admin->add_meta_boxes()

[yivi]

I'm sure it's me doing something wrong... but I'm a bit confused by this:

In my main plugin file I do:

function yosilose_init() {
    $instance = Yosilose::instance( __FILE__, '1.0.0' );

    if ( is_null( $instance->settings ) ) {
        $instance->settings = Yosilose_Settings::instance( $instance );
    }

    return $instance;
}

$y = yosilose_init();

$y_post = $y->register_post_type(
    'ys_reviews',
    __( 'Reviews', $y->_token ),
    __( 'Review', $y->_token )
);

$y_cats = $y->register_taxonomy(
    'ys_category',
    __('Categories', $y->_token),
    __('Category', $y->_token),
    array($y_post->post_type)
);

$y->admin->add_meta_box(
    $y_post->post_type . '_main_meta',
    __('Various', $y->_token),
    array($y_post->post_type),
    'side',
    'default'
);

But then I get an error about "add_meta_box" not being defined. The call gets to the Admin API and the admin API calls wordpress' version of add_meta_box... but seemingly can't find it in scope.

Which is weird, I can see in the call list that WP is completely loaded by that point:

( ! ) Fatal error: Call to undefined function add_meta_box() in /Users/yivi/Documents/Sites/yosilose-2.0/wp-content/plugins/yosilose/includes/lib/class-yosilose-admin-api.php on line 239
Call Stack
#   Time    Memory  Function    Location
1   0.0238  344440  {main}( )   ../edit.php:0
2   0.0822  403176  require_once( '/Users/yivi/Documents/Sites/yosilose-2.0/wp-admin/admin.php' )   ../edit.php:10
3   0.0825  418488  require_once( '/Users/yivi/Documents/Sites/yosilose-2.0/wp-load.php' )  ../admin.php:31
4   0.0826  428832  require_once( '/Users/yivi/Documents/Sites/yosilose-2.0/wp-config.php' )    ../wp-load.php:29
5   0.0835  509648  require_once( '/Users/yivi/Documents/Sites/yosilose-2.0/wp-settings.php' )  ../wp-config.php:62
6   0.3034  14122096    include_once( '/Users/yivi/Documents/Sites/yosilose-2.0/wp-content/plugins/yosilose/yosilose.php' ) ../wp-settings.php:215
7   0.3093  14424872    Yosilose_Admin_API->add_meta_box( ???, ???, ???, ???, ???, ??? )    ../yosilose.php:64

Shouldn't this work as it is? Again, I feel it's very likely to be user error... but can't understand why it thinks add_meta_box is undefined at that point. :(

Thanks and regards

[hlashbrooke]

The most likely issue is that you're running the $y->admin->add_meta_box(); function in the main plugin file here. That needs to be called on the add_meta_boxes hook otherwise it won't work correctly. If you call it in the main plugin file it will give the error that you're seeing there.

[yivi]

Once more, it was a classic case of "holding it wrong". Got it now, and also have a better understanding of how the templates+apis are meant to be used.

Many thanks for all your help. I hope I can contribute back a bit later on.

[hlashbrooke]

No worries - happy to help :)

At some point I'm going to create an example plugin that shows you how to use this template in a practical way, but I haven't had time to do that just yet.