'  => 'The user holding this membership - must already exist',
                    'id'    => SHS_POST_META_PREFIX . 'user_id',
                    'type'  => 'user',
                    'field_type'  => 'select_advanced',
                    'placeholder' => 'Select member',
                    'query_args'  => array(
                        'meta_query' => array(
                            'relation' => 'or',
                            array(
                                'key' => SHS_POST_META_PREFIX . 'membership_id',
                                'value' => 0,
                                'compare' => 'NOT EXISTS',
                                'type' => 'numeric',
                            ),
                            array(
                                'key' => SHS_POST_META_PREFIX . 'membership_id',
                                'value' => 0,
                                'compare' => '=',
                                'type' => 'numeric',
                            )
                        )
                    ),
                ),

February 17, 2020 at 9:34 PM #18319

Anh Tran

Keymaster

Hi, I got the problem. The query args inherits all parameters from get_users() function, which has a parameter include that you can use in case of editing a membership.

This is a pseudo-code I could imagine:

$include = [];
if ( $_GET['post'] ) { // Edit a post
    $post_id = $_GET['post'];
    $user_id = get_post_meta( $post_id, 'user_id', true );
    $include[] = $user_id;
}
// Then in the query args, just add 'include'
..
'query_args' => [
    'include' => $include,
    ..
],

February 17, 2020 at 11:25 PM #18325

realj42

Participant

Hi that is great,thanks. I assume this code should be placed in an rwmb_before() action callback?

Cheers
Hywel

February 19, 2020 at 10:52 AM #18337

Anh Tran

Keymaster

Hi Hywel,

It should be placed inside the rwmb_meta_boxes filter, just before your meta box registration code, like this:

add_filter( 'rwmb_meta_boxes', function( $meta_boxes ) {
    $include = [];
    if ( $_GET['post'] ) { // Edit a post
        $post_id = $_GET['post'];
        $user_id = get_post_meta( $post_id, 'user_id', true );
        $include[] = $user_id;
    }

    $meta_boxes = [
        'title' => 'Test',
        ...
        'fields' => [
            [
                'name' => 'Member',
                ...
                'query_args' => [
                    'include' => $include,
                    ..
                ]
            ],
        ],
    ];
} );

February 19, 2020 at 4:48 PM #18343

realj42

Participant

Thanks Anh Tran, should have realised that!

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