Ruby on Rails

Hello everybody,

I'm trying to link some files from some servers like Sharepoint to my
application.

my problem is when the link is not good, I'm redirected in a 404 error
page (which is normal :p).

I would like to know how to something like a validation method to
display the button to download if the link is correct and to display a
red button if it's not.

I tried some different things like :

def remote_file_exist?(url)
res = Net::HTTP.get_response(URI.parse(url)) rescue SocketError
res
end

Without success. Each time some files were considered as unvalide
while they were valid and vice versa.

It maybe comes from my code, that's why i continue to try other
possibilities.

Any idea or suggestion ?

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