On 14 Dec 2013, at 2:23 PM, Massimo Di Pierro <massimo.dipie...@gmail.com> wrote: > Please open a ticket about this proposal.
I wonder if a more general solution might not be to have the router accept a regex for path_prefix, strip it from the incoming URL, and save it (say) as request.path_prefix. The outgoing URL rewriter would use request.path_prefix in preference to the value in the router. The point of doing it that way would be to avoid a dependency on the host webserver. The original use case, iirc, was to support installations in which the domain was shared between web2py and something else, so you could for example have URLs of the form http://domain.com/web2py/app/.... > > On Saturday, 14 December 2013 15:07:02 UTC-6, Rob Mayhue wrote: > Proposal - use the value of an environment variable as a path_prefix > > When using the parametric router there is an option called `path_prefix` > that's > described as "a path fragment that is prefixed to all outgoing URLs and > stripped > from all incoming URLs". I'm not sure what the original use case was for this > option > but the "path fragment" is a static value, a string that's added to BASE in > routes.py > like so: > > routers = dict( > ... > BASE=dict( > ... > path_prefix='PATH_FRAGMENT', # or even 'PATH/FRAGMENT' > ... > ), > ) > > > This allows things like 'http://domain-name.tld/PATH_FRAGMENT/a/c/f' > > In my use case I wanted the simplicity of the parametric router but I needed > to be > able to pass in the path fragment on the incoming URL so that it could change > and > still be "prefixed to all outgoing URLs and stripped from all incoming URLs", > or > possibly not even exist at all. > > I made some changes to gluon/rewrite.py to allow the value of an environment > variable > to be used as the path fragment if it exists. To use it I prefix the string > assigned > to `path_prefix` with a '$' like this: > > routers = dict( > ... > BASE=dict( > ... > path_prefix='$MY_ENV_VARIABLE', > ... > ), > ) > > > Leaving off the '$' causes `path_prefix` to work normally. > > Then in the server config I use a rewrite rule and get the path fragment via > a > regex and create the environment variable. The following is an apache rewrite > rule, > but this could be nginx etc as well. This rule gets anything starting with an > underscore (e.g. http://domain-name.tld/_MY_VALUE). > > RewriteRule ^/(_[^/]+) - [E=MY_ENV_VARIABLE:$1] > > > After that we have an environment variable with 'MY_ENV_VARIABLE' as its key > and > '_MY_VALUE' as its value. > > Basically the changes I made to gluon/rewrite.py allow the value of that > environment > variable to be used as the path fragment allowing you to change it by passing > in a new > path fragment on the URL and it acts just like the original `path_prefix` > option. > > In my use case I'm planning to use the "path fragment" for multi-tenancy. > Maybe there > is a better way to do this using the pattern based router and I just didn't > see it. > > I wanted to toss this onto the list and get some feedback, and if there is an > easier > way, be shown the light :) > > > -- > Resources: > - http://web2py.com > - http://web2py.com/book (Documentation) > - http://github.com/web2py/web2py (Source code) > - https://code.google.com/p/web2py/issues/list (Report Issues) -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
