hooks.py

from urllib.parse import parse_qs

import filtration


def validate(req, resp, **kwargs):
    ...

def access_log(req, resp, **kwargs):
    ...

def filter_queryset(req):
    if "id" not in req.params:
        req.context["filter"] = filtration.Expression.parseQsString()

def paginate_queryset(req):
    querystring = parse_qs(req.query_string)
    queryset = req.context["queryset"]

    if "per_page" in querystring:
        # Pagination
        req.context["pagination"] = {
            "page": int(querystring.get("page", 1)),
            "per_page": int(querystring.get("per_page", 25)),
        }

        if "sort_by" in querystring:
            req.context["pagination"].update({
                "sort_by": querystring["sort_by"],
                "order": int(querystring.get("order", -1)),
            })