My custom metabox stops working on WP 4.9.8

This topic has 8 replies, 2 voices, and was last updated 1 year ago by FED.

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August 17, 2018 at 9:10 PM #11042
Resolved FED
Participant
I’m doing something a little out of the ordinary. I’m using the MB Term Meta to create a list of items that I want to use later on in the admin. Basically, if a WP category is selected, I want to show some additional meta associated with the category and use that meta to change the template on the front end. To do this, I made a custom metabox which grabs the data out of the category I’m using.

Here’s the code for the custom metabox, it’s pretty straight-forward. The problem is, I don’t think it’s even firing on the latest version of WP. I can’t even get it to echo anything out. There were some changes to meta fields in the newest version and I haven’t had a chance to dig in. For now, I’m rolling back my install, but any help would be very much appreciated!
```
if ( class_exists( 'RWMB_Field' ) ) {

class RWMB_Unit_Field extends RWMB_Checkbox_List_Field {

public static function filter_options( $field, $options ) {
  $current_categories = get_the_category();

  foreach( $current_categories as $cat ){

    $units = rwmb_meta( 'unit', array( 'object_type' => 'term' ), $cat->term_id );
  }

  $options = [];

  foreach ( $units as $unit ){
    $options[] = (object) array( 'value' => sanitize_title_with_dashes($unit['name']), 'label' => $unit['name'] );
  }

    return $options;
 }

}
}
```
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August 17, 2018 at 10:11 PM #11043

FED
Participant

Scratch that! I updated wordpress and plugins at the same time. It looks to be a problem in metabox 4.15.0 and up. I was testing on 4.15.2 and it was still not working there. Rolling back to 4.14.11 fixes the problem.

August 20, 2018 at 1:48 PM #11060

Anh Tran
Keymaster

Hi FED,

Since 4.15, I’ve optimized the code for all “choice” field. I removed the filter_options function that is not needed. Can you check the source code of the choice field and try the latest version on Github?

August 21, 2018 at 1:56 AM #11074

FED
Participant

Ah, I was building off the old version of the plugin, so no wonder this stopped working when I updated. Thanks for your prompt reply!

September 12, 2018 at 9:56 PM #11329

FED
Participant

Ok, I’m having some trouble updating my custom field to override the format_single_value method in the RWMB_Choice_Field. I’m extending the RWMB_Input_List_Field class because I want a list of checkboxes. Basically, I want to be able to pre-fill the checkbox options after a user as applied a Category to a CPT.

However, I’m getting Undefined index: multiple when I try to do that. I guess that makes sense because I’m using multiple values, but trying to override the format_single_value method. Is there another method in RWMB_Input_List_Field that I should be using instead?

Thanks in advance.

P.S. I can make a new post if that is preferred.

September 14, 2018 at 2:36 PM #11337

Anh Tran
Keymaster

Hi,

Can you show your code? The function format_single_value doesn’t have any relation to multiple. Maybe it comes from the format_clone_value from inc/field.php file, where it checks if the field has multiple values.

October 26, 2018 at 1:49 AM #11764
FED
Participant
Thanks for troubleshooting this with me. I’m at the point now where I can see the fields I want in the admin… but when I try and save the post, I get a bunch of notices and the post won’t save (Notice: Undefined index: clone in /phila.gov/wp/wp-content/plugins/meta-box/inc/meta-box.php on line 301) . Here’s what I’m working with on the latest version of metabox:
```
if ( class_exists( 'RWMB_Field' ) ) {

  class RWMB_Unit_Field extends RWMB_Checkbox_List_Field {

    public static function normalize( $field ) {

      if( isset($_GET['post']) && get_post($_GET['post']) && isset($_GET['action']) && 'edit' == $_GET['action'] )

      $post = get_post($_GET['post']);

         if( isset($post)
             && !empty($post->post_type)
             && is_object_in_taxonomy($post->post_type, 'category')
         ){
            foreach ( (array) get_the_category($post->ID) as $cat ) {
              if ( empty($cat->slug ) )
                continue;

              //get data out of term meta field for use later
              $units[] = rwmb_meta( 'department_units', array( 'object_type' => 'term' ), $cat->term_id);
            }

          }

      if ( !isset( $units ) )
        return;

      foreach ($units as $key => $value){
        foreach($value as $name) {
          $options[] = array(
            'value' => urlencode($name['name']),
            'label' => $cat->name . ' - ' . $name['name']
          );
        }
      }

      $field = parent::normalize( $field );

      return $field;

    }

    /*Old, working version 
    public static function filter_options( $field, $options ) {
      $current_cats = get_the_category();
    
      foreach($current_cats as $cat){
        $units[$cat->name] = rwmb_meta( 'department_units', array( 'object_type' => 'term' ), $cat->term_id );
      }
    
      if ( !isset( $units ) )
        return;
    
      $options = [];
    
      foreach ($units as $key => $value){
        foreach($value as $name) {
          $options[] = (object) array( 'value' => urlencode($name['name']), 'label' => $key . ' - ' . $name['name']  );
        }
      }
    
        return $options;
     }
     */
  }
}
```
October 26, 2018 at 3:14 PM #11773

Anh Tran
Keymaster

Hi,

I see some PHP errors in your code. So I rewrote it as follows: https://ghostbin.com/paste/b9er9. Please try it.

November 7, 2018 at 9:28 PM #11877

FED
Participant

Thank you! I had to make a couple of modifications to what you posted, but your changes definitely helped! Posting the final(ish) version here in case someone else ever runs into this.

https://ghostbin.com/paste/ytadu
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