Get all terms inside a specific taxonomy in a multisite

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I have a father blog / main blog inside a multisite that has a specific taxonomy with 20+ terms inside it. i just need a list of all the terms inside that taxonomy…

i dont mind quering using WPDB but just dont know to how to write it correctly or in any other way i tried use: “switch_to_blog” but that doesnt work when quering terms

Any suggestion?
i tried the: Multisite Global Terms plugin (doesnt work)…

EDIT (response to question in comment)
this is an example of switch_to_blog i tried:

function multisite_profession_select(){

        switch_to_blog(1);

        $taxonomies = array('rsitecat');
        $args       = array('hide_empty' => false);
        $terms      = get_terms($taxonomies, $args );

        echo '<pre>';
        print_r($terms);
        echo '</pre>';

        restore_current_blog();

    }

The reponse i get:

WP_ERROR OBJECT
(
    [ERRORS] => ARRAY
        (
            [INVALID_TAXONOMY] => ARRAY
                (
                    [0] => INVALID TAXONOMY
                )

        )

    [ERROR_DATA] => ARRAY
        (
        )

)

3 Answers
3

No way to do that in a “word press” way…

function multisite_profession_select(){
    switch_to_blog(1);
    $taxonomies = array('rsitecat');

    $check_later = array();
    global $wp_taxonomies;
    foreach($taxonomies as $taxonomy){
        if (isset($wp_taxonomies[$taxonomy])){
            $check_later[$taxonomy] = false;
        } else {
            $wp_taxonomies[$taxonomy] = true;
            $check_later[$taxonomy] = true;
        }
    }

    $args       = array('hide_empty' => false);
    $terms      = get_terms($taxonomies, $args );

    echo '<pre>';
    print_r($terms);
    echo '</pre>';


    if (isset($check_later))
        foreach($check_later as $taxonomy => $unset)
            if ($unset == true)
                unset($wp_taxonomies[$taxonomy]);

    restore_current_blog();
}

WP will check if Taxonomy exists, but on multisite blog, its only switching $table_prefix but not actually switching to blog. In this fixed code – it should trick WP to think that taxonomy registred and retrive a term from a mu blog tables. after request – you killing fake taxonomy ghosts.

P/S/

I didn’t test code.

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