[Rails] link_to param body

Well you have at least two options to "hide" the parameters:

You could change your link_to call and include :method=>:post so it does
actually send a post request. This doesn't really hide the parameters since
the user can still view the source of the page and look at them.

You could send them as an encrypted parameter in the URL, then decrypt them
on the receiving page. This actually obfuscates the parameter so the user
can't see the actual parameters.