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Remove printed url from link in Rails

deactivate behaviour

<style type="text/css">
    td a:link:after, td a:visited:after {       
      content: "" !important;    
      font-size: 0% !important;   
    }
</style>

activate behaviour

<style type="text/css">
    td a:link:after, td a:visited:after {    
      content: " ("attr(href) ") ";    
      font-size: 100%;   
    }
</style>
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