__init__.py 文件源码

def get_resource_uri_template(self):
    """
    URI template processor.
    See http://bitworking.org/projects/URI-Templates/
    """
    def _convert(template, params=[]):
        """URI template converter"""
        paths = template % dict([p, "{%s}" % p] for p in params)
        return '%s%s' % (get_script_prefix(), paths)
    try:
        resource_uri = self.handler.resource_uri()
        components = [None, [], {}]

        for i, value in enumerate(resource_uri):
            components[i] = value
        lookup_view, args, kwargs = components
        try:
            lookup_view = get_callable(lookup_view)
        except (ImportError, ViewDoesNotExist):
            # Emulate can_fail=True from earlier django versions.
            pass

        possibilities = get_resolver(None).reverse_dict.getlist(lookup_view)
        # The monkey patch is right here: we need to cope with 'possibilities'
        # being a list of tuples with 2 or 3 elements.
        for possibility_data in possibilities:
            possibility = possibility_data[0]
            for result, params in possibility:
                if args:
                    if len(args) != len(params):
                        continue
                    return _convert(result, params)
                else:
                    if set(kwargs.keys()) != set(params):
                        continue
                    return _convert(result, params)
    except:
        return None