request - Ruby on rails get # params -

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I am trying to do something on backend if I get #test in query string but I think finding it I'm not.

How does anyone get these variables?

sample url 

  localhost: 3000 / # exam   
 thanks   
 
 
 This is called a.  
   
 
 
 
 
 
 
 
 
 
 
 
 
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