• silvana

• in reply to: Unique value field
• September 11, 2018 at 6:29 am

Hi John, thanks for your reply and for your code!
After all, I think this is what I did (hard code the post_type), except for removing the 'post__not_in' => array($post_id), just because my form can both edit and create a post.

So I wasn’t that wrong, was I?

Actually, it worked that way but I’m afraid that it could have a flaw and I am not seeing it.

• silvana

• in reply to: Unique value field
• September 11, 2018 at 6:07 am

When editing, the ID comes form the url (REQUEST) and the invented ID disappears when the post is saved with its real new id.

I’d still be glad with a more elegant solution.
How could I let wp create a new ID itself before the post is saved or even exists?

here is the complete code of this function:

add_filter('acf/validate_value/name=fld_pubdoi_doinumber', 'acf_unique_value_field_pubs', 10, 4);
add_filter('acf/validate_value/name='.$field_name, 'acf_unique_value_field_pubs', 10, 4);
function acf_unique_value_field_pubs($valid, $value, $field, $input) {

    if (!$valid ) {
      return $valid;
    }
   
    if (isset($_POST['post_ID'])) {
        $post_id = intval($_POST['post_ID']);
    } elseif (isset($_POST['post_id'])) {
        $post_id = intval($_POST['post_id']);
    } elseif (isset($_REQUEST['item_id'])) {//IIQINST ONLY
        $post_id = intval($_REQUEST['item_id']);
    } else {
        $post_id = intval('9999999999999999');
    }

    //$post_type = get_post_type($post_id);
    $post_type = 'pt_publicacoes_doi';
    $field_name = $field['name'];

    $args = array(
      'post_type' => $post_type,
      'post_status' => 'publish, draft',
      'post__not_in' => array($post_id),
      'meta_query' => array(
        array(
          'key' => $field_name,
          'value' => $value
        )
      )
    );
    $query = new WP_Query($args);
 
        if( $query->have_posts() ) {
            $query->the_post();
            $another_post_id = get_the_ID();
        }

        if (count($query->posts)){
          return $field['label'].' already exists';
        }

        return true;

}

And the form args:

$item_id = ( isset($_GET['item_id']) ) ? $_GET['item_id'] : 'new_post';

acf_form(array(
        'id' => 'iiq-addedit-pub-form',
        'post_id'       => $item_id,
        'post_title'    => false,
        'post_content'  => false,
        'form_attributes' => array(),
        'submit_value' => __('SAVE', 'acf'),
        'html_submit_button'    => '<input type="submit" class="but-form" value="%s" />',
        'new_post'      => array(
            'post_type'     => 'pt_publicacoes_doi',
            'post_status'   => "publish"
        ),
        'updated_message' => __($text_return, 'acf'),
        'html_updated_message'  => '<div id="adm-message" class="updated"><p>%s</p></div>',
        'return' => $return_url,
      
    ));

• silvana

• in reply to: Unique value field
• September 11, 2018 at 4:56 am

Hi Howdy_McGee, thanks a lot for your reply.
At some point I figured it out that the problem was the missing id for new post.
So I did the following:
(probably not the best idea, but…)

   (...)
   if (isset($_POST['post_ID'])) { 
        //just like it was at first
        $post_id = intval($_POST['post_ID']);

    } elseif (isset($_POST['post_id'])) { 
        //just like it was at first
        $post_id = intval($_POST['post_id']);

    } elseif (isset($_REQUEST['item_id'])) {
        // BECAUSE MY FORM COULD BE EDITING INSTEAD OF INCLUDING
        $post_id = intval($_REQUEST['item_id']);

    } else { 
        // I INVENTED AN ID FOR THIS NEW POST
        $post_id = intval('9999999999999999');
    }

    //And since I couldnt check the post-type for a new post, 
    //I specified the post-type here (cause in my case this function only applies to this form)
    $post_type = 'pt_publicacoes_doi';

    $field_name = $field['name'];

(...)