searxng/searx/user_help.py
Martin Fischer 05149db4c1 [help] render user documentation once on startup
Currently we have two kinds of user documentation:

* the about page[1] which is written in HTML and part of the web
  application and can therefore link instance-specific pages
  (like e.g. the preferences) via Jinja variables

* the Sphinx documentation[2] which is written in reStructuredText
  and cannot link instance-specific pages since it doesn't know
  which instance the user is using

The plan is to integrate the user documentation currently in Sphinx
into the application, so that it can also link instance specific pages.
We also want to enable the user documentation to be translated.

This commit implements the first step in this endeavor (see #722).

[1]: searx/templates/__common__/about.html
[2]: docs/user/ (currently served at https://docs.searxng.org/user/)
2022-01-23 08:01:55 +01:00

39 lines
1.3 KiB
Python

from typing import Dict
import os.path
import pkg_resources
import flask
from . import get_setting
from .version import GIT_URL
HELP: Dict[str, str] = {}
""" Maps a filename under help/ without the file extension to the rendered HTML. """
def render(app: flask.Flask):
"""
Renders the user documentation. Must be called after all Flask routes have been
registered, because the documentation might try to link to them with Flask's `url_for`.
We render the user documentation once on startup to improve performance.
"""
for filename in pkg_resources.resource_listdir(__name__, 'help'):
rootname, ext = os.path.splitext(filename)
if ext != '.html':
continue
text = pkg_resources.resource_string(__name__, 'help/' + filename).decode()
base_url = get_setting('server.base_url') or None
# we specify base_url so that url_for works for base_urls that have a non-root path
with app.test_request_context(base_url=base_url):
# the request context is needed for Flask's url_for
# (otherwise we'd need to set app.config['SERVER_NAME'],
# which we don't want)
interpolated = flask.render_template_string(text, get_setting=get_setting, searx_git_url=GIT_URL)
HELP[rootname] = interpolated