Ruby class instance fields hidden -


This is a very simple question, but I can not understand what is happening here. This is my simple model: 

  class user attr_accessor: first_name, last_name end   
 I can write  first_name  and  user  for the last_name  field, and when I call that user through the specified variable, I get this:  
  & gt; U = & gt; # & Lt; Users & gt;   
 This does not show the fields I wrote but when I do this (for the previous and first names):  
  & gt; U.first_name = & gt; "John"   
 When I call  u  the whole object is not showing? Like  = & gt; # & Lt; User first_name: 'john' lastname: 'smith' & gt; . What do I need to add to my model to get that output? thank you in advanced.  
  
 
 
 One object is  string   to_s  The method used for human-readable debugging output is  inspection . Some environments also use other methods, e.g.  pry  (or some plugins) uses  pretty_inspect  for "beautiful" human-readable debugging output. You need to implement those methods.  
 Example:  
  Inspect class user def "# & lt; # {self.class} first_name: '# {first_name}', last_name: '# {last_name} } '& gt; "End End

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