apache mod_rewrite question

Post #354,723 by boxley 2/25/12 8:34:47 PM 2/25/12 10:39:59 PM Reply	apache mod_rewrite question is it possible to do substring rewrites on query strings? appears that url shortening is foobaring the examples, I will put a couple of white spaces in example http://foobar.com/ redirect?1=one&2=two&3=three I want to keep the string intact except change 1=one to 1=five if I do this RewriteCondition *.1=one ReWriteRule ^/redirect(.) http://foobar.com/redirect?1=five$1 [P,QSA.NC,L] gives me http://foobar.com/ redirect?1=five&1=one&2=two&3=three I can replace the entire string but at work but it is 30 fields in length and variable so there is no real way to do it My solution is to tell the developers that's what Java is for Any opinions expressed by me are mine alone, posted from my home computer, on my own time as a free American and do not reflect the opinions of any person or company that I have had professional relations with in the past 55 years. meep Edited by boxley Feb. 25, 2012, 10:38:33 PM EST Edited by boxley Feb. 25, 2012, 10:39:59 PM EST Expand All History
Post #354,726 by scoenye 2/25/12 11:43:52 PM Reply	Do you really need the QSA? From the mod_rewrite docs: qsappend\|QSA' (query string append) This flag forces the rewrite engine to append a query string part of the substitution string to the existing string, instead of replacing it. That looks like setting up for trouble in this case. (.) matches a single character (the question mark) and should result in http://foobar.com/ redirect?1=five?1=one&2=two Try `RewriteRule (.)1=one(.) http://foobar.com/$11=five$2 [P,NC,L]` Other than that, I'm not sure if the condition rule triggers: it should be "RewriteCond", and one of the parameters is missing.
Post #354,727 by boxley 2/26/12 1:14:14 AM Reply	tried that everything after the ? is ignored. will play around tomorrow apparently this is a highly visible issue Any opinions expressed by me are mine alone, posted from my home computer, on my own time as a free American and do not reflect the opinions of any person or company that I have had professional relations with in the past 55 years. meep
Post #354,765 by scoenye 2/27/12 4:52:40 PM Reply	It is possible... The key is to use the RewriteCond and then use the % backrefs: `RewriteCond %{QUERY_STRING} (.)1=one(.) RewriteRule index.html redirect.html?%11=five%2 [L]` (URL and host names don't match your example, but this is what I got working on my server. The rest shouldn't be to hard to reconstruct.)
Post #354,821 by boxley 2/28/12 4:35:41 PM Reply	thanx, turns out the rewrite doesnt help as the app mangles the query string in any case Any opinions expressed by me are mine alone, posted from my home computer, on my own time as a free American and do not reflect the opinions of any person or company that I have had professional relations with in the past 55 years. meep
Post #354,728 by static 2/26/12 3:57:53 AM Reply	I'd be moving it out of the rewrite. IMO, mod_rewrite is a solution for when it's clearly not the application's problem. I've seen unmaintainable messes of rewrite rules and have no wish to encourage that in the apps I support. :-( Trouble is, this decision is rarely cut-n-dried. I would be trying to push it into the application, even as you're trying for a mod_rewrite solution. All Java frameworks have hooks to hang classes to sort this out, if they can't or won't fix it in the controlllers or actions. Maybe encourage the devs to think of it as a competition. :-) Wade. Just Add Story http://justaddstory.wordpress.com/
Post #354,729 by boxley 2/26/12 8:16:48 AM Reply	ed zachery as it is my httpd.conf has 11k+ lines of rewrites Any opinions expressed by me are mine alone, posted from my home computer, on my own time as a free American and do not reflect the opinions of any person or company that I have had professional relations with in the past 55 years. meep
Post #354,730 by drook 2/26/12 9:22:35 AM Reply	Hey, Scott ... Bet you can't do a shapes example in mod_rewrite. -- Drew
Post #354,731 by boxley 2/26/12 11:16:42 AM Reply	its easy enuff if you rewrite the query string in it entirety. It appears that substring manipulations are out of bounds, although I havn't looked at the mod_rewrite source code yet. Any opinions expressed by me are mine alone, posted from my home computer, on my own time as a free American and do not reflect the opinions of any person or company that I have had professional relations with in the past 55 years. meep

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