resource.py 文件源码

def make_pagination_headers(limit, curpage, total, link_header=True):
    """Return Link Hypermedia Header."""
    lastpage = int(math.ceil(1.0 * total / limit) - 1)
    headers = {'X-Total-Count': str(total), 'X-Limit': str(limit),
               'X-Page-Last': str(lastpage), 'X-Page': str(curpage)}

    if not link_header:
        return headers

    base = "{}?%s".format(request.path)
    links = {}
    links['first'] = base % urlencode(dict(request.args, **{PAGE_ARG: 0}))
    links['last'] = base % urlencode(dict(request.args, **{PAGE_ARG: lastpage}))
    if curpage:
        links['prev'] = base % urlencode(dict(request.args, **{PAGE_ARG: curpage - 1}))
    if curpage < lastpage:
        links['next'] = base % urlencode(dict(request.args, **{PAGE_ARG: curpage + 1}))

    headers['Link'] = ",".join(['<%s>; rel="%s"' % (v, n) for n, v in links.items()])
    return headers


# pylama:ignore=R0201