[Resolved] Child post form: Selecting parent post who meets specific parent field condition

[Author]

Posts

[Robert Mueller]

I am programming a Toolset child post form in which the user shall also select the parent post of an 1:n relationship. However, due to the context only parent posts fullfulling a specific field condition (e.g. type ="C") shall be visible / selectable. The conditional group offered in the GUI only allows conditions on child fields, not on parent fields when selecting the parent post. Is there any possibility for example in the expert mode to insert some condition for the parent to show up in the selection list when setting the parent post?

Any hint would be great.
Robert

[Minesh]

Hello. Thank you for contacting the Toolset support.

As I understand - on a child post form where you have parent post select field using which you can assign the parent post, you want to display only parent post where parent post custom field type value is equal to "C". is that correct? if yes:

Can you please try to add the following code to "Custom Code" section offered by Toolset:
=> https://toolset.com/documentation/programmer-reference/adding-custom-code/using-toolset-to-add-custom-code/#adding-custom-php-code-using-toolset

Alternatively - you can also add the following code to your current theme's functions.php file:

function func_filter_parent_dropdown_posts_with_custom_field_value($query){
    global $post;
    
 
    if (defined('DOING_AJAX') && DOING_AJAX and isset($_REQUEST['action']) and isset($_REQUEST['slug']) and isset($_REQUEST['form_type'])    ) { 
     
        $parent_post_type = 'myparent_posttype';  /// replace with your parrent post type slug
        $relationship_slug = 'relationship-slug'; ///replace with your post-relationship slug
         
      
       if($_REQUEST['action']=='select2_potential_relationship_parents' and $_REQUEST['slug']==$relationship_slug){
              
            if($query->query['post_type'][0]==$parent_post_type ){
                $meta_query = array(   array(
                                     'key' => 'wpcf-types',
                                     'value' => 'C',
                                     'type' => 'CHAR',
                                    'compare'=> '=' )
                                );
                $query->set( 'meta_query', $meta_query );
                 
                 
            }
        }       
    }
}
add_action( 'pre_get_posts', 'func_filter_parent_dropdown_posts_with_custom_field_value', 101, 1 );

Can you please try to use the above code and check if that help you to resolve your issue.

[Robert Mueller]

Thank you very much.