Confused about calling objects fields in Ruby -


Why do I get this error message? I am trying to make it so that the account name of each video is visible. Users and accounts are working perfectly on their own if I have not been included in it. Account_name, I just get an ugly collection code like: # I think I am confused about how to use an object's field within an object.

NoMethodError undefined method `account_name 'for video zero: NilClass 

  & lt;% @ Video. Video |% & gt; & Lt; TR & gt; & Lt; Td> & Lt;% = video.file% & gt; & Lt; / Td> ** & lt; Td> & Lt;% = video.user.account_name% & gt; & Lt; / Td> ** & lt; TD & gt; & Lt;% = video.name% & gt; & Lt; / Td> & Lt; / TR & gt; & Lt;% end% & gt;    
 
 
 apparently not with a  video   Users .  
 Change this:  
  & lt; Td> & Lt;% = video.user.account_name% & gt; & Lt; / Td>   
 To do this:  
  & lt; Td> & Lt;% = video.user.try (: account_name)%> & Lt; / Td>

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