ruby on rails - How are instance variables used? -


Say in a controller for comments, I have 

  def to make @comment = Comment For example, in my questions: How can i get  @comment   
 
 
 
 
  
 Controller under the show, I have a  form_for  link for comment, can I use comment there? Or can I make it for comment on only one page?  
  
 
 
 It does not make any sense, ask "in what thoughts" there is only one view, which The given view is this  app / view / & lt; Admin name & gt;  is the default for matching the action name.  
 You can not access it in another view provided by another verb, to set  this  action provided by the   to set  @comment  for  must perform this action.

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