如何处理Python Bottle和Apache .htaccess中的URL重新路由？

Question

I am currently trying to create a simple standalone application using Python Bottle.

My entire project is under pytest/ , where I have dispatch.fcgi and .htaccess .

dispatch.fcgi :

#!/usr/bin/python
# -*- coding: utf-8 -*-
import bottle
import os
from bottle import route, run, view

@route('<foo:path>')
@view('index')
def pytest(foo = ''):
    return dict(foo=foo)

APP_ROOT = os.path.abspath(os.path.dirname(__file__))
bottle.TEMPLATE_PATH.append(os.path.join(APP_ROOT, 'templates'))
app = bottle.default_app()

if __name__ == '__main__':
    from flup.server.fcgi import WSGIServer
    WSGIServer(app).run()

.htaccess :

DirectoryIndex dispatch.fcgi

The following URLs give me the corresponding values of foo :

url.com/pytest/
> /pytest/

url.com/pytest/dispatch.fcgi
> /pytest/dispatch.fcgi

url.com/pytest/dispatch.fcgi/
> /

url.com/pytest/dispatch.fcgi/foo/bar
> /foo/bar

url.com/pytest/dispatch.fcgi/pytest/
> /pytest/

How can I make the URLs uniform? Should I deal with the rerouting with the .htaccess file or within the Python code? What would be considered most pythonic, or best practices?

I am running Python 2.6.6, Bottle 0.11.6, Flup 1.0.2, and Apache 2.2.24. I would also like to point out that I'm using shared hosting, and mod_wsgi is out of the question (if that makes a difference).

EDIT

This is what I expect to see:

url.com/pytest/
> <redirect to url.com/pytest/dispatch.fcgi>

url.com/pytest/dispatch.fcgi
> <empty string>

url.com/pytest/dispatch.fcgi/
> /

url.com/pytest/dispatch.fcgi/foo/bar
> /foo/bar

url.com/pytest/dispatch.fcgi/pytest/
> /pytest/

If there is a more efficient way of tackling this problem, please let me know.

Answer 1

Couple of thoughts. Hopefully some or all of these will help.

1) You can do the redirect from '/' to '/pytest/dispatch.fcgi' like this:

@route('/')
def home():
    bottle.redirect('/pytest/dispatch.fcgi')

2) Can you use ScriptAlias instead of DirectoryIndex? I see you're on a shared environment, so I'm not sure. My bottle/apache servers use ScriptAlias (or WSGIScriptAlias) and it works perfectly there; and it'd make more clear the way your code interacts with apache.

3) If worse came to worst, could you hackishly detect the case where foo == '/pytest/dispatch.fcgi' and act accordingly? (Eg, treat it as empty string.)

Hope this helps. Please keep us posted!

Answer 2

Bottle seems to be confused because it expects a trailing slash, followed by parameters. For that reason I changed my .htaccess file to read like this:

DirectoryIndex dispatch.fcgi/

Another option would be to have all errors fall back onto the dispatch script. That can be done with mod_rewrite :

<IfModule mod_rewrite.c>
Options -MultiViews

# rewrite for current folder
RewriteEngine On
RewriteBase /pytest

# redirect to front controller
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ dispatch.fcgi/ [R=301,QSA,L]
</IfModule>

or FallbackResource :

FallbackResource /pytest/dispatch.fcgi/