windows - Rails 3 query string -


very weird error here. correctly request "/users/8788234"

in rails call:

redirect_to(:controller => 'login', :from_external_page => true, :on_login => request.env['request_uri']) , return

we see (as we'd expect) in rails log: redirected 

https://sampleapp.com/login?from_external_page=true&on_login=%2fusers%2f8788234

but next request see ip has values of query string scrambled:

started "/login?from_external_page=gehr&on_login=%2shfref%2s8788234" xx.xxx.xxx.xxx @ yyyy-mm-dd

this both makes query string values meaningless , causes following error: 

argumenterror: invalid %-encoding

(the %2f changed %2s invalid). every single value of each key-value pair within query string getting shifted 13 characters. every time we've seen this, user agent reads: "mozilla/5.0 (compatible; msie 9.0; windows nt 6.1; wow64; trident/5.0)", see user agent navigate application. has ever seen this? http://www.whatismybrowser.com/ tells me user agent ie9 running on windows 7, haven't been able reproduce bug.

this encoding issue. using rails 4 , following sample query string of current project. note first parameter in querystring "utf8=✓" missing in querystring.

profiles?utf8=✓&min_age=1&max_age=99&min_height=1&max_height=6&min_weight=1&max_weight=400

try adding "# encoding: utf-8 @ beginning of file"


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