from flask import abort
from flask_sqlalchemy import BaseQuery, Pagination


def paginate_faste(self, page=1, per_page=50, max_page=None, step=5, count_query=None):
    if page < 1:
        abort(404)

    if max_page and page > max_page:
        abort(404)

    # Count all items
    if count_query is not None:
        total_query_count = count_query.scalar()
    else:
        total_query_count = self.count()

    # Grab items on current page
    items = self.limit(per_page).offset((page - 1) * per_page).all()

    if not items and page != 1:
        abort(404)

    return Pagination(self, page, per_page, total_query_count, items)


BaseQuery.paginate_faste = paginate_faste