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WordPress

Andrew Chappell
Andrew Chappell
12,782 Points
Posted by Andrew Chappell
Andrew Chappell
12,782 Points

Only allow editors or administrators to select the featured category in Wordpress admin.

I'm looking into the Wordpress filter get_terms_fields which is defined here: http://adambrown.info/p/wp_hooks/hook/get_terms_fields?version=3.9&file=wp-includes/taxonomy.php

// edit categories based on whether user can manage options

add_filter('get_terms_fields', 'only_editors');

function only_editors($selects = array(), $args = array(), $taxonomies = array() ) {

if (current_user_can = 'manage_options' ) {
        $selects[] = 'featured';
        $args[] = 'featured';
        $taxonomies[] = 'featured';

}


}

I know this isn't correct but that is essentially what I want do. I'm very inexperienced with hooks though so any help appreciated.

2 Answers

Aaron Jackson
Aaron Jackson
5,644 Points
Aaron Jackson
Aaron Jackson
5,644 Points

If you are trying to limit things in the back end of WordPress to certain users based on their roles then, an easier way to do that is by using the following plugin http://wordpress.org/plugins/user-role-editor/

Andrew Chappell
Andrew Chappell
12,782 Points
Andrew Chappell
Andrew Chappell
12,782 Points

Thanks Aaron. I will look into that If i can't find a solution.

Andrew Chappell
Andrew Chappell
12,782 Points
Andrew Chappell
Andrew Chappell
12,782 Points

I have found a solution. Credit to the author from this website: http://shailan.com/2598/how-to-exclude-categories-and-tags-from-your-widgets/

Basically the solution is to use the list_terms_exclusions hook and pass in the ID of the category you want to filter.

function shailan_filter_terms( $exclusions, $args ){

     if (!current_user_can('manage_options') ) {

        // IDs of terms to be excluded
        $exclude = "239"; // CHANGE THIS TO IDs OF YOUR TERMS

        // Generation of exclusion SQL code
        $exterms = wp_parse_id_list( $exclude );
        foreach ( $exterms as $exterm ) {
                if ( empty($exclusions) )
                        $exclusions = ' AND ( t.term_id <> ' . intval($exterm) . ' ';
                else
                        $exclusions .= ' AND t.term_id <> ' . intval($exterm) . ' ';
        }

        // Closing bracket
        if ( !empty($exclusions) )
            $exclusions .= ')';

        // Return our SQL statement
        return $exclusions;

    }
}

// Finally hook up our filter
add_filter( 'list_terms_exclusions', 'shailan_filter_terms', 10, 2 );

Now if the user is not an administrator they will not be able to select the featured category when editing the post. Very nice! Hopefully this helps someone :)