views.py 文件源码

def goto_url(request):
    """
    View that takes the user to a URL with the annotation layer enabled.

    Optional configuration for the client may be specified via additional query
    params:

    "q" - Initial query for the filter input in the client.
    """
    settings = request.registry.settings
    url = request.params.get('url')

    if url is None:
        raise httpexceptions.HTTPBadRequest('"url" parameter is missing')

    if not _is_valid_http_url(url):
        raise httpexceptions.HTTPBadRequest(
            _('Sorry, but this service can only show annotations on '
              'valid HTTP or HTTPs URLs.'))

    # Remove any existing #fragment identifier from the URI before we
    # append our own.
    url = parse.urldefrag(url)[0]

    query = parse.quote(request.params.get('q', ''))

    via_url = '{via_base_url}/{url}#annotations:query:{query}'.format(
        via_base_url=settings['via_base_url'],
        url=url,
        query=query)

    extension_url = '{url}#annotations:query:{query}'.format(
        url=url, query=query)

    pretty_url = util.get_pretty_url(url)

    return {
        'data': json.dumps({
            'chromeExtensionId': settings['chrome_extension_id'],
            'viaUrl': via_url,
            'extensionUrl': extension_url,
        }),
        'pretty_url': pretty_url
    }