[pyrocms] Breadcrumbs 使用 Navigation `Header` 的架構為主來呈現。

Template.php

private function _build_breadcumbs()
{
	$old_breadcrumbs = $this->_breadcrumbs;
	$this->_breadcrumbs = array();
	$this->_override_breadcrumbs = array();

	$this->_ci->load->model('navigation/navigation_m');
	$this->_ci->load->model('settings/settings_m');
	$site_name = $this->_ci->settings_m->get('site_name');
	$navs = $this->_ci->navigation_m->get_link_tree('header');
	$parent = array();
	$curr = current_url();
	$break = false;
	foreach ($navs as $key => $nav) {
		foreach ($nav['children'] as $c_key => $c_nav) {
			foreach ($c_nav['children'] as $c_c_key => $c_c_nav) {
				if ($break OR preg_match('@' . $c_c_nav['url'] . '@', $curr))
				{
					$parent['c_c_parent'] = $c_c_key;
					$break = true;
					break;
				}
			}
			if ($break OR preg_match('@' . $c_nav['url'] . '@', $curr))
			{
				$parent['c_parent'] = $c_key;
				$break = true;
				break;
			}
		}
		if ($break OR preg_match('@' . $nav['url'] . '@', $curr))
		{
			$parent['parent'] = $key;
			$break = true;
			break;
		}
	}

	if (isset($parent['parent']))
	{
		if (isset($parent['c_parent']))
		{
			if (isset($parent['c_c_parent']))
			{
				$this->_breadcrumbs[] = array('name' => $site_name->value, 'uri' => site_url());
				$this->_breadcrumbs[] = array('name' => $navs[$parent['parent']]['title'], 'uri' => $navs[$parent['parent']]['url']);
				$this->_breadcrumbs[] = array('name' => $navs[$parent['parent']]['children'][$parent['c_parent']]['title'], 'uri' => $navs[$parent['parent']]['children'][$parent['c_parent']]['url']);
				$this->_breadcrumbs[] = array('name' => $navs[$parent['parent']]['children'][$parent['c_parent']]['children'][$parent['c_c_parent']]['title']);
			}
			else
			{
				$this->_breadcrumbs[] = array('name' => $site_name->value, 'uri' => site_url());
				$this->_breadcrumbs[] = array('name' => $navs[$parent['parent']]['title'], 'uri' => $navs[$parent['parent']]['url']);
				$this->_breadcrumbs[] = array('name' => $navs[$parent['parent']]['children'][$parent['c_parent']]['title']);
			}
		}
		else
		{
			$this->_breadcrumbs[] = array('name' => $site_name->value, 'uri' => site_url());
			$this->_breadcrumbs[] = array('name' => $navs[$parent['parent']]['title']);
		}
	}
	else
	{
		$this->_breadcrumbs[] = array('name' => $site_name->value);
	}

	if (count($old_breadcrumbs) > 0)
	{
		foreach ($old_breadcrumbs as $key => $old_breadcrumb) {
			if (preg_match('@' . $old_breadcrumb['uri'] . '@', $curr))
			{
				array_splice($old_breadcrumbs, $key, 1);
				if (count($old_breadcrumbs) > 0)
				{
					$this->_breadcrumbs[count($this->_breadcrumbs) - 1]['uri'] = site_url($old_breadcrumb['uri']);
				}
				break;
			}
		}
		$this->_breadcrumbs = array_merge($this->_breadcrumbs, $old_breadcrumbs);
	}

	return $this->_breadcrumbs;
}

public function build($view, $data = array(), $return = false, $IE_cache = true, $pre_parsed_view = false, $template = array())
{

  //...
  
	// Setup Breadcrumbs
	if ( ! $template)
	{
		$this->_build_breadcumbs();
	}
	else
	{
		$template['breadcrumbs'] = $this->_build_breadcumbs();
	}

  //...
}