'GET', 'callback' => [ $this, 'container_width'], 'permission_callback' => function(){ return true; }, ]); } public function container_width() { $containerWidths = [ [ 'label' => __('Auto', 'badegg'), 'value' => 0 ], [ 'label' => __('Narrow', 'badegg'), 'value' => 'narrow' ], [ 'label' => __('Small', 'badegg'), 'value' => 'small' ], [ 'label' => __('Medium', 'badegg'), 'value' => 'medium' ], [ 'label' => __('Large', 'badegg'), 'value' => 'large' ], [ 'label' => __('Edge to edge', 'badegg'), 'value' => 'full' ], ]; return rest_ensure_response($containerWidths); } }