function view::_build_arguments

Build all the arguments.

File

includes/view.inc, line 831

Class

view

An object to contain all of the data to generate a view.

Code

public function _build_arguments() {
  // Initially, we want to build sorts and fields. This can change, though,
  // if we get a summary view.
  if (empty($this->argument)) {
    return TRUE;
  }
  // Build arguments.
  $position = -1;
  // Create a title for use in the breadcrumb trail.
  $title = $this->display_handler
    ->get_option('title');
  $this->build_info['breadcrumb'] = array();
  $breadcrumb_args = array();
  $substitutions = array();
  $status = TRUE;
  // Iterate through each argument and process.
  foreach ($this->argument as $id => $arg) {
    $position++;
    $argument =& $this->argument[$id];
    if ($argument->broken()) {
      continue;
    }
    $argument->set_relationship();
    $arg = NULL;
    if (isset($this->args[$position]) && $this->args[$position] !== '') {
      $arg = $this->args[$position];
    }
    $argument->position = $position;
    if (isset($arg) || $argument->has_default_argument()) {
      if (!isset($arg)) {
        $arg = $argument->get_default_argument();
        // Make sure default args get put back.
        if (isset($arg)) {
          $this->args[$position] = $arg;
        }
      }
      // Set the argument, which will also validate that the argument can be
      // set.
      if (!$argument->set_argument($arg)) {
        $status = $argument->validate_fail($arg);
        break;

      }
      if ($argument->is_exception()) {
        $arg_title = $argument->exception_title();
      }
      else {
        $arg_title = $argument->get_title();
        $argument->query($this->display_handler
          ->use_group_by());
      }
      // Add this argument's substitution.
      $substitutions['%' . ($position + 1)] = $arg_title;
      $substitutions['!' . ($position + 1)] = strip_tags(decode_entities($arg));
      // Since we're really generating the breadcrumb for the item above us,
      // check the default action of this argument.
      if ($this->display_handler
        ->uses_breadcrumb() && $argument->uses_breadcrumb()) {
        $path = $this->get_url($breadcrumb_args);
        if (strpos($path, '%') === FALSE) {
          if (!empty($argument->options['breadcrumb_enable']) && !empty($argument->options['breadcrumb'])) {
            $breadcrumb = $argument->options['breadcrumb'];
          }
          else {
            $breadcrumb = $title;
          }
          $this->build_info['breadcrumb'][$path] = str_replace(array_keys($substitutions), $substitutions, $breadcrumb);
        }
      }
      // Allow the argument to muck with this breadcrumb.
      $argument->set_breadcrumb($this->build_info['breadcrumb']);
      // Test to see if we should use this argument's title.
      if (!empty($argument->options['title_enable']) && !empty($argument->options['title'])) {
        $title = $argument->options['title'];
      }
      $breadcrumb_args[] = $arg;
    }
    else {
      // Determine default condition and handle.
      $status = $argument->default_action();
      break;

    }
    // Be safe with references and loops.
    unset($argument);
  }
  // Set the title in the build info.
  if (!empty($title)) {
    $this->build_info['title'] = $title;
  }
  // Store the arguments for later use.
  $this->build_info['substitutions'] = $substitutions;
  return $status;
}