function hook_draw_chart_alter in Google Chart Tools 7

Implements hook_draw_chart_alter().

1 invocation of hook_draw_chart_alter()

draw_chart in ./google_chart_tools.module

Draw the chart

File

./google_chart_tools.api.php, line 10

Google Chart Tools API definitions.

Code

function hook_draw_chart_alter(&$settings) {
  foreach ($settings as $chart) {
    if (isset($chart['chart']['chartCategory']) && !empty($chart['chart']['chartCategory'])) {

      // Geting the count result by vocabulary machine name.
      $voc = taxonomy_vocabulary_machine_name_load('categories');
      $tree = taxonomy_get_tree($voc->vid);
      $header = array();
      foreach ($tree as $term) {

        // Feeds the header with terms names.
        $header[] = $term->name;
        $query = db_select('taxonomy_index', 'ti');
        $query
          ->condition('ti.tid', $term->tid, '=')
          ->fields('ti', array(
          'nid',
        ));

        // Feeding the terms with the node count.
        $terms[] = $query
          ->countQuery()
          ->execute()
          ->fetchField();
      }
      $columns = array(
        'Content per category',
      );
      $rows = array(
        $terms,
      );

      // Replacing the data of the chart.
      $chart['chart']['chartCategory']['header'] = $header;
      $chart['chart']['chartCategory']['rows'] = $rows;
      $chart['chart']['chartCategory']['columns'] = $columns;

      // Adding a colors attribute to the pie.
      $chart['chart']['chartCategory']['options']['colors'] = array(
        'red',
        '#004411',
      );
    }
  }
}