Question

In Pyramid, add_notfound_view(append_slash=True) will cause a request which does not match any view, but which would match a view if a trailing slash existed on the end, to be redirected to the matching view.

Does an inverse to this exist? That is: If I have a route configured as

config.add_route('list_reports', '/reports')

and a user requests /reports/, is there a simple way to cause them to be redirected appropriately?

Answer 1

The non-global solution

Add a second route for each view that you want redirected.

config = Configurator()
def add_auto_route(name, pattern, **kw):
    config.add_route(name, pattern, **kw)
    if not pattern.endswith('/'):
        config.add_route(name + '-auto', pattern + '/')
        def redirector(request):
            return HTTPMovedPermanently(request.route_url(name))
        config.add_view(redirector, route_name=name + '-auto')

add_auto_route('list_reports', '/reports')

Globally redirect all routes (never support slash-appended routes)

Simply rewrite the URLs. This can be done via pyramid_rewrite, or externally by your web server.

config = Configurator()
config.include('pyramid_rewrite')
config.add_rewrite_rule(r'/(?P<path>.*)/', r'/%(path)s')

Attempt to redirect if a route is not found

Rip the AppendSlashNotFoundFactory out of pyramid’s source and invert it. Sorry, not doing that one for you here, but just as easy.