ruby on rails - Erase Blank Json Loop -

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I have a rail backend that receives JSON (when it is parsed): 

  = "gtc: mediawiki-xid =" gtc: mediawiki-xid = "gtc: mediawiki-xid =" gtc: basically what I want to do, in every way (Such as magazine or book), if all the other attributes keys are empty except  like , then do not save that array key / value. So in my example, the magazine will be in the array, but will be removed as a book (because the value of both the attributes and the title is empty.  
 I know that I can loop through something ( The list has been parsed before JSON):  
  list.each do | l | if l ["type"] == "magazine" if l ["value"] empty? # Then terminate this notice  
 
 but this is not very repetitive and clear. How can I improve it? 
 
 
 
 This can be used to idle unwanted lines to do so. You only remove the values Can remove the blank, and count the remaining values ​​... make sure that 'type' is one of them ... 
 
  list.reject! {| Item> item.values.reject (& amp;: blank?) Size & lt; 2 & amp; amp; amp; item ['type'] .present?}  
 
 reject  and !  ... gives a new hash while th e !  The method modifies it in place.

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