function optimizely_init in Optimizely 7.3

Same name and namespace in other branches

1. 6 optimizely.module \optimizely_init()
2. 7 optimizely.module \optimizely_init()
3. 7.2 optimizely.module \optimizely_init()

Implements hook_init().

This function impliments the rules entered for each project entry. The goal is to control when an entry (Optimizely hosted javascript file) is applied to a page.

The "Paths" setting for each entry are interpited as literal paths or a whole range of paths noted with wildcards "*". A Project entry can appear on one or more paths that can include wildcards. The <front> token is supported in the possible path values.

For example, '<front>' will add the Optimizely snippet on the front page, and 'clubs/*' will place the snippet on all pages bellow 'clubs/'. Note: The javascript call / snippet will only appear on the actual 'clubs' page if you specify 'clubs' without the wildcard.

A disabled project entry will be ignored allowing entries to persist but be applied.

File

./optimizely.module, line 196

Optimizely module

Code

function optimizely_init() {

  // Exclude admin pages
  $current_path = current_path();
  if (!path_is_admin($current_path)) {
    $current_path_alias = drupal_lookup_path('alias', $current_path);
    $wildcard_match = FALSE;
    $add_snippet = FALSE;
    $every_page = FALSE;

    // Load all entries in the optimizely table
    $query = db_select('optimizely', 'o', array(
      'target' => 'slave',
    ))
      ->fields('o')
      ->condition('o.enabled', 1, '=')
      ->orderBy('oid');

    // Fetch the result set.
    $result = $query
      ->execute();

    // Query results found
    if ($result) {

      // Loop through each row of the found results
      while ($project = $result
        ->fetchAssoc()) {

        // Only process the entries that are enabled
        if ($project['enabled']) {
          $project_code = $project['project_code'];

          // Target paths from database for project and get real path for <front> if a part of target
          // paths for project
          $project_paths = unserialize($project['path']);
          $front_index = array_search('<front>', $project_paths);
          !is_int($front_index) ?: ($project_paths[$front_index] = variable_get('site_frontpage'));

          // Check all paths for alias or sytem URL values, foreach loop based on
          // orginal array value, addiitonal values added will not effect the array
          foreach ($project_paths as $project_path) {

            // Remove parameters
            if (strpos($project_path, '?') !== FALSE) {
              $project_path = substr($project_path, 0, strpos($project_path, '?'));

              // Look for wildcard match
              if (stristr($current_path, $project_path) || stristr(drupal_lookup_path('alias', $current_path), $project_path) || stristr(drupal_lookup_path('source', $current_path), $project_path)) {
                $add_snippet = TRUE;
                break;
              }
            }
            if (strpos($project_path, '*') !== FALSE) {

              // Site wide wild card
              if ($project_path == '*') {
                $add_snippet = TRUE;
                $every_page = TRUE;
                break;
              }
              else {

                // Remove wildcard, get base path(s)
                $project_path = substr($project_path, 0, -2);

                // Look for wildcard match
                if (stristr($current_path, $project_path) || stristr(drupal_lookup_path('alias', $current_path), $project_path) || stristr(drupal_lookup_path('source', $current_path), $project_path)) {
                  $add_snippet = TRUE;
                  break;
                }
              }
            }

            // Build out $project_paths with possible source and alias values to
            // test with drupal_match_path()
            $project_path_source = drupal_lookup_path('source', $project_path);
            !$project_path_source ?: ($project_paths[] = $project_path_source);
            $project_path_alias = drupal_lookup_path('alias', $project_path);
            !$project_path_alias ?: ($project_paths[] = $project_path_alias);
          }

          // Prep for drupal_match_path()
          $project_paths = implode("\n", array_unique($project_paths));
          if (drupal_match_path($current_path, $project_paths) || drupal_match_path($current_path_alias, $project_paths)) {
            $add_snippet = TRUE;
          }

          // Check for user role match, only check if path match has been found
          if ($add_snippet == TRUE) {
            $add_snippet = FALSE;

            // Unseralize project roles
            $project_roles = unserialize($project['roles']);
            global $user;
            foreach ($project_roles as $rid) {
              if (user_has_role($rid, $user)) {
                $add_snippet = TRUE;
                break;
              }
            }
          }
        }
      }
      if ($add_snippet) {
        $options = array(
          'type' => 'external',
          'every_page' => $every_page,
          'group' => JS_LIBRARY,
          'weight' => 0,
        );

        // Add javascript call to page markup
        drupal_add_js('//cdn.optimizely.com/js/' . $project_code . '.js', $options);
      }
    }
  }
}