function view::_build_arguments

Build all the arguments.

File

includes/view.inc, line 616

Class

view

An object to contain all of the data to generate a view, plus the member functions to build the view query, execute the query and render the output.

Code

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();
        $arg = isset($this->args[$position]) ? $this->args[$position] : NULL;
        $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;
                }
                // remember that this argument was computed, not passed on the URL.
                $argument->is_default = TRUE;
            }
            // Set the argument, which will also validate that the argument can be set.
            if (!$argument->set_argument($arg)) {
                $status = $argument->validate_fail($arg);
                break;
            }
            if ($argument->is_wildcard()) {
                $arg_title = $argument->wildcard_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(html_entity_decode($arg));
            // Since we're really generating the breadcrumb for the item above us,
            // check the default action of this argument.
            if ($this->display_handler
                ->uses_breadcrumb() && $argument->uses_breadcrumb()) {
                $path = $this->get_url($breadcrumb_args);
                if (strpos($path, '%') === FALSE) {
                    $breadcrumb = !empty($argument->options['breadcrumb']) ? $argument->options['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'])) {
                $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;
}