Kristopher Yates did speak thusly:
Hello,
Here is an example URL I'm trying to create a RewriteRule for:
index.php?section=help&page=test&mode=IN&item=4&action=edit
I have a rule that works when the request URL contains the
appropriate number of arguments but does not work when there are
fewer arguments than the Rule expects. I thought by creating
multiple (similar) rules would resolve but no luck. Here is what I
have that works as long as I pass all required arguments:
RewriteRule ^(.*)/(.*)/(.*)/(.*)/(.*)$
/index.php?section=$1&page=$2&mode=$3&item=$4&action=$5
The above rule correctly passes
http://domain.com/help/test/IN/4/edit to my script as
/index.php?section=help&page=test&mode=IN&item=4&action=edit .
I tried creating 5 rules so that, if Apache saw fewer arguments, it
would go down to the next rule but that didnt work like I thought it would:
RewriteRule ^(.*)/(.*)/(.*)/(.*)/(.*)$
/index.php?section=$1&page=$2&mode=$3&item=$4&action=$5
RewriteRule ^(.*)/(.*)/(.*)/(.*)$
/index.php?section=$1&page=$2&mode=$3&item=$4
RewriteRule ^(.*)/(.*)/(.*)$ /index.php?section=$1&page=$2&mode=$3
RewriteRule ^(.*)/(.*)$ /index.php?section=$1&page=$2
RewriteRule ^(.*)$ /index.php?section=$1
How do I write the rule(s) so that, if fewer arguments are passed,
it will still work?
Any help would be greatly appreciated.
---------------- End original message. ---------------------
OK, I will take a shot at this... though I am not very experienced
with mod_rewrite, I do know fair amount about regular expressions.
mod_rewrite documentation is here:
http://httpd.apache.org/docs/2.0/mod/mod_rewrite.html
First off, from the documentation of mod_rewrite, the rules are
applied in order as defined so they should fall through from one to
the next if a higher one does not apply. So it seems like your scheme
should work, why it doesn't is unknown to me. I am not sure about
this but you might want to try reversing the order of your tests, do
the smallest number of arguments first.
I think you probably ought to also use the last flag on each rule too
so it does not skip to the next if it matches. (Now that I think
about it, this may well be the problem here).
One thing you probably ought to account for is that you are making a
big assumption in your RE here. That assumption is that there will
never be a trailing slash on any of the URLs, this may not be a valid
assumption. To fix that you need to make a change to each RE prior to
the end of line anchor to indicate either 0 or 1 slashes may exist.
For example:
RewriteRule ^(.*)/?$ /index.php?section=$1
This rule would match both of these:
http://domain.com/help
http://domain.com/help/
So here is how I suggest you try the rules:
RewriteRule ^(.*)/?$ /index.php?section=$1 [L]
RewriteRule ^(.*)/(.*)/?$ /index.php?section=$1&page=$2 [L]
RewriteRule ^(.*)/(.*)/(.*)/?$ /index.php?section=$1&page=$2&mode=$3 [L]
RewriteRule ^(.*)/(.*)/(.*)/(.*)/?$
/index.php?section=$1&page=$2&mode=$3&item=$4 [L]
RewriteRule ^(.*)/(.*)/(.*)/(.*)/(.*)/?$
/index.php?section=$1&page=$2&mode=$3&item=$4&action=$5 [L]
Let me know if this helps. I am curious to see if I was on the right track.
Dragon
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