ruby - redirection route to :back - rails -

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i have in routes file

match "/:url" => redirect_to :back, constraints: { url: /^keys.*/ }

but message error

routes.rb:132: syntax error, unexpected tsymbeg, expecting keyword_do or '{' or '(' (syntaxerror)   match "/:url" => redirect_to :back, constraints: { url: /^keys.*/ }                                 ^

where did go wrong ?

it's ambiguous, parentheses rescue!

match "/:url" => redirect_to(:back), constraints: { url: /^keys.*/ }

update

regarding there no redirect_to, try:

match "/:url" => redirect{|params, request| request.env["http_referer"]}, constraints: { url: /^keys.*/ }

i didn't tested code, let me know if wrong.


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