Given a partial mimetype (such as 'json' or 'html'), return if the 
        view can render that type.

def can_render(self, partial_mimetype):
        """
        Given a partial mimetype (such as 'json' or 'html'), return if the 
        view can render that type.
        """
        for mime in self.render_map.keys():
            if mime == '*/*':
                return True
            if partial_mimetype in mime:
                return True
        return False