class views_handler_field_search_score

class views_handler_field_search_score extends views_handler_field_numeric {
    
    /**
     * {@inheritdoc}
     */
    public function option_definition() {
        $options = parent::option_definition();
        $options['alternate_sort'] = array(
            'default' => '',
        );
        $options['alternate_order'] = array(
            'default' => 'asc',
        );
        return $options;
    }
    
    /**
     * {@inheritdoc}
     */
    public function options_form(&$form, &$form_state) {
        $style_options = $this->view->display_handler
            ->get_option('style_options');
        if (isset($style_options['default']) && $style_options['default'] == $this->options['id']) {
            $handlers = $this->view->display_handler
                ->get_handlers('field');
            $options = array(
                '' => t('No alternate'),
            );
            foreach ($handlers as $id => $handler) {
                $options[$id] = $handler->ui_name();
            }
            $form['alternate_sort'] = array(
                '#type' => 'select',
                '#title' => t('Alternative sort'),
                '#description' => t('Pick an alternative default table sort field to use when the search score field is unavailable.'),
                '#options' => $options,
                '#default_value' => $this->options['alternate_sort'],
            );
            $form['alternate_order'] = array(
                '#type' => 'select',
                '#title' => t('Alternate sort order'),
                '#options' => array(
                    'asc' => t('Ascending'),
                    'desc' => t('Descending'),
                ),
                '#default_value' => $this->options['alternate_order'],
            );
        }
        parent::options_form($form, $form_state);
    }
    
    /**
     * {@inheritdoc}
     */
    public function query() {
        // Check to see if the search filter added 'score' to the table.
        // Our filter stores it as $handler->search_score -- and we also
        // need to check its relationship to make sure that we're using the same
        // one or obviously this won't work.
        foreach ($this->view->filter as $handler) {
            if (isset($handler->search_score) && $handler->relationship == $this->relationship) {
                $this->field_alias = $handler->search_score;
                $this->table_alias = $handler->table_alias;
                return;
            }
        }
        // Hide this field if no search filter is in place.
        $this->options['exclude'] = TRUE;
        if (!empty($this->options['alternate_sort'])) {
            if (isset($this->view->style_plugin->options['default']) && $this->view->style_plugin->options['default'] == $this->options['id']) {
                // Since the style handler initiates fields, we plug these values right
                // into the active handler.
                $this->view->style_plugin->options['default'] = $this->options['alternate_sort'];
                $this->view->style_plugin->options['order'] = $this->options['alternate_order'];
            }
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function render($values) {
        // Only render if we exist.
        if (isset($this->table_alias)) {
            return parent::render($values);
        }
    }

}