Split the path in name and get parents

def parents(self, resources):
        """ Split the path in name and get parents """

        if self.docname == 'index':
            # The root has no parents
            return []
        parents = []
        parent = resources.get(self.parent)
        while parent is not None:
            parents.append(parent)
            parent = resources.get(parent.parent)
        return parents